Chill of the Night
#256d8d
A blue that is muted. It is mid — the hardest range to put text on, either colour struggles.
Hex
#256d8d
RGB
37, 109, 141
OKLCh
50.5% 0.086 231.4°
CIELAB (D50)
42.7, -14.4, -24.5
What is true of this colour, and of no other
- 9 other named colours sit within ΔE00 2 of it.
- It uses 84% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 78.5; on black, Lc -23.3. 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 19.2 and 18.4 and 16.8 — no red cone.
Text on this colour
White text
5.75:1 — passes AA
Black text
3.65:1 — large text only
White text is the better of the two at5.75:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#256d8d
protanopia
#68688d · ΔE00 19.2
deuteranopia
#5f5f8e · ΔE00 18.4
tritanopia
#5353d6 · ΔE00 16.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isFaience at ΔE00 0.611: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- FaienceΔE00 0.611 · #2a6d8b
- Ocean CallΔE00 1.282 · #2b6c8e
- Saxony BlueΔE00 1.37 · #216b88
- Sea GoddessΔE00 1.581 · #216987
- BondiΔE00 1.781 · #16698c
- Pure Light BlueΔE00 1.805 · #036c91
- Big Ocean WaveΔE00 1.849 · #34708f
- Tropic SeaΔE00 1.866 · #016f92
- CopacabanaΔE00 1.963 · #006c8d
- CairnsΔE00 2.124 · #0a6b92
- Living StreamΔE00 2.156 · #37708c
- Techno BlueΔE00 2.19 · #006b8b
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.