Dear Darling

#a30112

A red that is saturated. It is mid — the hardest range to put text on, either colour struggles.

Hex

#a30112

RGB

163, 1, 18

OKLCh

45.1% 0.183 26.4°

CIELAB (D50)

34.4, 57.9, 41.8

What is true of this colour, and of no other

  • 12 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
  • It sits exactly on the sRGB boundary: at this lightness and hue the gamut has nothing left, and a wider display would show a more colourful version of it.
  • As text on white it measures APCA Lc 85.7; on black, Lc -16.3. The sign is the polarity, which the WCAG ratio discards.
  • Built into an eleven-step scale, 10 of the 10 adjacent pairs stay ΔE00 2 apart — see the ramp.
  • protanopia and deuteranopia and tritanopia shift it by ΔE00 35.5 and 40.3 and 44.0 — no red cone.

Text on this colour

White text

8.17:1 — passes AA

Black text

2.57:1 — fails AA

White text is the better of the two at8.17:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#a30112

protanopia

#393915 · ΔE00 35.5

deuteranopia

#5c5c00 · ΔE00 40.3

tritanopia

#767600 · ΔE00 44.0

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isSpartan Crimson at ΔE00 1.173: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

6 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.