Memorial Black as a scale
Eleven steps from #091101, 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 | #edfbdf | 97.0% | 0.039 | 1.08:1 | 19.44:1 | 0 | — |
| 100 | #e3f0d5 | 93.8% | 0.039 | 1.19:1 | 17.68:1 | 9 | 2.2 |
| 200 | #cedbc0 | 87.4% | 0.039 | 1.45:1 | 14.51:1 | 21 | 4.7 |
| 300 | #b9c6ac | 81.0% | 0.039 | 1.79:1 | 11.76:1 | 33 | 5.0 |
| 400 | #a5b298 | 74.6% | 0.039 | 2.23:1 | 9.41:1 | 44 | 5.4 |
| 500 | #929e84 | 68.2% | 0.039 | 2.82:1 | 7.44:1 | 54 | 5.9 |
| 600 | #7f8a72 | 61.8% | 0.039 | 3.62:1 | 5.80:1 | 64 | 6.5 |
| 700 | #6c775f | 55.4% | 0.039 | 4.71:1 | 4.46:1 | 73 | 7.3 |
| 800 | #5a654d | 49.0% | 0.039 | 6.18:1 | 3.40:1 | 81 | 7.0 |
| 900 | #323c26 | 34.0% | 0.039 | 11.61:1 | 1.81:1 | 97 | 13.9 |
| 950 | #0c1503 | 18.0% | 0.039 | 18.71:1 | 1.12:1 | 105 | 12.6 |
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 2.2.
- No step had to give up chroma: sRGB has room for this hue at every lightness in the ramp.
- 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 Memorial Black
complement
the hue directly opposite, at the same lightness. #13091b (+180°)
analogous
the two neighbours 30° either side. #120e00 (+-30°), #001308 (+30°) — chroma capped by sRGB.
split complement
the two hues either side of the opposite, 30° apart from it. #0a0c1e (+150°), #180714 (+210°)
triad
the circle divided in three. #010f1e (+120°), #1c060b (+240°)
tetrad
the circle divided in four. #001116 (+90°), #13091b (+180°), #1c0703 (+270°) — chroma capped by sRGB.
The ramp as CSS
:root {
--memorial-black-50: #edfbdf;
--memorial-black-100: #e3f0d5;
--memorial-black-200: #cedbc0;
--memorial-black-300: #b9c6ac;
--memorial-black-400: #a5b298;
--memorial-black-500: #929e84;
--memorial-black-600: #7f8a72;
--memorial-black-700: #6c775f;
--memorial-black-800: #5a654d;
--memorial-black-900: #323c26;
--memorial-black-950: #0c1503;
}