Acapulco Dive

#65a7dd

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

Hex

#65a7dd

RGB

101, 167, 221

OKLCh

70.6% 0.104 244.7°

CIELAB (D50)

65.7, -10.1, -34.4

What is true of this colour, and of no other

  • 5 other named colours sit within ΔE00 2 of it.
  • It uses 63% of the chroma sRGB can show at this lightness and hue.
  • As text on white it measures APCA Lc 50.4; on black, Lc -51.6. 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 16.5 and 15.7 and 14.4 — no red cone.

Text on this colour

White text

2.58:1 — fails AA

Black text

8.12:1 — passes AA

Black text is the better of the two at8.12:1. That is enough for body text.

As text on white, it needs to change

#3a7caf 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

#65a7dd

protanopia

#a1a1dd · ΔE00 16.5

deuteranopia

#9797de · ΔE00 15.7

tritanopia

#8b8bff · ΔE00 14.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isBaja Blue at ΔE00 0.622: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

  • Baja BlueΔE00 0.622 · #66a6d9
  • WindjammerΔE00 0.92 · #62a5df
  • Water SpiritΔE00 1.353 · #65a5d5
  • Ocean TropicΔE00 1.644 · #67a6d4
  • Blue GouramiΔE00 1.845 · #69a2d5
  • Polar IceΔE00 2.269 · #71a6d2
  • Blue JeansΔE00 2.409 · #5dadec
  • CeruleanΔE00 2.614 · #55aaee
  • Greek SeaΔE00 2.735 · #72a7e1
  • Chronus BlueΔE00 2.739 · #72a8d1
  • Picton BlueΔE00 2.841 · #5ba0d0
  • KindredΔE00 2.944 · #71a2d4

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