Windsurfing

#3a7099

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

Hex

#3a7099

RGB

58, 112, 153

OKLCh

52.6% 0.087 243.4°

CIELAB (D50)

44.9, -8.6, -28.2

What is true of this colour, and of no other

  • 6 other named colours sit within ΔE00 2 of it.
  • It uses 68% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 76.2; on black, Lc -25.5. 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 15.3 and 14.4 and 12.4 — no red cone.

Text on this colour

White text

5.31:1 — passes AA

Black text

3.96:1 — large text only

White text is the better of the two at5.31:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#3a7099

protanopia

#6c6c99 · ΔE00 15.3

deuteranopia

#64649a · ΔE00 14.4

tritanopia

#5a5ad7 · ΔE00 12.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isPhenomenon at ΔE00 0.878: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • PhenomenonΔE00 0.878 · #3e729b
  • Vallarta BlueΔE00 0.893 · #35709d
  • National AnthemΔE00 1.071 · #3f6f98
  • Muted BlueΔE00 1.326 · #3b719f
  • NavalΔE00 1.897 · #41729f
  • LochmaraΔE00 1.964 · #316ea0
  • Rainy LakeΔE00 2.082 · #3f6c8f
  • Deep WaterΔE00 2.093 · #2a6fa1
  • Decoration BlueΔE00 2.273 · #3f74a3
  • Postwar BoomΔE00 2.357 · #466f97
  • Big Sur Blue JadeΔE00 2.392 · #3f6e8e
  • Dull BlueΔE00 2.757 · #49759c

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