Blood of Zeus

#640f09

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

Hex

#640f09

RGB

100, 15, 9

OKLCh

32.7% 0.119 29.3°

CIELAB (D50)

20.8, 37.0, 28.0

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 97.9; 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 27.5 and 30.5 and 32.7 — no red cone.

Text on this colour

White text

13.01:1 — passes AA

Black text

1.61:1 — fails AA

White text is the better of the two at13.01:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#640f09

protanopia

#25250b · ΔE00 27.5

deuteranopia

#393900 · ΔE00 30.5

tritanopia

#484800 · ΔE00 32.7

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isBeastly Red at ΔE00 0.915: 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.