#66B31E#66B31E

#66B31E is a light, vivid yellow-green. Relative luminance 0.352; OKLCH L 69.0% C 0.188 H 134.2°. Best body text is #000000 at 8.03:1 contrast (WCAG AA passes).

Color values

HEX#66B31E
RGBrgb(102, 179, 30)
HSLhsl(91, 71%, 41%)
HSVhsv(91, 83%, 70%)
CMYKcmyk(43%, 0%, 83.2%, 29.8%)
CIE-LABlab(65.87, -46.67, 61.56)
CIE-LCHlch(65.87, 77.25, 127.17°)
OKLaboklab(69.02% -0.1313 0.135)
OKLCHoklch(69.02% 0.188 134.2)
XYZxyz(21.8335, 35.1575, 6.8637)
Luminance0.3516 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B31E #6B1EB3
analogous
#B0B31E #66B31E #1EB321
triadic
#66B31E #1E66B3 #B31E66
tetradic
#66B31E #1EB0B3 #6B1EB3 #B3211E
square
#66B31E #1EB0B3 #6B1EB3 #B3211E
split-complementary
#66B31E #211EB3 #B31EB0
monochromatic
#2A4A0C #487F15 #66B31E #84DD32 #A4E566

Accessibility & contrast

On white

2.61
#66B31E on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.03
#66B31E on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B31E
8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B31E#FFFFFF#000000##000000
##66B31E1.002.618.038.03
#FFFFFF2.611.0021.0021.00
#0000008.0321.001.001.00
##0000008.0321.001.001.00

Color blindness preview

Protanopia (red-blind)
#BAA400
Deuteranopia (green-blind)
#B09E31
Tritanopia (blue-blind)
#65AC98
Achromatopsia (no color)
#A0A0A0

Design tokens & code

CSS
--color: #66b31e;
/* rgb */ color: rgb(102, 179, 30);
/* oklch */ color: oklch(69.0% 0.188 134.2);
Tailwind
colors: {
  custom: {
    50: '#99ca69',
    500: '#66b31e',
    950: '#000000',
  },
}
SCSS
$custom: #66b31e;
$custom-light: #99ca69;
$custom-dark: #000000;
JSON
{
  "hex": "#66b31e",
  "rgb": {
    "r": 102,
    "g": 179,
    "b": 30
  },
  "hsl": {
    "h": 91.007,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.69024,
    "c": 0.18829,
    "h": 134.2
  },
  "luminance": 0.35159
}

Semantic roles & 50–950 ramp

primary
#66B31E
secondary
#9862CB
accent
#3AEE97
background
#F9FCF6
surface
#F2F8EC
border
#CCD1C7
text
#0F1307
muted
#7E827A

Preview Lab

Preview with #66B31E

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

Preview Lab → · Contrast checker → · Palette generator →

#66B31E Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva