#66D02C#66D02C

#66D02C is a light, highly saturated yellow-green. Relative luminance 0.481; OKLCH L 76.5% C 0.216 H 137.3°. Best body text is #000000 at 10.62:1 contrast (WCAG AA passes).

Color values

HEX#66D02C
RGBrgb(102, 208, 44)
HSLhsl(99, 65%, 49%)
HSVhsv(99, 79%, 82%)
CMYKcmyk(51%, 0%, 78.8%, 18.4%)
CIE-LABlab(74.90, -57.18, 65.98)
CIE-LCHlch(74.90, 87.31, 130.91°)
OKLaboklab(76.47% -0.1587 0.1463)
OKLCHoklch(76.47% 0.216 137.3)
XYZxyz(28.4891, 48.1163, 10.1685)
Luminance0.4812 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66D02C #962CD0
analogous
#B8D02C #66D02C #2CD044
triadic
#66D02C #2C66D0 #D02C66
tetradic
#66D02C #2CB8D0 #962CD0 #D0442C
square
#66D02C #2CB8D0 #962CD0 #D0442C
split-complementary
#66D02C #442CD0 #D02CB8
monochromatic
#346B17 #4D9D21 #66D02C #8ADD5D #AEE78F

Accessibility & contrast

On white

1.98
#66D02C on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.62
#66D02C on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D02C
10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66D02C#FFFFFF#000000##000000
##66D02C1.001.9810.6210.62
#FFFFFF1.981.0021.0021.00
#00000010.6221.001.001.00
##00000010.6221.001.001.00

Color blindness preview

Protanopia (red-blind)
#D7BE00
Deuteranopia (green-blind)
#C9B53F
Tritanopia (blue-blind)
#5FC8B2
Achromatopsia (no color)
#B8B8B8

Design tokens & code

CSS
--color: #66d02c;
/* rgb */ color: rgb(102, 208, 44);
/* oklch */ color: oklch(76.5% 0.216 137.3);
Tailwind
colors: {
  custom: {
    50: '#9cdf73',
    500: '#66d02c',
    950: '#000000',
  },
}
SCSS
$custom: #66d02c;
$custom-light: #9cdf73;
$custom-dark: #000000;
JSON
{
  "hex": "#66d02c",
  "rgb": {
    "r": 102,
    "g": 208,
    "b": 44
  },
  "hsl": {
    "h": 98.78,
    "s": 65.079,
    "l": 49.412
  },
  "oklch": {
    "l": 0.76465,
    "c": 0.21583,
    "h": 137.3
  },
  "luminance": 0.48118
}

Semantic roles & 50–950 ramp

primary
#66D02C
secondary
#B786D2
accent
#40E8AD
background
#FAFDF7
surface
#F4FBED
border
#CED4C8
text
#0F1509
muted
#7F837B

Preview Lab

Preview with #66D02C

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

Preview Lab → · Contrast checker → · Palette generator →

#66D02C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva