20000 Leagues Under the Sea
#191970
A blue that is muted. It is dark — it carries white text and needs care with black.
Hex
#191970
RGB
25, 25, 112
OKLCh
28.8% 0.144 272.8°
CIELAB (D50)
14.9, 26.0, -50.9
What is true of this colour, and of no other
- No other named colour in the set is within ΔE00 2 of it — it stands alone.
- It uses 78% of the chroma sRGB can show at this lightness and hue.
- As text on white it measures APCA Lc 101.0; 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
14.85:1 — passes AA
Black text
1.41:1 — fails AA
White text is the better of the two at14.85:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#191970
protanopia
#191970 · ΔE00 0.0
deuteranopia
#191970 · ΔE00 0.0
tritanopia
#191970 · ΔE00 0.0
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isDying Storm Blue at ΔE00 2.363: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.
- Dying Storm BlueΔE00 2.363 · #111166
- SnorlaxΔE00 2.506 · #222277
- Major TomΔE00 2.754 · #001177
- Blue RangerΔE00 2.838 · #00177d
- Blue RoyaleΔE00 2.847 · #29217a
- Atlantic DepthsΔE00 2.864 · #001166
- Outer RimΔE00 2.957 · #221177
- After Work BlueΔE00 3.326 · #24246d
- Intergalactic CowboyΔE00 3.499 · #222266
- Ocean AbyssΔE00 3.524 · #221166
- Impression of ObscurityΔE00 3.708 · #1a2578
- Underground StreamΔE00 3.793 · #120a65
10 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.