Twilight Meadow
#51a5a4
A cyan that is muted. It is light — black text sits on it comfortably, white text does not.
Hex
#51a5a4
RGB
81, 165, 164
OKLCh
67.0% 0.082 194.3°
CIELAB (D50)
62.6, -26.8, -7.7
What is true of this colour, and of no other
- 2 other named colours sit within ΔE00 2 of it.
- It uses 71% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 55.0; on black, Lc -46.8. 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 22.4 and 24.1 and 30.9 — no red cone.
Text on this colour
White text
2.89:1 — fails AA
Black text
7.27:1 — passes AA
Black text is the better of the two at7.27:1. That is enough for body text.
As text on white, it needs to change
#2b8382 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved.
The same colour, with one cone missing
As you see it
#51a5a4
protanopia
#9e9ea4 · ΔE00 22.4
deuteranopia
#9393a5 · ΔE00 24.1
tritanopia
#8484ff · ΔE00 30.9
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isTeal Bayou at ΔE00 1.528: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Teal BayouΔE00 1.528 · #57a1a0
- Emerald SucculentΔE00 1.589 · #55aaaa
- Tidal TealΔE00 2.033 · #43a7aa
- Blue RacerΔE00 2.315 · #4ba4a9
- Blue TurquoiseΔE00 2.367 · #50abae
- VerandaΔE00 2.418 · #61a9a5
- Paradise IslandΔE00 2.545 · #5aa7a0
- Aqua FrescoΔE00 2.661 · #4a9fa3
- RockpoolΔE00 2.69 · #519ea1
- Modal BlueΔE00 2.905 · #40a6ac
- Cold NorthΔE00 2.927 · #559c9b
- Coolbox Ice TurquoiseΔE00 2.931 · #499c9d
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.