Oceanic Motion
#1d5c83
A blue that is muted. It is mid — the hardest range to put text on, either colour struggles.
Hex
#1d5c83
RGB
29, 92, 131
OKLCh
45.4% 0.089 240.5°
CIELAB (D50)
36.6, -9.5, -28.1
What is true of this colour, and of no other
- 9 other named colours sit within ΔE00 2 of it.
- It uses 85% of the chroma sRGB can show at this lightness and hue — close enough to the boundary that a wider display would show it slightly more vividly.
- As text on white it measures APCA Lc 84.7; on black, Lc -17.3. 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 16.1 and 15.3 and 13.7 — no red cone.
Text on this colour
White text
7.21:1 — passes AA
Black text
2.91:1 — fails AA
White text is the better of the two at7.21:1. That is enough for body text.
The same colour, with one cone missing
As you see it
#1d5c83
protanopia
#575783 · ΔE00 16.1
deuteranopia
#505084 · ΔE00 15.3
tritanopia
#4545be · ΔE00 13.7
The twelve nearest named colours
Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isWhale’s Tale at ΔE00 1.022: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.
- Whale’s TaleΔE00 1.022 · #115a82
- Sapphire SparkleΔE00 1.433 · #135e84
- Suez CanalΔE00 1.556 · #235e80
- ImpulseΔE00 1.561 · #005b87
- Bahama BlueΔE00 1.574 · #25597f
- High ProfileΔE00 1.603 · #005a85
- Blue FlameΔE00 1.762 · #005e88
- Sea CaveΔE00 1.869 · #005986
- Mamala BayΔE00 1.872 · #005e8c
- PontoonΔE00 2.07 · #0c608e
- Ink BlotchΔE00 2.142 · #00608b
- Mykonos BlueΔE00 2.162 · #005780
11 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.