#66CC37#66CC37

#66CC37 is a light, highly saturated green. Relative luminance 0.463; OKLCH L 75.5% C 0.206 H 137.8°. Best body text is #000000 at 10.26:1 contrast (WCAG AA passes).

Color values

HEX#66CC37
RGBrgb(102, 204, 55)
HSLhsl(101, 59%, 51%)
HSVhsv(101, 73%, 80%)
CMYKcmyk(50%, 0%, 73%, 20%)
CIE-LABlab(73.73, -55.02, 61.32)
CIE-LCHlch(73.73, 82.39, 131.90°)
OKLaboklab(75.52% -0.1522 0.1381)
OKLCHoklch(75.52% 0.206 137.8)
XYZxyz(27.7610, 46.2843, 11.0846)
Luminance0.4629 (WCAG relative)
Temperaturewarm
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66CC37 #9D37CC
analogous
#B0CC37 #66CC37 #37CC52
triadic
#66CC37 #3766CC #CC3766
tetradic
#66CC37 #37B0CC #9D37CC #CC5237
square
#66CC37 #37B0CC #9D37CC #CC5237
split-complementary
#66CC37 #5237CC #CC37B0
monochromatic
#356D1C #4D9E28 #66CC37 #8BD868 #B1E599

Accessibility & contrast

On white

2.05
#66CC37 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.26
#66CC37 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CC37
10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66CC37#FFFFFF#000000##000000
##66CC371.002.0510.2610.26
#FFFFFF2.051.0021.0021.00
#00000010.2621.001.001.00
##00000010.2621.001.001.00

Color blindness preview

Protanopia (red-blind)
#D3BA1A
Deuteranopia (green-blind)
#C5B246
Tritanopia (blue-blind)
#5FC5AF
Achromatopsia (no color)
#B5B5B5

Design tokens & code

CSS
--color: #66cc37;
/* rgb */ color: rgb(102, 204, 55);
/* oklch */ color: oklch(75.5% 0.206 137.8);
Tailwind
colors: {
  custom: {
    50: '#9bdc77',
    500: '#66cc37',
    950: '#000000',
  },
}
SCSS
$custom: #66cc37;
$custom-light: #9bdc77;
$custom-dark: #000000;
JSON
{
  "hex": "#66cc37",
  "rgb": {
    "r": 102,
    "g": 204,
    "b": 55
  },
  "hsl": {
    "h": 101.074,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.75523,
    "c": 0.20553,
    "h": 137.8
  },
  "luminance": 0.46286
}

Semantic roles & 50–950 ramp

primary
#66CC37
secondary
#BC8ED0
accent
#45E3B1
background
#FAFDF7
surface
#F3FBEE
border
#CDD4C9
text
#0F1509
muted
#7F837B

Preview Lab

Preview with #66CC37

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

Preview Lab → · Contrast checker → · Palette generator →

#66CC37 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva