Everlasting Night
#000099
A blue that is saturated. It is dark — it carries white text and needs care with black.
Hex
#000099
RGB
0, 0, 153
OKLCh
30.9% 0.214 264.1°
CIELAB (D50)
15.1, 46.6, -76.5
What is true of this colour, and of no other
- 3 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 98.6; 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
14.38:1 — passes AA
Black text
1.46:1 — fails AA
White text is the better of the two at14.38:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#000099
protanopia
#000099 · ΔE00 0.0
deuteranopia
#000099 · ΔE00 0.0
tritanopia
#000099 · ΔE00 0.0
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDuke Blue at ΔE00 0.389: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.
- Duke BlueΔE00 0.389 · #00009c
- Blue TrustΔE00 1.717 · #120a8f
- Yves Klein BlueΔE00 1.848 · #00008b
- Blue BeetleΔE00 2.062 · #220099
- Bohemian BlueΔE00 2.175 · #0000aa
- Midnight in TokyoΔE00 2.251 · #000088
- Cadmium BlueΔE00 2.342 · #0a1195
- GroundwaterΔE00 2.377 · #1100aa
- Traditional Royal BlueΔE00 2.396 · #0504aa
- Dramatic BlueΔE00 2.433 · #240093
- Space ExplorationΔE00 2.434 · #001199
- CobaltΔE00 2.444 · #030aa7
7 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.