Hydro
#49747f
A cyan 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
#49747f
RGB
73, 116, 127
OKLCh
53.2% 0.051 215.7°
CIELAB (D50)
46.0, -13.2, -11.1
What is true of this colour, and of no other
- 5 other named colours sit within ΔE00 2 of it.
- It uses 54% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 75.3; on black, Lc -26.4. 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 16.8 and 17.9 and 19.0 — no red cone.
Text on this colour
White text
5.14:1 — passes AA
Black text
4.09:1 — large text only
White text is the better of the two at5.14:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#49747f
protanopia
#70707f · ΔE00 16.8
deuteranopia
#6a6a80 · ΔE00 17.9
tritanopia
#6262c2 · ΔE00 19.0
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isFlip at ΔE00 1.137: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- FlipΔE00 1.137 · #45747e
- Wild RiverΔE00 1.658 · #447382
- Silken PeacockΔE00 1.814 · #427584
- Winter StormΔE00 1.839 · #4b7079
- Tornado SeasonΔE00 1.903 · #4d7179
- Holy WaterΔE00 2.332 · #466e77
- Ocean CurrentΔE00 2.496 · #537783
- Majestic MountainΔE00 2.537 · #447788
- Vining IvyΔE00 2.615 · #4b7378
- Sky SpaceΔE00 2.658 · #4b7b87
- Sotek GreenΔE00 3.023 · #47788a
- Grand RapidsΔE00 3.046 · #38707e
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.