Nuit Blanche
#1e488f
A blue that is muted. It is mid — the hardest range to put text on, either colour struggles.
Hex
#1e488f
RGB
30, 72, 143
OKLCh
41.4% 0.127 260.3°
CIELAB (D50)
30.9, 6.4, -44.4
What is true of this colour, and of no other
- 13 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 74% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 89.8; on black, Lc -12.5. 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.
- protanopia and deuteranopia and tritanopia shift it by ΔE00 8.4 and 8.3 and 8.9 — no red cone.
Text on this colour
White text
8.83:1 — passes AA
Black text
2.38:1 — fails AA
White text is the better of the two at8.83:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#1e488f
protanopia
#45458f · ΔE00 8.4
deuteranopia
#3f3f8f · ΔE00 8.3
tritanopia
#3838af · ΔE00 8.9
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isIndigo Hamlet at ΔE00 0.812: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Indigo HamletΔE00 0.812 · #1f4788
- Cascade TwilightΔE00 0.942 · #234893
- Pacific NavyΔE00 1.012 · #25488a
- LiberalistΔE00 1.435 · #0c4792
- UnityΔE00 1.586 · #264d8e
- Mondrian BlueΔE00 1.589 · #0f478c
- Space ExplorerΔE00 1.605 · #114499
- Olympian BlueΔE00 1.761 · #1c4c8c
- Maritime OutpostΔE00 1.766 · #1e4581
- Fright NightΔE00 1.907 · #004499
- Le Grand BleuΔE00 1.953 · #244e94
- Florida WatersΔE00 1.966 · #2a4983
7 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.