Whale Shark

#607c8e

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

#607c8e

RGB

96, 124, 142

OKLCh

57.1% 0.043 236.7°

CIELAB (D50)

50.3, -7.0, -13.3

What is true of this colour, and of no other

  • 5 other named colours sit within ΔE00 2 of it.
  • It uses only 34% 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 70.5; on black, Lc -31.2. 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.
  • protanopia and deuteranopia and tritanopia shift it by ΔE00 12.5 and 13.2 and 11.4 — no red cone.

Text on this colour

White text

4.40:1 — large text only

Black text

4.77:1 — passes AA

Black text is the better of the two at4.77:1. That is enough for body text.

As text on white, it needs to change

#5e7a8c 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

#607c8e

protanopia

#79798e · ΔE00 12.5

deuteranopia

#75758e · ΔE00 13.2

tritanopia

#6f6fc0 · ΔE00 11.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isCanyon Blue at ΔE00 0.696: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • Canyon BlueΔE00 0.696 · #607b8e
  • Pier 17 SteelΔE00 1.032 · #647d8e
  • ProvidenceΔE00 1.302 · #5c7b8c
  • Provincial BlueΔE00 1.576 · #5e7b91
  • Titanium BlueΔE00 1.672 · #5b798e
  • Night OwlΔE00 2.154 · #5d7b89
  • Cascade TourΔE00 2.391 · #697f8e
  • Technical BlueΔE00 2.541 · #587c8d
  • Ocean ShadowΔE00 2.562 · #5b7886
  • Blue PrinceΔE00 2.658 · #6a808f
  • Windy SeasΔE00 2.7 · #667f8b
  • Tool BlueΔE00 2.701 · #637985

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