Chorizo

#aa0011

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

Hex

#aa0011

RGB

170, 0, 17

OKLCh

46.4% 0.189 26.8°

CIELAB (D50)

35.9, 59.8, 44.2

What is true of this colour, and of no other

  • 5 other named colours sit within ΔE00 2 of it.
  • 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 84.2; on black, Lc -17.8. 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 36.4 and 40.9 and 44.8 — no red cone.

Text on this colour

White text

7.73:1 — passes AA

Black text

2.72:1 — fails AA

White text is the better of the two at7.73:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#aa0011

protanopia

#3c3c14 · ΔE00 36.4

deuteranopia

#606000 · ΔE00 40.9

tritanopia

#7b7b00 · ΔE00 44.8

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCrisp Christmas Cranberries at ΔE00 1.065: 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.