Sunken Harbour
#1c3d44
A cyan 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
#1c3d44
RGB
28, 61, 68
OKLCh
33.8% 0.040 213.2°
CIELAB (D50)
23.5, -10.8, -8.3
What is true of this colour, and of no other
- 2 other named colours sit within ΔE00 2 of it.
- It uses 68% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 96.7; 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.
- protanopia and deuteranopia and tritanopia shift it by ΔE00 14.2 and 15.4 and 19.0 — no red cone.
Text on this colour
White text
11.66:1 — passes AA
Black text
1.80:1 — fails AA
White text is the better of the two at11.66:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#1c3d44
protanopia
#3a3a44 · ΔE00 14.2
deuteranopia
#363644 · ΔE00 15.4
tritanopia
#303070 · ΔE00 19.0
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isRoyal Neptune at ΔE00 0.761: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Royal NeptuneΔE00 0.761 · #1c3b42
- Bay Isle PointeΔE00 1.345 · #214048
- Ghostlands CoalΔE00 2.294 · #113c42
- Japanese IndigoΔE00 2.343 · #264348
- NordicΔE00 2.409 · #1d393c
- Emerald ForestΔE00 2.495 · #224347
- Winter WavesΔE00 2.667 · #21424d
- Blue HillΔE00 2.695 · #1e454d
- Mysterious WatersΔE00 2.844 · #27454a
- Everglade DeckΔE00 2.882 · #25464d
- Firmament BlueΔE00 2.96 · #11353f
- Ai IndigoΔE00 3.099 · #274447
9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.