HueComb

Smouldering

#b6321e

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

Hex

#b6321e

RGB

182, 50, 30

OKLCh

51.7% 0.172 31.6°

CIELAB (D50)

42.4, 52.8, 43.9

What is true of this colour, and of no other

  • 4 other named colours sit within ΔE00 2 of it.
  • It uses 87% of the chroma sRGB can show at this lightness and hue — close enough to the boundary that a wider display would show it slightly more vividly.
  • As text on white it measures APCA Lc 79.0; on black, Lc -22.8. 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 35.0 and 38.8 and 42.8 — no red cone.

Text on this colour

White text

6.06:1 — passes AA

Black text

3.46:1 — large text only

White text is the better of the two at6.06:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#b6321e

protanopia

#505020 · ΔE00 35.0

deuteranopia

#6f6f0b · ΔE00 38.8

tritanopia

#888800 · ΔE00 42.8

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRed Death at ΔE00 1.117: 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.