Aegean Blue

#1b416f

A blue that is muted. It is dark — it carries white text and needs care with black.

Hex

#1b416f

RGB

27, 65, 111

OKLCh

37.3% 0.090 254.8°

CIELAB (D50)

26.7, -0.4, -31.2

What is true of this colour, and of no other

  • 7 other named colours sit within ΔE00 2 of it.
  • It uses 74% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 93.7; on black, Lc -8.8. 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 9.8 and 9.4 and 8.9 — no red cone.

Text on this colour

White text

10.33:1 — passes AA

Black text

2.03:1 — fails AA

White text is the better of the two at10.33:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#1b416f

protanopia

#3e3e6f · ΔE00 9.8

deuteranopia

#39396f · ΔE00 9.4

tritanopia

#323291 · ΔE00 8.9

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isAssault at ΔE00 0.834: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • AssaultΔE00 0.834 · #1c4374
  • Blue MosqueΔE00 1.04 · #21426b
  • Ashenvale NightsΔE00 1.202 · #104071
  • Fish Net BlueΔE00 1.208 · #1e446e
  • Cold CurrentΔE00 1.493 · #234272
  • Honourable BlueΔE00 1.819 · #164576
  • Inoffensive BlueΔE00 1.893 · #114477
  • Epic AdventureΔE00 2.004 · #0e426f
  • Theatre BlueΔE00 2.015 · #21467a
  • Pretty Twilight NightΔE00 2.099 · #254770
  • NightlifeΔE00 2.113 · #27426b
  • Twilight BlueΔE00 2.13 · #0a437a

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