Super Rare Jade

#14bab4

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

Hex

#14bab4

RGB

20, 186, 180

OKLCh

71.3% 0.120 190.6°

CIELAB (D50)

68.1, -40.6, -8.6

What is true of this colour, and of no other

4 other named colours sit within ΔE00 2 of it.
It uses 98% of the chroma sRGB can show at this lightness and hue — close enough to the boundary that a wider display would show it slightly more vividly.
As text on white it measures APCA Lc 46.9; on black, Lc -55.1. 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 25.3 and 27.1 and 35.4 — no red cone.

Text on this colour

White text

2.41:1 — fails AA

Black text

8.71:1 — passes AA

Black text is the better of the two at8.71:1. That is enough for body text.

As text on white, it needs to change

#008581 is the nearest colour of the same hue that passes AA on white, at 4.50:1. Only the lightness moved, and some saturation was given up to stay inside sRGB.

Try it against your own background

The same colour, with one cone missing

As you see it

#14bab4

protanopia

#b0b0b4 · ΔE00 25.3

deuteranopia

#a0a0b6 · ΔE00 27.1

tritanopia

#8a8aff · ΔE00 35.4

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isJade Gravel at ΔE00 0.367: below 1.0 — an ordinary observer cannot tell these apart, even side by side. What the numbers mean.

Jade GravelΔE00 0.367 · #0abab5
Caicos TurquoiseΔE00 1.698 · #26b7b5
Green GrappleΔE00 1.711 · #3db9b2
Message GreenΔE00 1.738 · #37b8af
SwaggerΔE00 2.018 · #19b6b5
Turquoise TopazΔE00 2.05 · #13bbaf
Magnetic MagicΔE00 2.054 · #3fbbb2
Glass Jar BlueΔE00 2.37 · #20b2aa
Arctic GreenΔE00 2.457 · #45bcb3
Tint of TurquoiseΔE00 2.651 · #41bfb5
Maximum Blue GreenΔE00 2.817 · #30bfbf
Laguna GreenΔE00 2.822 · #01b1af

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