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javascript/snippets/rgb-to-hsb.md

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+---
+title: RGB to HSB
+type: snippet
+tags: [math]
+cover: dark-leaves
+dateModified: 2020-10-22T20:24:30+03:00
+---
+
+Converts a RGB color tuple to HSB format.
+
+- Use the [RGB to HSB conversion formula](https://en.wikipedia.org/wiki/HSL_and_HSV#From_RGB) to convert to the appropriate format.
+- The range of all input parameters is [0, 255].
+- The range of the resulting values is H: [0, 360], S: [0, 100], B: [0, 100].
+
+```js
+const RGBToHSB = (r, g, b) => {
+  r /= 255;
+  g /= 255;
+  b /= 255;
+  const v = Math.max(r, g, b),
+    n = v - Math.min(r, g, b);
+  const h =
+    n === 0 ? 0 : n && v === r ? (g - b) / n : v === g ? 2 + (b - r) / n : 4 + (r - g) / n;
+  return [60 * (h < 0 ? h + 6 : h), v && (n / v) * 100, v * 100];
+};
+```
+
+```js
+RGBToHSB(252, 111, 48);
+// [18.529411764705856, 80.95238095238095, 98.82352941176471]
+```