HueComb

Water

#d4f1f9

A cyan that is nearly neutral — the hue shows only against a true grey. It is very light — it works as a page background, not as text.

Hex

#d4f1f9

RGB

212, 241, 249

OKLCh

94.0% 0.032 216.2°

CIELAB (D50)

93.2, -8.6, -7.2

What is true of this colour, and of no other

  • 5 other named colours sit within ΔE00 2 of it.
  • It uses 70% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 8.8; on black, Lc -95.4. 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 11.9 and 12.9 and 15.0 — no red cone.

Text on this colour

White text

1.18:1 — fails AA

Black text

17.75:1 — passes AA

Black text is the better of the two at17.75:1. That is enough for body text.

As text on white, it needs to change

#617b82 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

#d4f1f9

protanopia

#eeeef9 · ΔE00 11.9

deuteranopia

#e9e9fa · ΔE00 12.9

tritanopia

#e3e3ff · ΔE00 15.0

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isFrostproof at ΔE00 1.213: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

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