Eclipse
#3f3939
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
#3f3939
RGB
63, 57, 57
OKLCh
35.1% 0.008 17.6°
CIELAB (D50)
24.6, 2.7, 1.0
What is true of this colour, and of no other
- 2 other named colours sit within ΔE00 2 of it.
- It uses only 6% of the chroma available at this lightness and hue — there is a far more vivid version of this colour inside sRGB.
- As text on white it measures APCA Lc 96.1; 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.
- tritanopia shifts it by ΔE00 14.8 — no blue cone.
Text on this colour
White text
11.32:1 — passes AA
Black text
1.86:1 — fails AA
White text is the better of the two at11.32:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#3f3939
protanopia
#3a3a39 · ΔE00 4.0
deuteranopia
#3b3b39 · ΔE00 4.3
tritanopia
#3c3c20 · ΔE00 14.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isAfter Dark at ΔE00 1.374: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- After DarkΔE00 1.374 · #3c3535
- Binrouji BlackΔE00 1.434 · #433d3c
- PitchΔE00 2.016 · #423937
- Brownish BlackΔE00 2.069 · #413936
- Indigo Ink BrownΔE00 2.275 · #393432
- Black TruffleΔE00 2.393 · #463d3e
- Deep Forest BrownΔE00 2.508 · #393437
- KilimanjaroΔE00 2.533 · #3a3532
- GondolaΔE00 2.542 · #373332
- Knights of the DesertΔE00 2.555 · #403c39
- Off BroadwayΔE00 2.605 · #433f3d
- EwaΔE00 2.623 · #454042
9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.