#66E03B#66E03B

#66E03B is a light, highly saturated green. Relative luminance 0.565; OKLCH L 80.6% C 0.227 H 139.0°. Best body text is #000000 at 12.29:1 contrast (WCAG AA passes).

Color values

HEX#66E03B
RGBrgb(102, 224, 59)
HSLhsl(104, 73%, 55%)
HSVhsv(104, 74%, 88%)
CMYKcmyk(54.5%, 0%, 73.7%, 12.2%)
CIE-LABlab(79.87, -62.08, 66.06)
CIE-LCHlch(79.87, 90.65, 133.22°)
OKLaboklab(80.59% -0.171 0.1485)
OKLCHoklch(80.59% 0.227 139)
XYZxyz(32.9233, 56.4492, 13.2977)
Luminance0.5645 (WCAG relative)
Temperaturewarm
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66E03B #B53BE0
analogous
#B8E03B #66E03B #3BE063
triadic
#66E03B #3B66E0 #E03B66
tetradic
#66E03B #3BB8E0 #B53BE0 #E0633B
square
#66E03B #3BB8E0 #B53BE0 #E0633B
split-complementary
#66E03B #633BE0 #E03BB8
monochromatic
#348B16 #48C01E #66E03B #8FE870 #B8F1A5

Accessibility & contrast

On white

1.71
#66E03B on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

12.29
#66E03B on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E03B
12.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66E03B#FFFFFF#000000##000000
##66E03B1.001.7112.2912.29
#FFFFFF1.711.0021.0021.00
#00000012.2921.001.001.00
##00000012.2921.001.001.00

Color blindness preview

Protanopia (red-blind)
#E7CC19
Deuteranopia (green-blind)
#D7C24C
Tritanopia (blue-blind)
#5AD8C0
Achromatopsia (no color)
#C6C6C6

Design tokens & code

CSS
--color: #66e03b;
/* rgb */ color: rgb(102, 224, 59);
/* oklch */ color: oklch(80.6% 0.227 139.0);
Tailwind
colors: {
  custom: {
    50: '#9deb7c',
    500: '#66e03b',
    950: '#000000',
  },
}
SCSS
$custom: #66e03b;
$custom-light: #9deb7c;
$custom-dark: #000000;
JSON
{
  "hex": "#66e03b",
  "rgb": {
    "r": 102,
    "g": 224,
    "b": 59
  },
  "hsl": {
    "h": 104.364,
    "s": 72.687,
    "l": 55.49
  },
  "oklch": {
    "l": 0.80588,
    "c": 0.22652,
    "h": 139
  },
  "luminance": 0.56452
}

Semantic roles & 50–950 ramp

primary
#66E03B
secondary
#772F90
accent
#38EFC0
background
#FCFEFB
surface
#F6FDF2
border
#D0D5CC
text
#10160A
muted
#80847D

Preview Lab

Preview with #66E03B

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

Preview Lab → · Contrast checker → · Palette generator →

#66E03B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva