Function sink

packages/ui/src/theme/color.ts:180–185

(tone: number)

        h: base.h,
      })
    const sink = (tone: number) =>
      oklchToHex({
        l: base.l * (1 - tone),
        c: base.c * Math.max(0, 1 - tone * (isDark ? 0.12 : 0.3)),
        h: base.h,
      })
    const bg = isDark
      ? sink(clamp(0.19 + Math.max(0, base.l - 0.12) * 0.33 + base.c * 1.95, 0.17, 0.27))
      : base.l < 0.82