#66C031#66C031

#66C031 is a light, vivid yellow-green. Relative luminance 0.407; OKLCH L 72.4% C 0.195 H 136.5°. Best body text is #000000 at 9.15:1 contrast (WCAG AA passes).

Color values

HEX#66C031
RGBrgb(102, 192, 49)
HSLhsl(98, 59%, 47%)
HSVhsv(98, 74%, 75%)
CMYKcmyk(46.9%, 0%, 74.5%, 24.7%)
CIE-LABlab(70.00, -50.82, 59.69)
CIE-LCHlch(70.00, 78.39, 130.41°)
OKLaboklab(72.44% -0.1413 0.1339)
OKLCHoklch(72.44% 0.195 136.5)
XYZxyz(24.8828, 40.7442, 9.4584)
Luminance0.4075 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66C031 #8B31C0
analogous
#AEC031 #66C031 #31C043
triadic
#66C031 #3166C0 #C03166
tetradic
#66C031 #31AEC0 #8B31C0 #C04331
square
#66C031 #31AEC0 #8B31C0 #C04331
split-complementary
#66C031 #4331C0 #C031AE
monochromatic
#325E18 #4C8F25 #66C031 #87D559 #AAE18A

Accessibility & contrast

On white

2.30
#66C031 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.15
#66C031 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C031
9.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66C031#FFFFFF#000000##000000
##66C0311.002.309.159.15
#FFFFFF2.301.0021.0021.00
#0000009.1521.001.001.00
##0000009.1521.001.001.00

Color blindness preview

Protanopia (red-blind)
#C7B013
Deuteranopia (green-blind)
#BBA840
Tritanopia (blue-blind)
#62B9A5
Achromatopsia (no color)
#ABABAB

Design tokens & code

CSS
--color: #66c031;
/* rgb */ color: rgb(102, 192, 49);
/* oklch */ color: oklch(72.4% 0.195 136.5);
Tailwind
colors: {
  custom: {
    50: '#99d473',
    500: '#66c031',
    950: '#000000',
  },
}
SCSS
$custom: #66c031;
$custom-light: #99d473;
$custom-dark: #000000;
JSON
{
  "hex": "#66c031",
  "rgb": {
    "r": 102,
    "g": 192,
    "b": 49
  },
  "hsl": {
    "h": 97.762,
    "s": 59.336,
    "l": 47.255
  },
  "oklch": {
    "l": 0.72441,
    "c": 0.19461,
    "h": 136.5
  },
  "luminance": 0.40746
}

Semantic roles & 50–950 ramp

primary
#66C031
secondary
#B082CB
accent
#45E3A8
background
#F9FDF7
surface
#F2FAED
border
#CCD3C8
text
#0F1409
muted
#7E837B

Preview Lab

Preview with #66C031

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

Preview Lab → · Contrast checker → · Palette generator →

#66C031 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva