Mermaid Blues
#004477
A blue that is muted. It is dark — it carries white text and needs care with black.
Hex
#004477
RGB
0, 68, 119
OKLCh
37.9% 0.105 249.2°
CIELAB (D50)
27.5, -2.6, -35.1
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 92.7; on black, Lc -9.8. 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 12.5 and 12.1 and 12.0 — no red cone.
Text on this colour
White text
10.03:1 — passes AA
Black text
2.09:1 — fails AA
White text is the better of the two at10.03:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#004477
protanopia
#404077 · ΔE00 12.5
deuteranopia
#393977 · ΔE00 12.1
tritanopia
#3030a1 · ΔE00 12.0
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isMacragge Blue at ΔE00 0.425: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Macragge BlueΔE00 0.425 · #004577
- Kolibri BlueΔE00 1.035 · #00477a
- Inoffensive BlueΔE00 1.336 · #114477
- Epic AdventureΔE00 1.341 · #0e426f
- Lost RiverΔE00 1.393 · #08457e
- Twilight BlueΔE00 1.404 · #0a437a
- Medici BlueΔE00 1.476 · #104773
- Honourable BlueΔE00 1.611 · #164576
- BridgeportΔE00 1.71 · #004683
- Indigo DyeΔE00 1.822 · #00416c
- Thunder NightΔE00 1.958 · #1a4876
- LinearΔE00 1.973 · #164975
12 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.