Water Nymph
#81d0df
A cyan that is muted. It is very light — it works as a page background, not as text.
Hex
#81d0df
RGB
129, 208, 223
OKLCh
81.2% 0.080 211.0°
CIELAB (D50)
78.8, -22.4, -15.5
What is true of this colour, and of no other
- 7 other named colours sit within ΔE00 2 of it.
- It uses 57% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 31.7; on black, Lc -71.0. 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 22.6 and 22.8 and 23.2 — no red cone.
Text on this colour
White text
1.75:1 — fails AA
Black text
12.02:1 — passes AA
Black text is the better of the two at12.02:1. That is enough for body text.
As text on white, it needs to change
#2f818f 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
#81d0df
protanopia
#c9c9df · ΔE00 22.6
deuteranopia
#bdbde0 · ΔE00 22.8
tritanopia
#afafff · ΔE00 23.2
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isSpray at ΔE00 0.817: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- SprayΔE00 0.817 · #7ecddd
- Middle BlueΔE00 1.372 · #7ed4e6
- Bluish WaterΔE00 1.389 · #89cfdb
- PiccoloΔE00 1.523 · #8bd2e2
- JulyΔE00 1.722 · #8bd2e3
- Plunging WaterfallΔE00 1.867 · #8cd4df
- Fresh BlueΔE00 1.875 · #8bd6e2
- BayshoreΔE00 2.055 · #89cee0
- Foaming SurfΔE00 2.144 · #90d1dd
- BetsyΔE00 2.157 · #73c9d9
- Sea of TranquillityΔE00 2.165 · #81d1da
- Tanager TurquoiseΔE00 2.171 · #8dd8e7
12 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.