HueComb

Emergency

#911911

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

Hex

#911911

RGB

145, 25, 17

OKLCh

42.6% 0.156 29.3°

CIELAB (D50)

31.9, 48.7, 38.4

What is true of this colour, and of no other

  • 10 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 uses 89% 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 88.9; on black, Lc -13.3. 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 32.5 and 36.4 and 39.4 — no red cone.

Text on this colour

White text

8.93:1 — passes AA

Black text

2.35:1 — fails AA

White text is the better of the two at8.93:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#911911

protanopia

#393913 · ΔE00 32.5

deuteranopia

#555500 · ΔE00 36.4

tritanopia

#6a6a00 · ΔE00 39.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isJack and Coke at ΔE00 0.923: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

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