Dancing Sea

#1c4d8f

A blue that is muted. It is mid — the hardest range to put text on, either colour struggles.

Hex

#1c4d8f

RGB

28, 77, 143

OKLCh

42.5% 0.121 257.1°

CIELAB (D50)

32.4, 3.0, -42.1

What is true of this colour, and of no other

  • 18 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 uses 80% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 88.5; on black, Lc -13.7. 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 10.0 and 9.8 and 10.2 — no red cone.

Text on this colour

White text

8.37:1 — passes AA

Black text

2.51:1 — fails AA

White text is the better of the two at8.37:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#1c4d8f

protanopia

#49498f · ΔE00 10.0

deuteranopia

#43438f · ΔE00 9.8

tritanopia

#3b3bb5 · ΔE00 10.2

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isSweat Bee at ΔE00 0.329: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

9 of these have no page of their own: pages exist for the 4,961 colours the dataset marks as good names.