Sea Creature
#00586d
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
#00586d
RGB
0, 88, 109
OKLCh
42.6% 0.078 221.3°
CIELAB (D50)
33.8, -17.2, -18.9
What is true of this colour, and of no other
- 12 other named colours sit within ΔE00 2 of it — this part of the space is crowded, and the names here are finer distinctions than most people make.
- It sits exactly on the sRGB boundary: at this lightness and hue the gamut has nothing left, and a wider display would show a more colourful version of it.
- As text on white it measures APCA Lc 87.3; on black, Lc -14.8. 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 20.9 and 20.8 and 20.1 — no red cone.
Text on this colour
White text
8.03:1 — passes AA
Black text
2.62:1 — fails AA
White text is the better of the two at8.03:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#00586d
protanopia
#53536d · ΔE00 20.9
deuteranopia
#4a4a6e · ΔE00 20.8
tritanopia
#3f3fb2 · ΔE00 20.1
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDeep Lagoon at ΔE00 0.665: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Deep LagoonΔE00 0.665 · #005a6f
- SubmersibleΔE00 0.918 · #00576e
- PlungeΔE00 1.172 · #035568
- SubaqueousΔE00 1.297 · #00576f
- Connor’s LakefrontΔE00 1.485 · #175a6c
- Octagon OceanΔE00 1.623 · #085b73
- Brave New TealΔE00 1.665 · #015b6d
- CorsairΔE00 1.683 · #18576c
- Rainy MorningΔE00 1.825 · #005566
- OceansideΔE00 1.842 · #015a6b
- Blue CoralΔE00 1.906 · #1d5a6e
- BosporusΔE00 1.925 · #015d75
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.