Midnight Express
#21263a
A blue that is nearly neutral — the hue shows only against a true grey. It is dark — it carries white text and needs care with black.
Hex
#21263a
RGB
33, 38, 58
OKLCh
27.4% 0.038 272.9°
CIELAB (D50)
15.4, 2.4, -13.8
What is true of this colour, and of no other
- No other named colour in the set is within ΔE00 2 of it — it stands alone.
- It uses only 22% 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 101.8; 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 5.1 — no blue cone.
Text on this colour
White text
14.97:1 — passes AA
Black text
1.40:1 — fails AA
White text is the better of the two at14.97:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#21263a
protanopia
#25253a · ΔE00 2.7
deuteranopia
#25253a · ΔE00 2.9
tritanopia
#242442 · ΔE00 5.1
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isSpinel Stone Black at ΔE00 2.026: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.
- Spinel Stone BlackΔE00 2.026 · #272a3b
- Eclipse ElixirΔE00 2.177 · #1f2133
- KonΔE00 2.376 · #192236
- Latin CharmΔE00 2.645 · #292e44
- Moonless MysteryΔE00 2.749 · #1e2433
- Sea GoingΔE00 2.77 · #2a2e44
- Blue ExultΔE00 2.933 · #2b2f43
- Navy BlazerΔE00 2.94 · #2a2e3f
- Black VelvetΔE00 2.958 · #222233
- Sombre NightΔE00 2.958 · #161e34
- ValhallaΔE00 2.978 · #2a2b41
- Atlantic CharterΔE00 3.06 · #2b2f41
8 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.