Tuxedo
#3f3c43
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
#3f3c43
RGB
63, 60, 67
OKLCh
36.2% 0.013 305.1°
CIELAB (D50)
25.8, 2.5, -3.8
What is true of this colour, and of no other
- 6 other named colours sit within ΔE00 2 of it.
- It uses only 7% 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 95.1; on black, Lc -7.5. 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 7.0 — no blue cone.
Text on this colour
White text
10.83:1 — passes AA
Black text
1.94:1 — fails AA
White text is the better of the two at10.83:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#3f3c43
protanopia
#3c3c43 · ΔE00 1.9
deuteranopia
#3d3d43 · ΔE00 2.0
tritanopia
#3e3e3a · ΔE00 7.0
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isBlue Graphite at ΔE00 1.503: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Blue GraphiteΔE00 1.503 · #3a383f
- Bluish BlackΔE00 1.601 · #413f44
- Deep GalaxyΔE00 1.767 · #414048
- Midnight EscapeΔE00 1.784 · #403c40
- Ship GreyΔE00 1.819 · #3e3a44
- Moonless NightΔE00 1.99 · #3c393d
- Bohemian BlackΔE00 2.02 · #3b373c
- Volcanic SandΔE00 2.2 · #404048
- Shiny RubberΔE00 2.283 · #3a363b
- Nine IronΔE00 2.317 · #46434a
- Black MarlinΔE00 2.362 · #383740
- NevermoreΔE00 2.427 · #403940
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.