Storm Rising

#4d5a6b

A blue that is nearly neutral — the hue shows only against a true grey. It is mid — the hardest range to put text on, either colour struggles.

Hex

#4d5a6b

RGB

77, 90, 107

OKLCh

46.3% 0.032 255.2°

CIELAB (D50)

37.6, -2.0, -11.5

What is true of this colour, and of no other

  • 7 other named colours sit within ΔE00 2 of it.
  • It uses only 21% 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 84.3; on black, Lc -17.6. 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 6.9 and 7.3 and 10.6 — no red cone.

Text on this colour

White text

7.02:1 — passes AA

Black text

2.99:1 — fails AA

White text is the better of the two at7.02:1. That is enough for body text.

The same colour, with one cone missing

As you see it

#4d5a6b

protanopia

#59596b · ΔE00 6.9

deuteranopia

#56566b · ΔE00 7.3

tritanopia

#545484 · ΔE00 10.6

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isMidnight Sun at ΔE00 1.173: between 1 and 2 — a trained eye spots it when the two touch; nobody spots it across a room. What the numbers mean.

  • Midnight SunΔE00 1.173 · #4e5a6d
  • RainmakerΔE00 1.402 · #485769
  • PropertyΔE00 1.57 · #4b5667
  • Motor City BlueΔE00 1.612 · #495a6e
  • Bluster BlueΔE00 1.661 · #4a5a6f
  • Bering SeaΔE00 1.678 · #4b596e
  • HarbourΔE00 1.745 · #495867
  • Rogue BlueΔE00 2.055 · #4b5764
  • Da BluesΔE00 2.642 · #516172
  • Blue PlanetΔE00 2.725 · #545e6a
  • Vintage IndigoΔE00 2.835 · #505d74
  • InkjetΔE00 2.846 · #44556b

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