Forbidden Passion

#661020

A red that is muted. It is dark — it carries white text and needs care with black.

Hex

#661020

RGB

102, 16, 32

OKLCh

33.6% 0.118 16.8°

CIELAB (D50)

21.6, 38.1, 15.2

What is true of this colour, and of no other

  • One other named colour sits within ΔE00 2 of it.
  • It uses 88% 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 97.4; 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 26.2 and 31.0 and 37.4 — no red cone.

Text on this colour

White text

12.65:1 — passes AA

Black text

1.66:1 — fails AA

White text is the better of the two at12.65:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#661020

protanopia

#262621 · ΔE00 26.2

deuteranopia

#3a3a1c · ΔE00 31.0

tritanopia

#4a4a00 · ΔE00 37.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDark Humour at ΔE00 0.711: below 1.0 — an ordinary observer cannot tell these apart, even side by side. 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.