fix(color): rescale labXyz(), use D50 for LCH->RGB

thi-ng · Feb 2, 2021 · 9e59545 · 9e59545
1 parent 69e2287
commit 9e59545
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/packages/color/src/lab/lab-xyz.ts b/packages/color/src/lab/lab-xyz.ts
@@ -17,12 +17,12 @@ const transform = (x: number) => {
  * @param white
  */
 export const labXyz = (out: Color | null, src: ReadonlyColor, white = D50) => {
-    const y = (src[0] + 16) / 116;
+    const y = (src[0] + 0.16) / 1.16;
     return setC4(
         out || src,
-        transform(src[1] / 500 + y) * white[0],
+        transform(src[1] / 5.0 + y) * white[0],
         transform(y) * white[1],
-        transform(y - src[2] / 200) * white[2],
+        transform(y - src[2] / 2.0) * white[2],
         ensureAlpha(src[3])
     );
 };

diff --git a/packages/color/src/rgb/rgb.ts b/packages/color/src/rgb/rgb.ts
@@ -51,7 +51,7 @@ export const rgb = <ColorFactory<RGB>>defColor({
         hsv: hsvRgb,
         lab50: labRgb,
         lab65: labRgbD65,
-        lch: [lchLab, labRgbD65],
+        lch: [lchLab, labRgb],
         oklab: oklabRgb,
         rgb: set4,
         srgb: srgbRgb,