Hotodogo | Snippets: HEX/RGB Color Converter

:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg: #f1f5f9;
    --card: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 4px 24px rgba(0,0,0,0.08);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 24px 16px;
}

CSS Before Head

<meta name="viewport" content="width=device-width, initial-scale=1.0">

HTML Head

.container {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 32px;
    width: 100%;
    max-width: 480px;
}
h1 {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 24px;
    color: var(--primary);
}
.converter-section {
    margin-bottom: 24px;
    padding: 20px;
    background: #f8fafc;
    border: 1.5px solid var(--border);
    border-radius: 8px;
}
.converter-section h2 {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    margin-bottom: 12px;
}
.input-row {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-bottom: 8px;
}
.input-row label {
    font-weight: 600;
    font-size: 0.9rem;
    min-width: 24px;
    color: var(--text-muted);
}
input[type="text"],
input[type="number"] {
    flex: 1;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    color: var(--text);
    background: var(--card);
    transition: border-color 0.2s;
    min-width: 0;
}
input[type="text"]:focus,
input[type="number"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}
.rgb-inputs {
    display: flex;
    gap: 8px;
}
.rgb-inputs .input-row {
    flex: 1;
    margin-bottom: 0;
}
button {
    width: 100%;
    padding: 10px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    margin-top: 12px;
}
button:hover { background: var(--primary-hover); }
button:active { transform: scale(0.98); }
.color-preview {
    margin-top: 20px;
    height: 80px;
    border-radius: 8px;
    border: 1.5px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s;
    position: relative;
    overflow: hidden;
}
.color-preview .preview-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 10px;
    border-radius: 4px;
    background: rgba(0,0,0,0.5);
    color: #fff;
}
.color-values {
    margin-top: 12px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
}
.color-values .chip {
    padding: 4px 12px;
    background: #f1f5f9;
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.8rem;
    font-family: "JetBrains Mono", monospace;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.15s;
}
.color-values .chip:hover {
    border-color: var(--primary);
    color: var(--primary);
}

CSS After Head

function rgbToHex(r, g, b) {
    r = Math.max(0, Math.min(255, Math.round(r)));
    g = Math.max(0, Math.min(255, Math.round(g)));
    b = Math.max(0, Math.min(255, Math.round(b)));
    return "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1).toUpperCase();
}
function hexToRgb(hex) {
    var 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 updatePreview(hex, rgb) {
    var preview = document.getElementById("result");
    preview.style.backgroundColor = hex;
    var luminance = (0.299 * rgb.r + 0.587 * rgb.g + 0.114 * rgb.b) / 255;
    var label = document.getElementById("previewLabel");
    label.style.background = luminance > 0.5 ? "rgba(0,0,0,0.6)" : "rgba(255,255,255,0.8)";
    label.style.color = luminance > 0.5 ? "#fff" : "#000";
    label.textContent = hex;
    document.getElementById("chipHex").textContent = hex;
    document.getElementById("chipRgb").textContent = "rgb(" + rgb.r + ", " + rgb.g + ", " + rgb.b + ")";
}
function toRGB() {
    var input = document.getElementById("HexInput").value.trim();
    var hexColor = "#" + (input.length ? input : "000000");
    var rgbColor = hexToRgb(hexColor);
    if (!rgbColor) return;
    document.getElementById("RGBInputR").value = rgbColor.r;
    document.getElementById("RGBInputG").value = rgbColor.g;
    document.getElementById("RGBInputB").value = rgbColor.b;
    updatePreview(hexColor.toUpperCase(), rgbColor);
}
function toHEX() {
    var r = Number(document.getElementById("RGBInputR").value) || 0;
    var g = Number(document.getElementById("RGBInputG").value) || 0;
    var b = Number(document.getElementById("RGBInputB").value) || 0;
    var hex = rgbToHex(r, g, b);
    document.getElementById("HexInput").value = hex.replace("#", "");
    updatePreview(hex, {r: r, g: g, b: b});
}
function copyValue(el) {
    navigator.clipboard.writeText(el.textContent).then(function() {
        var orig = el.textContent;
        el.textContent = "Copied!";
        setTimeout(function() { el.textContent = orig; }, 800);
    });
}
document.addEventListener("DOMContentLoaded", function() { toRGB(); });
document.addEventListener("keydown", function(e) { if (e.key === "Enter") { toRGB(); toHEX(); } });

JS Before HTML Body

HTML Body Attrs

<div class="container">
    <h1>HEX / RGB Color Converter</h1>

    <div class="converter-section">
        <h2>HEX to RGB</h2>
        <div class="input-row">
            <label for="HexInput">#</label>
            <input type="text" id="HexInput" placeholder="e.g. 6366F1" value="6366F1" maxlength="6">
        </div>
        <button onclick="toRGB()">Convert to RGB</button>
    </div>

    <div class="converter-section">
        <h2>RGB to HEX</h2>
        <div class="rgb-inputs">
            <div class="input-row">
                <label for="RGBInputR">R</label>
                <input type="number" id="RGBInputR" min="0" max="255" value="99">
            </div>
            <div class="input-row">
                <label for="RGBInputG">G</label>
                <input type="number" id="RGBInputG" min="0" max="255" value="102">
            </div>
            <div class="input-row">
                <label for="RGBInputB">B</label>
                <input type="number" id="RGBInputB" min="0" max="255" value="241">
            </div>
        </div>
        <button onclick="toHEX()">Convert to HEX</button>
    </div>

    <div class="color-preview" id="result">
        <span class="preview-label" id="previewLabel">#6366F1</span>
    </div>
    <div class="color-values">
        <span class="chip" id="chipHex" onclick="copyValue(this)">#6366F1</span>
        <span class="chip" id="chipRgb" onclick="copyValue(this)">rgb(99, 102, 241)</span>
    </div>
</div>

HTML Body

HTML Foot

JS After HTML Body