From cc2dcebfab0b257b8deae84ca875537bb126995f Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor@ccxvii.net>
Date: Fri, 28 Feb 2025 00:53:04 +0100
Subject: colors

---
 tools/colors.js | 60 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 tools/colors.js

(limited to 'tools/colors.js')

diff --git a/tools/colors.js b/tools/colors.js
new file mode 100644
index 0000000..1f6e771
--- /dev/null
+++ b/tools/colors.js
@@ -0,0 +1,60 @@
+function rgb_to_hsl(rgb, add=0, scale=1) {
+	if (typeof rgb === "string") {
+		if (rgb[0] === "#")
+			rgb = rgb.substring(1)
+		rgb = parseInt(rgb, 16)
+	}
+
+	let r = ((rgb >> 16) & 255) / 255
+	let g = ((rgb >> 8) & 255) / 255
+	let b = ((rgb) & 255) / 255
+	let cmin = Math.min(r, g, b)
+	let cmax = Math.max(r, g, b)
+	let delta = cmax - cmin
+	let h = 0, s = 0, l = 0
+
+	if (delta == 0)
+		h = 0
+	else if (cmax == r)
+		h = ((g - b) / delta) % 6
+	else if (cmax == g)
+		h = (b - r) / delta + 2
+	else
+		h = (r - g) / delta + 4
+
+	h = Math.round(h * 60)
+
+	if (h < 0)
+		h += 360
+
+	l = (cmax + cmin) / 2
+
+	s = delta == 0 ? 0 : delta / (1 - Math.abs(2 * l - 1))
+
+	l = Math.max(0, Math.min(1, l * scale + add))
+
+	s = Math.round(s * 100)
+	l = Math.round(l * 100)
+
+	return "hsl(" + h + "," + s + "%," + l + "%)"
+}
+
+function foo(sel, rgb) {
+	let bg = rgb_to_hsl(rgb, 0.00, 1.00)
+	let hi = rgb_to_hsl(rgb, 0.10, 1.00)
+	let sh = rgb_to_hsl(rgb, -0.10, 1.00)
+	let bd = rgb_to_hsl(rgb, 0.00, 0.33)
+	console.log(sel + ` { background-color: ${bg}; border-color: ${hi} ${sh} ${sh} ${hi}; box-shadow: 0 0 0 1px ${bd}, 0px 1px 4px #0008; }`)
+}
+
+function bar(sel, rgb) {
+	hsl = rgb_to_hsl(rgb)
+	console.log(sel + ` { background-color: ${hsl} }`)
+}
+
+foo(".token.white", "cccccc")
+foo(".token.red", "ef0500")
+foo(".token.pink", "da997b")
+foo(".token.brown", "bbb079")
+foo(".token.gray", "a6a6a8")
+
-- 
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