HueComb

Gecko’s Dream

#669900

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

Hex

#669900

RGB

102, 153, 0

OKLCh

62.3% 0.166 129.4°

CIELAB (D50)

57.8, -32.2, 59.1

What is true of this colour, and of no other

  • No other named colour in the set is within ΔE00 2 of it — it stands alone.
  • It sits exactly on the sRGB boundary: at this lightness and hue the gamut has nothing left, and a wider display would show a more colourful version of it.
  • As text on white it measures APCA Lc 61.6; on black, Lc -40.1. 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 11.8 and 11.5 and 54.3 — no red cone.

Text on this colour

White text

3.43:1 — large text only

Black text

6.12:1 — passes AA

Black text is the better of the two at6.12:1. That is enough for body text.

As text on white, it needs to change

#578300 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

#669900

protanopia

#949400 · ΔE00 11.8

deuteranopia

#8c8c0d · ΔE00 11.5

tritanopia

#8383c5 · ΔE00 54.3

Run a whole palette through all three

The twelve nearest named colours

Ranked by CIEDE2000 — perceptual distance, not hex arithmetic. The closest isLuminescent Green at ΔE00 2.851: between 2 and 5 — clearly two colours when compared, easily mistaken from memory. What the numbers mean.

  • Luminescent GreenΔE00 2.851 · #769c18
  • Elven OlympicsΔE00 2.861 · #6ca024
  • Green ThumbΔE00 3.512 · #779900
  • LimeadeΔE00 3.557 · #5f9727
  • Herbal LiftΔE00 3.975 · #6ba520
  • Support GreenΔE00 4.226 · #78a300
  • Thyme and SaltΔE00 4.31 · #629a31
  • SushiΔE00 4.322 · #7c9f2f
  • Pont MossΔE00 4.339 · #5f9228
  • Asparagus SultanΔE00 4.391 · #6a8e22
  • Mossy WoodsΔE00 4.401 · #7a9703
  • Carol’s PurrΔE00 4.409 · #77a135

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