#66F99F#66F99F

#66F99F is a very light, vivid green. Relative luminance 0.731; OKLCH L 88.0% C 0.178 H 153.6°. Best body text is #000000 at 15.62:1 contrast (WCAG AA passes).

Color values

HEX#66F99F
RGBrgb(102, 249, 159)
HSLhsl(143, 92%, 69%)
HSVhsv(143, 59%, 98%)
CMYKcmyk(59%, 0%, 36.1%, 2.4%)
CIE-LABlab(88.48, -58.91, 31.73)
CIE-LCHlch(88.48, 66.91, 151.69°)
OKLaboklab(88.04% -0.1597 0.0794)
OKLCHoklch(88.04% 0.178 153.6)
XYZxyz(45.6095, 73.0749, 44.4955)
Luminance0.7308 (WCAG relative)
Temperatureneutral
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66F99F #F966C0
analogous
#77F966 #66F99F #66F9E8
triadic
#66F99F #9F66F9 #F99F66
tetradic
#66F99F #6677F9 #F966C0 #F9E866
square
#66F99F #6677F9 #F966C0 #F9E866
split-complementary
#66F99F #E866F9 #F96677
monochromatic
#09DC5B #2BF77A #66F99F #A1FBC4 #DCFEE9

Accessibility & contrast

On white

1.34
#66F99F on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

15.62
#66F99F on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66F99F
15.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66F99F#FFFFFF#000000##000000
##66F99F1.001.3415.6215.62
#FFFFFF1.341.0021.0021.00
#00000015.6221.001.001.00
##00000015.6221.001.001.00

Color blindness preview

Protanopia (red-blind)
#F9E699
Deuteranopia (green-blind)
#E5D9A5
Tritanopia (blue-blind)
#32F6E2
Achromatopsia (no color)
#DEDEDE

Design tokens & code

CSS
--color: #66f99f;
/* rgb */ color: rgb(102, 249, 159);
/* oklch */ color: oklch(88.0% 0.178 153.6);
Tailwind
colors: {
  custom: {
    50: '#9efcbc',
    500: '#66f99f',
    950: '#000000',
  },
}
SCSS
$custom: #66f99f;
$custom-light: #9efcbc;
$custom-dark: #000000;
JSON
{
  "hex": "#66f99f",
  "rgb": {
    "r": 102,
    "g": 249,
    "b": 159
  },
  "hsl": {
    "h": 143.265,
    "s": 92.453,
    "l": 68.824
  },
  "oklch": {
    "l": 0.88042,
    "c": 0.17834,
    "h": 153.6
  },
  "luminance": 0.73079
}

Semantic roles & 50–950 ramp

primary
#66F99F
secondary
#D33094
accent
#008DE6
background
#FCFFFD
surface
#F6FFF8
border
#D0D7D1
text
#101812
muted
#808682

Preview Lab

Preview with #66F99F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →

#66F99F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva