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Update RGBToHSL.md

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Angelos Chalaris
2020-10-04 11:25:12 +03:00
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parent 06ca974715
commit 405a7b1c03
1 changed files with 14 additions and 5 deletions
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19
snippets/RGBToHSL.md
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@ -10,18 +10,27 @@ Converts a RGB color tuple to HSL format.
- The range of the resulting values is H: [0, 360], S: [0, 100], L: [0, 100].
```js
const RGBToHSL = ((r, g, b) => {
const RGBToHSL = (r, g, b) => {
r /= 255;
g /= 255;
b /= 255;
const l = Math.max(r, g, b);
const s = l - Math.min(r, g, b);
const h =
(s) ? (l === r) ? (g-b)/s : (l === g) ? 2 + (b-r)/s : 4 + (r-g)/s : 0;
return [ (60*h<0)?(60*h+360):(60*h) , 100*((s) ? (l<=0.5) ? s/((2*l-s)) : s/(2 - (2*l-s)) : 0), 100*(2*l-s)/2];
const h = s
? l === r
? (g - b) / s
: l === g
? 2 + (b - r) / s
: 4 + (r - g) / s
: 0;
return [
60 * h < 0 ? 60 * h + 360 : 60 * h,
100 * (s ? (l <= 0.5 ? s / (2 * l - s) : s / (2 - (2 * l - s))) : 0),
(100 * (2 * l - s)) / 2,
];
};
```
```js
RGBToHSL(45, 23, 11); // [21.17647058823529, 60.71428571428573, 10.980392156862745]
RGBToHSL(45, 23, 11); // [21.17647, 60.71428, 10.98039]
```