HueComb

Crimson Blaze

#ad3d1e

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

Hex

#ad3d1e

RGB

173, 61, 30

OKLCh

51.4% 0.153 35.9°

CIELAB (D50)

42.3, 45.5, 43.1

What is true of this colour, and of no other

  • 5 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 79.4; on black, Lc -22.5. 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 32.4 and 35.3 and 38.8 — 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

#ad3d1e

protanopia

#545420 · ΔE00 32.4

deuteranopia

#6e6e0f · ΔE00 35.3

tritanopia

#848400 · ΔE00 38.8

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isAzshara Vein at ΔE00 1.375: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

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