Flood

#6677bb

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

Hex

#6677bb

RGB

102, 119, 187

OKLCh

58.5% 0.106 272.1°

CIELAB (D50)

50.9, 7.6, -38.4

What is true of this colour, and of no other

  • 3 other named colours sit within ΔE00 2 of it.
  • It uses 47% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 69.4; on black, Lc -32.3. 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.
  • 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

4.27:1 — large text only

Black text

4.92:1 — passes AA

Black text is the better of the two at4.92:1. That is enough for body text.

As text on white, it needs to change

#6273b7 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved.

Try it against your own background

The same colour, with one cone missing

As you see it

#6677bb

protanopia

#7575bb · ΔE00 4.6

deuteranopia

#7272bb · ΔE00 4.3

tritanopia

#6f6fd3 · ΔE00 4.3

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isUltramarine Blue at ΔE00 1.24: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

  • Ultramarine BlueΔE00 1.24 · #657abb
  • Wind StarΔE00 1.356 · #6875b7
  • Wild PansyΔE00 1.714 · #6373b4
  • Persian JewelΔE00 2.086 · #6a7dbc
  • King’s RobeΔE00 2.382 · #6274ab
  • Sudden SapphireΔE00 2.41 · #6376a9
  • Regal AzureΔE00 2.578 · #6a76af
  • Gladiola BlueΔE00 2.584 · #6370b6
  • MarvellousΔE00 2.902 · #6a7fb4
  • Midnight VioletΔE00 3.051 · #6a75ad
  • Indigo LightΔE00 3.1 · #5d76cb
  • Chetwode BlueΔE00 3.293 · #666fb4

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