Galactic Gossamer

#7f8cb8

A blue that is nearly neutral — the hue shows only against a true grey. It is light — black text sits on it comfortably, white text does not.

Hex

#7f8cb8

RGB

127, 140, 184

OKLCh

64.6% 0.068 271.7°

CIELAB (D50)

58.4, 3.0, -24.8

What is true of this colour, and of no other

  • 4 other named colours sit within ΔE00 2 of it.
  • It uses only 36% of the chroma available at this lightness and hue — there is a far more vivid version of this colour inside sRGB.
  • As text on white it measures APCA Lc 60.5; on black, Lc -41.2. 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

3.31:1 — large text only

Black text

6.35:1 — passes AA

Black text is the better of the two at6.35:1. That is enough for body text.

As text on white, it needs to change

#6975a0 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

#7f8cb8

protanopia

#8b8bb8 · ΔE00 4.6

deuteranopia

#8888b8 · ΔE00 4.3

tritanopia

#8686d0 · ΔE00 4.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isIolite at ΔE00 1.365: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

  • IoliteΔE00 1.365 · #7d89bb
  • Skysail BlueΔE00 1.448 · #818db3
  • Wild Blue YonderΔE00 1.475 · #7a89b8
  • Opal VioletΔE00 1.554 · #7e8fbb
  • LuxuryΔE00 2.157 · #818eb1
  • Safflowerish SkyΔE00 2.158 · #8491c3
  • Larkspur BouquetΔE00 2.213 · #798bbd
  • SoothsayerΔE00 2.394 · #8092bc
  • Pleated MauveΔE00 2.412 · #858bc2
  • PHP PurpleΔE00 2.466 · #8892bf
  • Sweet WilliamΔE00 2.519 · #8892c1
  • Corsican PurpleΔE00 2.542 · #7a85af

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