#66C837#66C837

#66C837 is a light, highly saturated green. Relative luminance 0.444; OKLCH L 74.5% C 0.201 H 137.5°. Best body text is #000000 at 9.88:1 contrast (WCAG AA passes).

Color values

HEX#66C837
RGBrgb(102, 200, 55)
HSLhsl(101, 57%, 50%)
HSVhsv(101, 73%, 78%)
CMYKcmyk(49%, 0%, 72.5%, 21.6%)
CIE-LABlab(72.50, -53.50, 60.09)
CIE-LCHlch(72.50, 80.45, 131.68°)
OKLaboklab(74.51% -0.1481 0.1355)
OKLCHoklch(74.51% 0.201 137.5)
XYZxyz(26.8225, 44.4073, 10.7718)
Luminance0.4441 (WCAG relative)
Temperaturewarm
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66C837 #9937C8
analogous
#AEC837 #66C837 #37C851
triadic
#66C837 #3766C8 #C83766
tetradic
#66C837 #37AEC8 #9937C8 #C85137
square
#66C837 #37AEC8 #9937C8 #C85137
split-complementary
#66C837 #5137C8 #C837AE
monochromatic
#35681D #4E982A #66C837 #8BD567 #AFE297

Accessibility & contrast

On white

2.13
#66C837 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.88
#66C837 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C837
9.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66C837#FFFFFF#000000##000000
##66C8371.002.139.889.88
#FFFFFF2.131.0021.0021.00
#0000009.8821.001.001.00
##0000009.8821.001.001.00

Color blindness preview

Protanopia (red-blind)
#CEB71C
Deuteranopia (green-blind)
#C2AF45
Tritanopia (blue-blind)
#5FC1AC
Achromatopsia (no color)
#B2B2B2

Design tokens & code

CSS
--color: #66c837;
/* rgb */ color: rgb(102, 200, 55);
/* oklch */ color: oklch(74.5% 0.201 137.5);
Tailwind
colors: {
  custom: {
    50: '#9ad977',
    500: '#66c837',
    950: '#000000',
  },
}
SCSS
$custom: #66c837;
$custom-light: #9ad977;
$custom-dark: #000000;
JSON
{
  "hex": "#66c837",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 55
  },
  "hsl": {
    "h": 100.552,
    "s": 56.863,
    "l": 50
  },
  "oklch": {
    "l": 0.74511,
    "c": 0.20076,
    "h": 137.5
  },
  "luminance": 0.44409
}

Semantic roles & 50–950 ramp

primary
#66C837
secondary
#B98DCE
accent
#48E0AF
background
#FAFDF7
surface
#F3FBEE
border
#CDD4C9
text
#0F1509
muted
#7F837B

Preview Lab

Preview with #66C837

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

Preview Lab → · Contrast checker → · Palette generator →

#66C837 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva