#66D02A#66D02A

#66D02A is a light, highly saturated yellow-green. Relative luminance 0.481; OKLCH L 76.5% C 0.217 H 137.2°. Best body text is #000000 at 10.62:1 contrast (WCAG AA passes).

Color values

HEX#66D02A
RGBrgb(102, 208, 42)
HSLhsl(98, 66%, 49%)
HSVhsv(98, 80%, 82%)
CMYKcmyk(51%, 0%, 79.8%, 18.4%)
CIE-LABlab(74.89, -57.29, 66.54)
CIE-LCHlch(74.89, 87.81, 130.73°)
OKLaboklab(76.46% -0.1591 0.1472)
OKLCHoklch(76.46% 0.217 137.2)
XYZxyz(28.4524, 48.1016, 9.9753)
Luminance0.4810 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66D02A #942AD0
analogous
#B9D02A #66D02A #2AD041
triadic
#66D02A #2A66D0 #D02A66
tetradic
#66D02A #2AB9D0 #942AD0 #D0412A
square
#66D02A #2AB9D0 #942AD0 #D0412A
split-complementary
#66D02A #412AD0 #D02AB9
monochromatic
#346A15 #4D9D20 #66D02A #89DE5A #AEE88D

Accessibility & contrast

On white

1.98
#66D02A on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.62
#66D02A on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D02A
10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66D02A#FFFFFF#000000##000000
##66D02A1.001.9810.6210.62
#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)
#C9B53E
Tritanopia (blue-blind)
#5FC8B2
Achromatopsia (no color)
#B8B8B8

Design tokens & code

CSS
--color: #66d02a;
/* rgb */ color: rgb(102, 208, 42);
/* oklch */ color: oklch(76.5% 0.217 137.2);
Tailwind
colors: {
  custom: {
    50: '#9cdf72',
    500: '#66d02a',
    950: '#000000',
  },
}
SCSS
$custom: #66d02a;
$custom-light: #9cdf72;
$custom-dark: #000000;
JSON
{
  "hex": "#66d02a",
  "rgb": {
    "r": 102,
    "g": 208,
    "b": 42
  },
  "hsl": {
    "h": 98.313,
    "s": 66.4,
    "l": 49.02
  },
  "oklch": {
    "l": 0.76455,
    "c": 0.21673,
    "h": 137.2
  },
  "luminance": 0.48104
}

Semantic roles & 50–950 ramp

primary
#66D02A
secondary
#B684D2
accent
#3EE9AC
background
#FAFDF7
surface
#F4FBED
border
#CED4C8
text
#0F1509
muted
#7F837B

Preview Lab

Preview with #66D02A

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

Preview Lab → · Contrast checker → · Palette generator →

#66D02A Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva