Vulcanised
#424443
A neutral that has no useful hue — it reads as a grey. It is dark — it carries white text and needs care with black.
Hex
#424443
RGB
66, 68, 67
OKLCh
38.4% 0.003 164.9°
CIELAB (D50)
28.6, -1.0, 0.3
What is true of this colour, and of no other
- 11 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 almost none of the chroma available here: this is a grey with a trace of hue rather than a colour.
- As text on white it measures APCA Lc 92.8; on black, Lc -9.7. 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.
- All three dichromacies see it as very nearly the same colour you do: its hue is not the part carrying its identity.
Text on this colour
White text
9.82:1 — passes AA
Black text
2.14:1 — fails AA
White text is the better of the two at9.82:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#424443
protanopia
#444443 · ΔE00 1.3
deuteranopia
#434343 · ΔE00 1.4
tritanopia
#434349 · ΔE00 4.5
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isMedium Black at ΔE00 1.298: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Medium BlackΔE00 1.298 · #444443
- Black SuedeΔE00 1.303 · #434342
- Black HeronΔE00 1.468 · #444647
- Goshawk GreyΔE00 1.531 · #444444
- BauhausΔE00 1.564 · #3f4040
- Black PantherΔE00 1.602 · #424242
- Machine Gun MetalΔE00 1.602 · #454545
- Balsamic ReductionΔE00 1.682 · #434340
- Wood CharcoalΔE00 1.736 · #464646
- Totally BlackΔE00 1.951 · #3f4041
- TuataraΔE00 1.971 · #454642
- Brattle SpruceΔE00 2.034 · #454743
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.