Harbour Blue
#417491
A blue that is nearly neutral — the hue shows only against a true grey. It is mid — the hardest range to put text on, either colour struggles.
Hex
#417491
RGB
65, 116, 145
OKLCh
53.5% 0.071 235.2°
CIELAB (D50)
46.2, -11.2, -21.5
What is true of this colour, and of no other
- 6 other named colours sit within ΔE00 2 of it.
- It uses 63% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 75.0; on black, Lc -26.8. 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 17.1 and 16.6 and 13.6 — no red cone.
Text on this colour
White text
5.08:1 — passes AA
Black text
4.13:1 — large text only
White text is the better of the two at5.08:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#417491
protanopia
#707091 · ΔE00 17.1
deuteranopia
#686892 · ΔE00 16.6
tritanopia
#5f5fd3 · ΔE00 13.6
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDownpour at ΔE00 1.412: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- DownpourΔE00 1.412 · #43718b
- Soul SearchΔE00 1.527 · #377290
- Cry Me a RiverΔE00 1.71 · #427898
- Cottage by the SeaΔE00 1.872 · #357697
- Sojourn BlueΔE00 1.89 · #416f8b
- Sea DrifterΔE00 1.979 · #4b7794
- Living StreamΔE00 2.097 · #37708c
- Male BettaΔE00 2.125 · #347699
- Big Ocean WaveΔE00 2.144 · #34708f
- Sea SwirlΔE00 2.359 · #427a9a
- Crashing WavesΔE00 2.521 · #3e6f87
- Big Sur Blue JadeΔE00 2.579 · #3f6e8e
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.