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1710 lines (1489 loc) · 53.3 KB
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>Advanced Color Picker</title>
<style>
:root {
--bg-color: #121212;
--panel-bg: #1e1e1e;
--panel-border: #333;
--accent-color: #4a9eff;
--text-primary: #eee;
--text-secondary: #aaa;
--max-width: 450px;
}
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
background-color: var(--bg-color);
color: var(--text-primary);
margin: 0;
padding: 20px;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
min-height: 100vh;
box-sizing: border-box;
overflow-x: hidden;
}
.picker-layout {
width: 100%;
max-width: var(--max-width);
display: flex;
flex-direction: column;
gap: 20px;
}
.section-title {
font-size: 0.9rem;
margin-bottom: 8px;
color: var(--text-secondary);
font-weight: 500;
}
/* --- Top Section: Wheel + Alpha --- */
.top-section {
display: grid;
grid-template-columns: 1fr 40px;
gap: 15px;
align-items: stretch;
}
.canvas-wrapper {
position: relative;
background: var(--panel-bg);
border-radius: 12px;
overflow: hidden;
box-shadow: 0 4px 12px rgba(0,0,0,0.2);
border: 1px solid var(--panel-border);
}
canvas {
display: block;
width: 100%;
height: 100%;
cursor: pointer;
touch-action: none;
}
/* --- RGB Sliders --- */
.sliders-section {
display: flex;
flex-direction: column;
gap: 10px;
}
.rgb-wrapper {
height: 120px;
}
/* --- Result --- */
.result-row {
display: flex;
align-items: center;
gap: 15px;
padding: 10px 20px;
background: var(--panel-bg);
border-radius: 50px;
box-shadow: 0 2px 10px rgba(0,0,0,0.2);
justify-content: space-between;
border: 1px solid var(--panel-border);
}
.preview-circle {
width: 40px;
height: 40px;
border-radius: 50%;
border: 2px solid #fff;
box-shadow: 0 2px 5px rgba(0,0,0,0.3);
background-image:
linear-gradient(45deg, #555 25%, transparent 25%),
linear-gradient(-45deg, #555 25%, transparent 25%),
linear-gradient(45deg, transparent 75%, #555 75%),
linear-gradient(-45deg, transparent 75%, #555 75%);
background-size: 10px 10px;
background-position: 0 0, 0 5px, 5px -5px, -5px 0px;
overflow: hidden;
flex-shrink: 0;
}
#previewInner {
width: 100%;
height: 100%;
border-radius: 50%;
}
#colorText {
font-family: monospace;
font-size: 1.1rem;
color: var(--text-primary);
letter-spacing: 1px;
margin-right: 10px;
}
/* --- Additional Controls --- */
.controls-section {
display: flex;
gap: 10px;
justify-content: space-between;
}
.format-selector {
display: flex;
background: var(--panel-bg);
border-radius: 8px;
padding: 4px;
border: 1px solid var(--panel-border);
}
.format-btn {
padding: 6px 12px;
border: none;
background: transparent;
color: var(--text-secondary);
border-radius: 6px;
cursor: pointer;
font-size: 0.85rem;
transition: all 0.2s;
}
.format-btn.active {
background: var(--accent-color);
color: white;
}
.action-buttons {
display: flex;
gap: 8px;
}
.action-btn {
padding: 6px 12px;
border: 1px solid var(--panel-border);
background: var(--panel-bg);
color: var(--text-primary);
border-radius: 6px;
cursor: pointer;
font-size: 0.85rem;
transition: all 0.2s;
}
.action-btn:hover {
background: #2a2a2a;
}
/* --- Value Display --- */
.value-display {
display: flex;
gap: 25px;
flex-wrap: wrap;
}
.value-item {
display: flex;
flex-direction: column;
align-items: center;
flex: 1;
min-width: 60px;
}
.value-label {
font-size: 0.75rem;
color: var(--text-secondary);
margin-bottom: 4px;
}
.value-number {
font-family: monospace;
font-size: 0.9rem;
background: var(--panel-bg);
padding: 6px 10px;
border-radius: 6px;
width: 100%;
text-align: center;
border: 1px solid var(--panel-border);
}
/* --- Presets --- */
.presets-section {
display: flex;
flex-direction: column;
gap: 10px;
}
.presets-grid {
display: grid;
grid-template-columns: repeat(8, 1fr);
gap: 8px;
}
.preset-color {
aspect-ratio: 1;
border-radius: 6px;
cursor: pointer;
border: 2px solid transparent;
transition: transform 0.2s, border-color 0.2s;
}
.preset-color:hover {
transform: scale(1.1);
}
.preset-color.active {
border-color: white;
transform: scale(1.1);
}
.footer-text {
text-align: center;
font-size: 8px;
font-family: monospace;
opacity: 0.7;
}
</style>
</head>
<body>
<div class="picker-layout">
<div class="top-section">
<div class="canvas-wrapper" id="hueContainer">
<canvas id="hueSVCanvas"></canvas>
</div>
<div class="canvas-wrapper" id="alphaContainer">
<canvas id="alphaCanvas"></canvas>
</div>
</div>
<div class="sliders-section">
<div class="section-title">RGB Sliders</div>
<div class="canvas-wrapper rgb-wrapper" id="rgbContainer">
<canvas id="rgbCanvas"></canvas>
</div>
</div>
<div class="value-display">
<div class="value-item">
<div class="value-label">R</div>
<div class="value-number" id="rValue">255</div>
</div>
<div class="value-item">
<div class="value-label">G</div>
<div class="value-number" id="gValue">0</div>
</div>
<div class="value-item">
<div class="value-label">B</div>
<div class="value-number" id="bValue">0</div>
</div>
<div class="value-item">
<div class="value-label">A</div>
<div class="value-number" id="aValue">1.00</div>
</div>
</div>
<div class="presets-section">
<div class="section-title">Color Presets</div>
<div class="presets-grid" id="presetsGrid">
<!-- Presets will be generated by JavaScript -->
</div>
</div>
<div class="result-row">
<div class="preview-circle">
<div id="previewInner"></div>
</div>
<div id="colorText">rgba(255, 0, 0, 1.00)</div>
</div>
<div class="controls-section">
<div class="format-selector">
<button class="format-btn active" data-format="rgba">RGBA</button>
<button class="format-btn" data-format="hex">HEX</button>
<button class="format-btn" data-format="hsla">HSLA</button>
</div>
<div class="action-buttons">
<button class="action-btn" id="copyBtn">Copy</button>
<button class="action-btn" id="randomBtn">Random</button>
</div>
</div>
</div>
<script>
// --- Global Config ---
const CURSOR_RADIUS = 10;
const CURSOR_WIDTH = 1;
// --- State ---
const state = {
h: 0, s: 1, v: 1,
r: 255, g: 0, b: 0,
a: 255,
format: 'rgba'
};
// Color presets
const colorPresets = [
'#FF0000', '#00FF00', '#0000FF', '#FFFF00', '#FF00FF', '#00FFFF',
'#FF4500', '#FF1493', '#9400D3', '#000000', '#FFFFFF', '#808080',
'#FFA500', '#FFD700', '#ADFF2F', '#32CD32', '#00FA9A', '#40E0D0',
'#1E90FF', '#000080', '#8A2BE2', '#FF69B4', '#F5F5DC', '#A52A2A'
];
// --- Helpers ---
function hsvToRgb(h, s, v) {
let r, g, b, i = Math.floor(h * 6), f = h * 6 - i, p = v * (1 - s), q = v * (1 - f * s), t = v * (1 - (1 - f) * s);
switch (i % 6) {
case 0: r = v, g = t, b = p; break;
case 1: r = q, g = v, b = p; break;
case 2: r = p, g = v, b = t; break;
case 3: r = p, g = q, b = v; break;
case 4: r = t, g = p, b = v; break;
case 5: r = v, g = p, b = q; break;
}
return { r: Math.round(r * 255), g: Math.round(g * 255), b: Math.round(b * 255) };
}
function rgbToHsv(r, g, b) {
r /= 255, g /= 255, b /= 255;
let max = Math.max(r, g, b), min = Math.min(r, g, b), h, s, v = max, d = max - min;
s = max == 0 ? 0 : d / max;
if (max == min) h = 0;
else {
switch (max) {
case r: h = (g - b) / d + (g < b ? 6 : 0); break;
case g: h = (b - r) / d + 2; break;
case b: h = (r - g) / d + 4; break;
}
h /= 6;
}
return { h: h * 360, s: s, v: v };
}
function rgbToHex(r, g, b) {
return "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1).toUpperCase();
}
function hexToRgb(hex) {
const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
return result ? {
r: parseInt(result[1], 16),
g: parseInt(result[2], 16),
b: parseInt(result[3], 16)
} : null;
}
function rgbToHsl(r, g, b) {
r /= 255, g /= 255, b /= 255;
const max = Math.max(r, g, b), min = Math.min(r, g, b);
let h, s, l = (max + min) / 2;
if (max === min) {
h = s = 0; // achromatic
} else {
const d = max - min;
s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
switch (max) {
case r: h = (g - b) / d + (g < b ? 6 : 0); break;
case g: h = (b - r) / d + 2; break;
case b: h = (r - g) / d + 4; break;
}
h /= 6;
}
return { h: Math.round(h * 360), s: Math.round(s * 100), l: Math.round(l * 100) };
}
/**
* Base Class for Canvas
*/
class ResponsiveCanvas {
constructor(canvasId, maintainAspectRatio = null) {
this.canvas = document.getElementById(canvasId);
this.ctx = this.canvas.getContext('2d');
this.maintainAspectRatio = maintainAspectRatio;
this.observer = new ResizeObserver(() => this.resize());
this.observer.observe(this.canvas.parentElement);
this.dpr = 1;
this.w = 0;
this.h = 0;
}
resize() {
const parent = this.canvas.parentElement;
const rect = parent.getBoundingClientRect();
this.w = rect.width;
if (this.maintainAspectRatio) {
this.h = this.w / this.maintainAspectRatio;
this.canvas.style.height = `${this.h}px`;
} else {
this.h = rect.height;
this.canvas.style.height = '100%';
}
this.dpr = window.devicePixelRatio || 1;
this.canvas.width = this.w * this.dpr;
this.canvas.height = this.h * this.dpr;
this.ctx.scale(this.dpr, this.dpr);
this.draw();
}
getPointerPos(e) {
const rect = this.canvas.getBoundingClientRect();
const clientX = e.touches ? e.touches[0].clientX : e.clientX;
const clientY = e.touches ? e.touches[0].clientY : e.clientY;
return {
x: clientX - rect.left,
y: clientY - rect.top
};
}
drawCommonCursor(x, y, fillStyle) {
this.ctx.beginPath();
this.ctx.arc(x, y, CURSOR_RADIUS, 0, Math.PI*2);
this.ctx.strokeStyle = "white";
this.ctx.lineWidth = CURSOR_WIDTH;
this.ctx.stroke();
this.ctx.beginPath();
this.ctx.arc(x, y, CURSOR_RADIUS - 1, 0, Math.PI*2);
this.ctx.fillStyle = fillStyle;
this.ctx.fill();
}
}
/**
* HUE + SV PICKER (Aspect Ratio 1:1)
*/
class HueSVPicker extends ResponsiveCanvas {
constructor(canvasId) {
super(canvasId, 1);
this.isDraggingHue = false;
this.isDraggingSV = false;
this.setupEvents();
}
draw() {
if(!this.w) return;
const ctx = this.ctx;
ctx.clearRect(0, 0, this.w, this.h);
const wheelThick = this.w * 0.08;
const padding = 5;
const cx = this.w / 2;
const cy = this.h / 2;
const outerR = (this.w / 2) - padding;
const innerR = outerR - wheelThick;
// Hue Wheel
const hueGrad = ctx.createConicGradient(-Math.PI / 2, cx, cy);
for(let i=0; i<=360; i+=10) hueGrad.addColorStop(i/360, `hsl(${i}, 100%, 50%)`);
ctx.beginPath();
ctx.arc(cx, cy, outerR, 0, Math.PI * 2);
ctx.arc(cx, cy, innerR, 0, Math.PI * 2, true);
ctx.fillStyle = hueGrad;
ctx.fill();
// SV Square
const sqSize = (innerR * Math.sqrt(2)) - (padding * 3);
this.sqRect = {
x: cx - sqSize/2, y: cy - sqSize/2, w: sqSize, h: sqSize
};
// Saturation
const satGrad = ctx.createLinearGradient(this.sqRect.x, 0, this.sqRect.x + this.sqRect.w, 0);
satGrad.addColorStop(0, "white");
satGrad.addColorStop(1, `hsl(${state.h}, 100%, 50%)`);
ctx.fillStyle = satGrad;
ctx.fillRect(this.sqRect.x, this.sqRect.y, this.sqRect.w, this.sqRect.h);
// Value
ctx.save();
ctx.globalCompositeOperation = 'multiply';
const valGrad = ctx.createLinearGradient(0, this.sqRect.y, 0, this.sqRect.y + this.sqRect.h);
valGrad.addColorStop(0, "white");
valGrad.addColorStop(1, "black");
ctx.fillStyle = valGrad;
ctx.fillRect(this.sqRect.x, this.sqRect.y, this.sqRect.w, this.sqRect.h);
ctx.restore();
// Cursors
// Hue
const hRad = (state.h - 90) * (Math.PI / 180);
const selDist = outerR - (wheelThick / 2);
this.drawCommonCursor(
cx + selDist * Math.cos(hRad),
cy + selDist * Math.sin(hRad),
`hsl(${state.h}, 100%, 50%)`
);
// SV
const svX = this.sqRect.x + (state.s * this.sqRect.w);
const svY = this.sqRect.y + ((1 - state.v) * this.sqRect.h);
const rgb = hsvToRgb(state.h/360, state.s, state.v);
this.drawCommonCursor(svX, svY, `rgb(${rgb.r}, ${rgb.g}, ${rgb.b})`);
this.geom = { innerR, outerR, cx, cy };
}
setupEvents() {
const handle = (e) => {
const {x, y} = this.getPointerPos(e);
const dx = x - this.geom.cx, dy = y - this.geom.cy;
const dist = Math.sqrt(dx*dx + dy*dy);
if (e.type === 'mousedown' || e.type === 'touchstart') {
if (dist >= this.geom.innerR && dist <= this.geom.outerR) this.isDraggingHue = true;
else if (x >= this.sqRect.x && x <= this.sqRect.x + this.sqRect.w &&
y >= this.sqRect.y && y <= this.sqRect.y + this.sqRect.h) this.isDraggingSV = true;
}
if (this.isDraggingHue) {
state.h = (Math.atan2(dy, dx) * (180 / Math.PI) + 450) % 360;
updateFromHueSV();
} else if (this.isDraggingSV) {
state.s = Math.max(0, Math.min(1, (x - this.sqRect.x) / this.sqRect.w));
state.v = Math.max(0, Math.min(1, 1 - ((y - this.sqRect.y) / this.sqRect.h)));
updateFromHueSV();
}
};
const stop = () => { this.isDraggingHue = false; this.isDraggingSV = false; };
this.canvas.addEventListener('mousedown', handle);
this.canvas.addEventListener('mousemove', (e) => { if(this.isDraggingHue || this.isDraggingSV) handle(e); });
window.addEventListener('mouseup', stop);
this.canvas.addEventListener('touchstart', (e) => { handle(e); e.preventDefault(); }, {passive: false});
this.canvas.addEventListener('touchmove', (e) => { if(this.isDraggingHue || this.isDraggingSV) handle(e); e.preventDefault(); }, {passive: false});
window.addEventListener('touchend', stop);
}
}
/**
* VERTICAL ALPHA SLIDER
*/
class AlphaSlider extends ResponsiveCanvas {
constructor(canvasId) {
super(canvasId);
this.isDragging = false;
this.setupEvents();
}
draw() {
if(!this.w) return;
const ctx = this.ctx;
ctx.clearRect(0,0, this.w, this.h);
const pad = 8;
const barX = pad;
const barY = pad;
const barW = this.w - (pad * 2);
const barH = this.h - (pad * 2);
// Checkerboard
ctx.fillStyle = '#333';
ctx.fillRect(barX, barY, barW, barH);
ctx.fillStyle = '#666';
const chk = 6;
for(let i=0; i<barW/chk; i++) {
for(let j=0; j<barH/chk; j++) {
if((i+j)%2 !== 0) ctx.fillRect(barX + i*chk, barY + j*chk, chk, chk);
}
}
// Gradient
const grad = ctx.createLinearGradient(0, barY, 0, barY + barH);
grad.addColorStop(0, `rgba(${state.r},${state.g},${state.b}, 1)`);
grad.addColorStop(1, `rgba(${state.r},${state.g},${state.b}, 0)`);
ctx.fillStyle = grad;
ctx.fillRect(barX, barY, barW, barH);
// Cursor
const curY = barY + ((255 - state.a) / 255) * barH;
const curX = this.w / 2;
this.drawCommonCursor(curX, curY, `rgba(${state.r},${state.g},${state.b}, ${state.a/255})`);
this.geom = { barY, barH };
}
setupEvents() {
const handle = (e) => {
const {y} = this.getPointerPos(e);
if (this.isDragging || e.type === 'mousedown' || e.type === 'touchstart') {
let norm = (y - this.geom.barY) / this.geom.barH;
let val = 1 - Math.max(0, Math.min(1, norm));
state.a = Math.round(val * 255);
refreshAll();
}
};
this.canvas.addEventListener('mousedown', () => this.isDragging = true);
this.canvas.addEventListener('mousemove', (e) => { if(this.isDragging) handle(e); });
window.addEventListener('mouseup', () => this.isDragging = false);
this.canvas.addEventListener('touchstart', (e) => { this.isDragging = true; handle(e); e.preventDefault(); }, {passive:false});
this.canvas.addEventListener('touchmove', (e) => { if(this.isDragging) handle(e); e.preventDefault(); }, {passive:false});
window.addEventListener('touchend', () => this.isDragging = false);
}
}
/**
* RGB SLIDERS
*/
class RGBSliders extends ResponsiveCanvas {
constructor(canvasId) {
super(canvasId);
this.activeSlider = null;
this.setupEvents();
}
draw() {
if(!this.w) return;
const ctx = this.ctx;
ctx.clearRect(0, 0, this.w, this.h);
const padX = 15;
const trackH = 20;
const availH = this.h;
const gap = (availH - (trackH * 3)) / 4;
const trackW = this.w - (padX * 2);
this.sliderGeom = [
{ type: 'r', y: gap },
{ type: 'g', y: gap*2 + trackH },
{ type: 'b', y: gap*3 + trackH*2 }
];
this.sliderGeom.forEach(s => {
// Track background
const grad = ctx.createLinearGradient(padX, 0, padX + trackW, 0);
if(s.type === 'r') {
grad.addColorStop(0, `rgb(0, ${state.g}, ${state.b})`);
grad.addColorStop(1, `rgb(255, ${state.g}, ${state.b})`);
} else if(s.type === 'g') {
grad.addColorStop(0, `rgb(${state.r}, 0, ${state.b})`);
grad.addColorStop(1, `rgb(${state.r}, 255, ${state.b})`);
} else {
grad.addColorStop(0, `rgb(${state.r}, ${state.g}, 0)`);
grad.addColorStop(1, `rgb(${state.r}, ${state.g}, 255)`);
}
// Round caps for track
ctx.lineCap = "round";
ctx.lineWidth = trackH;
ctx.strokeStyle = grad;
ctx.beginPath();
ctx.moveTo(padX, s.y + trackH/2);
ctx.lineTo(padX + trackW, s.y + trackH/2);
ctx.stroke();
// Cursor
let val = state[s.type];
let cx = padX + (val / 255) * trackW;
let cy = s.y + trackH/2;
this.drawCommonCursor(cx, cy, `rgb(${state.r}, ${state.g}, ${state.b})`);
// Interaction zone
s.hitY = s.y;
s.hitH = trackH + gap;
});
this.common = { padX, trackW };
}
setupEvents() {
const handle = (e) => {
const {x, y} = this.getPointerPos(e);
if (e.type === 'mousedown' || e.type === 'touchstart') {
this.activeSlider = null;
this.sliderGeom.forEach(s => {
if (y >= s.hitY - 10 && y <= s.hitY + s.hitH + 10) this.activeSlider = s.type;
});
}
if (this.activeSlider) {
let norm = (x - this.common.padX) / this.common.trackW;
state[this.activeSlider] = Math.round(Math.max(0, Math.min(1, norm)) * 255);
updateFromRGB();
}
};
const stop = () => { this.activeSlider = null; };
this.canvas.addEventListener('mousedown', handle);
this.canvas.addEventListener('mousemove', (e) => { if(this.activeSlider) handle(e); });
window.addEventListener('mouseup', stop);
this.canvas.addEventListener('touchstart', (e) => { handle(e); e.preventDefault(); }, {passive:false});
this.canvas.addEventListener('touchmove', (e) => { if(this.activeSlider) handle(e); e.preventDefault(); }, {passive:false});
window.addEventListener('touchend', stop);
}
}
// --- Init & Refresh ---
const huePicker = new HueSVPicker('hueSVCanvas');
const rgbSliders = new RGBSliders('rgbCanvas');
const alphaSlider = new AlphaSlider('alphaCanvas');
function updateFromHueSV() {
const rgb = hsvToRgb(state.h/360, state.s, state.v);
state.r = rgb.r; state.g = rgb.g; state.b = rgb.b;
refreshAll();
}
function updateFromRGB() {
const hsv = rgbToHsv(state.r, state.g, state.b);
state.h = hsv.h; state.s = hsv.s; state.v = hsv.v;
refreshAll();
}
function refreshAll() {
huePicker.draw();
rgbSliders.draw();
alphaSlider.draw();
// Update preview
const a = (state.a / 255).toFixed(2);
const css = `rgba(${state.r}, ${state.g}, ${state.b}, ${a})`;
document.getElementById('previewInner').style.backgroundColor = css;
// Update value displays
document.getElementById('rValue').textContent = state.r;
document.getElementById('gValue').textContent = state.g;
document.getElementById('bValue').textContent = state.b;
document.getElementById('aValue').textContent = a;
// Update color text based on format
updateColorText();
}
function updateColorText() {
const a = (state.a / 255).toFixed(2);
let text;
switch(state.format) {
case 'rgba':
text = `rgba(${state.r}, ${state.g}, ${state.b}, ${a})`;
break;
case 'hex':
text = rgbToHex(state.r, state.g, state.b);
break;
case 'hsla':
const hsl = rgbToHsl(state.r, state.g, state.b);
text = `hsla(${hsl.h}, ${hsl.s}%, ${hsl.l}%, ${a})`;
break;
}
document.getElementById('colorText').innerText = text;
}
function setupPresets() {
const presetsGrid = document.getElementById('presetsGrid');
colorPresets.forEach(color => {
const preset = document.createElement('div');
preset.className = 'preset-color';
preset.style.backgroundColor = color;
preset.addEventListener('click', () => {
const rgb = hexToRgb(color);
if (rgb) {
state.r = rgb.r;
state.g = rgb.g;
state.b = rgb.b;
updateFromRGB();
}
});
presetsGrid.appendChild(preset);
});
}
function setupFormatButtons() {
const formatBtns = document.querySelectorAll('.format-btn');
formatBtns.forEach(btn => {
btn.addEventListener('click', () => {
formatBtns.forEach(b => b.classList.remove('active'));
btn.classList.add('active');
state.format = btn.dataset.format;
updateColorText();
});
});
}
function setupActionButtons() {
// Copy button
document.getElementById('copyBtn').addEventListener('click', () => {
const text = document.getElementById('colorText').innerText;
navigator.clipboard.writeText(text).then(() => {
const originalText = document.getElementById('copyBtn').textContent;
document.getElementById('copyBtn').textContent = 'Copied!';
setTimeout(() => {
document.getElementById('copyBtn').textContent = originalText;
}, 1500);
});
});
// Random button
document.getElementById('randomBtn').addEventListener('click', () => {
state.r = Math.floor(Math.random() * 256);
state.g = Math.floor(Math.random() * 256);
state.b = Math.floor(Math.random() * 256);
updateFromRGB();
});
}
// Initialize everything
setupPresets();
setupFormatButtons();
setupActionButtons();
refreshAll();
</script>
<br>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<title>Advanced Color Picker</title>
<style>
:root {
--bg-color: #121212;
--panel-bg: #1e1e1e;
--panel-border: #333;
--accent-color: #4a9eff;
--text-primary: #eee;
--text-secondary: #aaa;
--max-width: 450px;
}
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
background-color: var(--bg-color);
color: var(--text-primary);
margin: 0;
padding: 20px;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
min-height: 100vh;
box-sizing: border-box;
overflow-x: hidden;
}
.picker-layout {
width: 100%;
max-width: var(--max-width);
display: flex;
flex-direction: column;
gap: 20px;
}
.section-title {
font-size: 0.9rem;
margin-bottom: 8px;
color: var(--text-secondary);
font-weight: 500;
}
/* --- Top Section: Wheel + Alpha --- */
.top-section {
display: grid;
grid-template-columns: 1fr 40px;
gap: 15px;
align-items: stretch;
}
.canvas-wrapper {
position: relative;
background: var(--panel-bg);
border-radius: 12px;
overflow: hidden;
box-shadow: 0 4px 12px rgba(0,0,0,0.2);
border: 1px solid var(--panel-border);
}
canvas {
display: block;
width: 100%;
height: 100%;
cursor: pointer;
touch-action: none;
}
/* --- RGB Sliders --- */
.sliders-section {
display: flex;
flex-direction: column;
gap: 10px;
}
.rgb-wrapper {
height: 120px;
}
/* --- Result --- */
.result-row {
display: flex;
align-items: center;
gap: 15px;
padding: 10px 20px;
background: var(--panel-bg);
border-radius: 50px;
box-shadow: 0 2px 10px rgba(0,0,0,0.2);
justify-content: space-between;
border: 1px solid var(--panel-border);
}
.preview-circle {
width: 40px;
height: 40px;
border-radius: 50%;
border: 2px solid #fff;
box-shadow: 0 2px 5px rgba(0,0,0,0.3);
background-image:
linear-gradient(45deg, #555 25%, transparent 25%),
linear-gradient(-45deg, #555 25%, transparent 25%),
linear-gradient(45deg, transparent 75%, #555 75%),
linear-gradient(-45deg, transparent 75%, #555 75%);
background-size: 10px 10px;
background-position: 0 0, 0 5px, 5px -5px, -5px 0px;
overflow: hidden;
flex-shrink: 0;
}
#previewInner {
width: 100%;
height: 100%;
border-radius: 50%;
}
#colorText {
font-family: monospace;
font-size: 1.1rem;
color: var(--text-primary);
letter-spacing: 1px;
margin-right: 10px;
}
/* --- Additional Controls --- */
.controls-section {
display: flex;
gap: 10px;
justify-content: space-between;
}
.format-selector {
display: flex;
background: var(--panel-bg);
border-radius: 8px;
padding: 4px;
border: 1px solid var(--panel-border);
}
.format-btn {
padding: 6px 12px;
border: none;
background: transparent;
color: var(--text-secondary);
border-radius: 6px;
cursor: pointer;
font-size: 0.85rem;
transition: all 0.2s;
}
.format-btn.active {