Wondrous Wisteria

#a3b1f2

A blue that is muted. It is light — black text sits on it comfortably, white text does not.

Hex

#a3b1f2

RGB

163, 177, 242

OKLCh

77.3% 0.095 274.6°

CIELAB (D50)

72.9, 6.3, -34.4

What is true of this colour, and of no other

  • No other named colour in the set is within ΔE00 2 of it — it stands alone.
  • It uses 82% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 40.5; on black, Lc -61.8. 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.
  • 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

2.07:1 — fails AA

Black text

10.13:1 — passes AA

Black text is the better of the two at10.13:1. That is enough for body text.

As text on white, it needs to change

#6773b0 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

#a3b1f2

protanopia

#afaff2 · ΔE00 4.0

deuteranopia

#adadf2 · ΔE00 3.7

tritanopia

#aaaaff · ΔE00 3.1

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isShy Moment at ΔE00 3.162: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.

  • Shy MomentΔE00 3.162 · #aaaaff
  • Myrtle FlowerΔE00 3.207 · #9eb3de
  • WidowmakerΔE00 3.419 · #99aaff
  • PeranoΔE00 3.565 · #acb9e8
  • Aster Flower BlueΔE00 3.591 · #9bacd8
  • Blue Skies TodayΔE00 4.024 · #95afdc
  • Teclis BlueΔE00 4.042 · #a3bae3
  • Sky BlueΔE00 4.373 · #9fb9e2
  • Victory LakeΔE00 4.408 · #92abd8
  • Greyish LavenderΔE00 4.469 · #b8b8ff
  • Cold LipsΔE00 4.489 · #9ba0ef
  • Dalmatian SageΔE00 4.514 · #97a3da

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