Bitter Chocolate

#4f2923

A red that is nearly neutral — the hue shows only against a true grey. It is dark — it carries white text and needs care with black.

Hex

#4f2923

RGB

79, 41, 35

OKLCh

32.9% 0.058 30.0°

CIELAB (D50)

21.7, 17.6, 12.1

What is true of this colour, and of no other

  • 3 other named colours sit within ΔE00 2 of it.
  • It uses 44% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 98.3; on black, Lc 0.0. 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 20.4 and 22.3 and 25.7 — no red cone.

Text on this colour

White text

12.55:1 — passes AA

Black text

1.67:1 — fails AA

White text is the better of the two at12.55:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#4f2923

protanopia

#2f2f23 · ΔE00 20.4

deuteranopia

#373721 · ΔE00 22.3

tritanopia

#3f3f00 · ΔE00 25.7

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isTorrefacto Roast at ΔE00 1.712: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

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