Quiet Abyss as a scale
Eleven steps from #160435, built by moving lightness in OKLCh and keeping the hue where it is. Every step is gamut-mapped by giving up chroma, never by clipping channels — clipping is what turns a light blue purple.
| Stop | Hex | OKLCh L | Chroma | On white | On black | APCA on white | ΔE00 from the step above |
|---|---|---|---|---|---|---|---|
| 50 | #f5f3ff | 97.0% | 0.015 ·capped | 1.09:1 | 19.20:1 | 0 | — |
| 100 | #ebe7ff | 93.8% | 0.032 ·capped | 1.21:1 | 17.40:1 | 10 | 5.3 |
| 200 | #d6ceff | 87.4% | 0.068 ·capped | 1.49:1 | 14.14:1 | 23 | 8.9 |
| 300 | #c2b7f6 | 81.0% | 0.089 | 1.85:1 | 11.38:1 | 35 | 6.2 |
| 400 | #aea2e0 | 74.6% | 0.089 | 2.31:1 | 9.09:1 | 46 | 5.5 |
| 500 | #9b8fcb | 68.2% | 0.089 | 2.93:1 | 7.16:1 | 56 | 6.1 |
| 600 | #877bb7 | 61.8% | 0.089 | 3.77:1 | 5.57:1 | 65 | 6.7 |
| 700 | #7569a2 | 55.4% | 0.089 | 4.91:1 | 4.27:1 | 74 | 7.4 |
| 800 | #62568e | 49.0% | 0.089 | 6.46:1 | 3.25:1 | 82 | 6.9 |
| 900 | #3a2d61 | 34.0% | 0.089 | 12.13:1 | 1.73:1 | 98 | 13.8 |
| 950 | #150334 | 18.0% | 0.089 | 19.15:1 | 1.10:1 | 105 | 11.8 |
What is true of this ramp
- 10 of the 10 adjacent pairs differ by ΔE00 2 or more. Every step here is a step a reader can see.
- The tightest pair is 50 to100, at ΔE00 5.3.
- 3 steps had to give up chroma to stay inside sRGB — 50, 100, 200. A wider display would show them more vividly.
- 4 steps clear 4.5:1 on white (700, 800, 900, 950), and 7 on black (50, 100, 200, 300, 400, 500, 600).
Harmonies from Quiet Abyss
complement
the hue directly opposite, at the same lightness. #131400 (+180°) — chroma capped by sRGB.
analogous
the two neighbours 30° either side. #000c39 (+-30°), #230028 (+30°) — chroma capped by sRGB.
split complement
the two hues either side of the opposite, 30° apart from it. #1a1000 (+150°), #001900 (+210°) — chroma capped by sRGB.
triad
the circle divided in three. #220b00 (+120°), #001711 (+240°) — chroma capped by sRGB.
tetrad
the circle divided in four. #2b0003 (+90°), #131400 (+180°), #001618 (+270°) — chroma capped by sRGB.
The ramp as CSS
:root {
--quiet-abyss-50: #f5f3ff;
--quiet-abyss-100: #ebe7ff;
--quiet-abyss-200: #d6ceff;
--quiet-abyss-300: #c2b7f6;
--quiet-abyss-400: #aea2e0;
--quiet-abyss-500: #9b8fcb;
--quiet-abyss-600: #877bb7;
--quiet-abyss-700: #7569a2;
--quiet-abyss-800: #62568e;
--quiet-abyss-900: #3a2d61;
--quiet-abyss-950: #150334;
}