Dark Galaxy
#0018a8
A blue that is saturated. It is dark — it carries white text and needs care with black.
Hex
#0018a8
RGB
0, 24, 168
OKLCh
34.8% 0.217 264.2°
CIELAB (D50)
20.2, 41.8, -77.2
What is true of this colour, and of no other
- 2 other named colours sit within ΔE00 2 of it.
- 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 96.2; on black, Lc 0.0. 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.
- All three dichromacies see it as very nearly the same colour you do: its hue is not the part carrying its identity.
Text on this colour
White text
12.38:1 — passes AA
Black text
1.70:1 — fails AA
White text is the better of the two at12.38:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#0018a8
protanopia
#1616a8 · ΔE00 1.1
deuteranopia
#1313a8 · ΔE00 1.4
tritanopia
#0f0fad · ΔE00 1.8
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isZaffre at ΔE00 0.746: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- ZaffreΔE00 0.746 · #0014a8
- Extravehicular ActivityΔE00 1.217 · #0011aa
- CobaltΔE00 2.244 · #030aa7
- City Hunter BlueΔE00 2.267 · #0022aa
- Too Dark TonightΔE00 2.366 · #0011bb
- Space ExplorationΔE00 2.426 · #001199
- Bright MidnightΔE00 2.646 · #011993
- RoyalΔE00 2.658 · #0c1793
- Traditional Royal BlueΔE00 2.848 · #0504aa
- Cadmium BlueΔE00 2.898 · #0a1195
- Space DustΔE00 3.003 · #002299
- Celestial IndigoΔE00 3.083 · #091f92
7 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.