#66BB31#66BB31

#66BB31 is a light, vivid yellow-green. Relative luminance 0.386; OKLCH L 71.2% C 0.189 H 136.1°. Best body text is #000000 at 8.72:1 contrast (WCAG AA passes).

Color values

HEX#66BB31
RGBrgb(102, 187, 49)
HSLhsl(97, 58%, 46%)
HSVhsv(97, 74%, 73%)
CMYKcmyk(45.5%, 0%, 73.8%, 26.7%)
CIE-LABlab(68.45, -48.84, 58.17)
CIE-LCHlch(68.45, 75.95, 130.02°)
OKLaboklab(71.17% -0.1359 0.1307)
OKLCHoklch(71.17% 0.189 136.1)
XYZxyz(23.8036, 38.5857, 9.0986)
Luminance0.3859 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66BB31 #8631BB
analogous
#ABBB31 #66BB31 #31BB41
triadic
#66BB31 #3166BB #BB3166
tetradic
#66BB31 #31ABBB #8631BB #BB4131
square
#66BB31 #31ABBB #8631BB #BB4131
split-complementary
#66BB31 #4131BB #BB31AB
monochromatic
#315A18 #4C8B24 #66BB31 #86D356 #A9E087

Accessibility & contrast

On white

2.41
#66BB31 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.72
#66BB31 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BB31
8.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66BB31#FFFFFF#000000##000000
##66BB311.002.418.728.72
#FFFFFF2.411.0021.0021.00
#0000008.7221.001.001.00
##0000008.7221.001.001.00

Color blindness preview

Protanopia (red-blind)
#C2AB16
Deuteranopia (green-blind)
#B6A43F
Tritanopia (blue-blind)
#62B4A0
Achromatopsia (no color)
#A7A7A7

Design tokens & code

CSS
--color: #66bb31;
/* rgb */ color: rgb(102, 187, 49);
/* oklch */ color: oklch(71.2% 0.189 136.1);
Tailwind
colors: {
  custom: {
    50: '#99d072',
    500: '#66bb31',
    950: '#000000',
  },
}
SCSS
$custom: #66bb31;
$custom-light: #99d072;
$custom-dark: #000000;
JSON
{
  "hex": "#66bb31",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 49
  },
  "hsl": {
    "h": 96.957,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.71171,
    "c": 0.18856,
    "h": 136.1
  },
  "luminance": 0.38587
}

Semantic roles & 50–950 ramp

primary
#66BB31
secondary
#AD7FC9
accent
#46E2A6
background
#F9FCF7
surface
#F2F9ED
border
#CCD2C8
text
#0F1408
muted
#7E827B

Preview Lab

Preview with #66BB31

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

Preview Lab → · Contrast checker → · Palette generator →

#66BB31 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva