#66B140#66B140

#66B140 is a light, vivid yellow-green. Relative luminance 0.346; OKLCH L 68.8% C 0.166 H 136.7°. Best body text is #000000 at 7.93:1 contrast (WCAG AA passes).

Color values

HEX#66B140
RGBrgb(102, 177, 64)
HSLhsl(100, 47%, 47%)
HSVhsv(100, 64%, 69%)
CMYKcmyk(42.4%, 0%, 63.8%, 30.6%)
CIE-LABlab(65.47, -43.56, 49.13)
CIE-LCHlch(65.47, 65.66, 131.57°)
OKLaboklab(68.76% -0.1206 0.1136)
OKLCHoklch(68.76% 0.166 136.7)
XYZxyz(22.1264, 34.6380, 10.3694)
Luminance0.3464 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66B140 #8B40B1
analogous
#9FB140 #66B140 #40B153
triadic
#66B140 #4066B1 #B14066
tetradic
#66B140 #409FB1 #8B40B1 #B15340
square
#66B140 #409FB1 #8B40B1 #B15340
split-complementary
#66B140 #5340B1 #B1409F
monochromatic
#32571F #4C8430 #66B140 #87C866 #AAD893

Accessibility & contrast

On white

2.65
#66B140 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.93
#66B140 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B140
7.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66B140#FFFFFF#000000##000000
##66B1401.002.657.937.93
#FFFFFF2.651.0021.0021.00
#0000007.9321.001.001.00
##0000007.9321.001.001.00

Color blindness preview

Protanopia (red-blind)
#B7A332
Deuteranopia (green-blind)
#AD9D49
Tritanopia (blue-blind)
#63AB99
Achromatopsia (no color)
#9F9F9F

Design tokens & code

CSS
--color: #66b140;
/* rgb */ color: rgb(102, 177, 64);
/* oklch */ color: oklch(68.8% 0.166 136.7);
Tailwind
colors: {
  custom: {
    50: '#97c97a',
    500: '#66b140',
    950: '#000000',
  },
}
SCSS
$custom: #66b140;
$custom-light: #97c97a;
$custom-dark: #000000;
JSON
{
  "hex": "#66b140",
  "rgb": {
    "r": 102,
    "g": 177,
    "b": 64
  },
  "hsl": {
    "h": 99.823,
    "s": 46.888,
    "l": 47.255
  },
  "oklch": {
    "l": 0.68761,
    "c": 0.16567,
    "h": 136.7
  },
  "luminance": 0.34639
}

Semantic roles & 50–950 ramp

primary
#66B140
secondary
#B089C3
accent
#51D7AA
background
#F9FCF7
surface
#F2F8EE
border
#CCD1C9
text
#0E1309
muted
#7E827B

Preview Lab

Preview with #66B140

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

Preview Lab → · Contrast checker → · Palette generator →

#66B140 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva