#66E544#66E544

#66E544 is a light, highly saturated green. Relative luminance 0.593; OKLCH L 81.9% C 0.227 H 139.8°. Best body text is #000000 at 12.86:1 contrast (WCAG AA passes).

Color values

HEX#66E544
RGBrgb(102, 229, 68)
HSLhsl(107, 76%, 58%)
HSVhsv(107, 70%, 90%)
CMYKcmyk(55.5%, 0%, 70.3%, 10.2%)
CIE-LABlab(81.44, -63.21, 64.51)
CIE-LCHlch(81.44, 90.32, 134.42°)
OKLaboklab(81.91% -0.1736 0.1465)
OKLCHoklch(81.91% 0.227 139.8)
XYZxyz(34.5407, 59.2778, 15.0893)
Luminance0.5928 (WCAG relative)
Temperatureneutral
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66E544 #C344E5
analogous
#B7E544 #66E544 #44E572
triadic
#66E544 #4466E5 #E54466
tetradic
#66E544 #44B7E5 #C344E5 #E57244
square
#66E544 #44B7E5 #C344E5 #E57244
split-complementary
#66E544 #7244E5 #E544B7
monochromatic
#319915 #42CF1D #66E544 #92EC7A #BEF4AF

Accessibility & contrast

On white

1.63
#66E544 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

12.86
#66E544 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E544
12.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66E544#FFFFFF#000000##000000
##66E5441.001.6312.8612.86
#FFFFFF1.631.0021.0021.00
#00000012.8621.001.001.00
##00000012.8621.001.001.00

Color blindness preview

Protanopia (red-blind)
#EBD129
Deuteranopia (green-blind)
#DBC654
Tritanopia (blue-blind)
#57DEC5
Achromatopsia (no color)
#CACACA

Design tokens & code

CSS
--color: #66e544;
/* rgb */ color: rgb(102, 229, 68);
/* oklch */ color: oklch(81.9% 0.227 139.8);
Tailwind
colors: {
  custom: {
    50: '#9eee81',
    500: '#66e544',
    950: '#000000',
  },
}
SCSS
$custom: #66e544;
$custom-light: #9eee81;
$custom-dark: #000000;
JSON
{
  "hex": "#66e544",
  "rgb": {
    "r": 102,
    "g": 229,
    "b": 68
  },
  "hsl": {
    "h": 107.329,
    "s": 75.587,
    "l": 58.235
  },
  "oklch": {
    "l": 0.81906,
    "c": 0.2271,
    "h": 139.8
  },
  "luminance": 0.59281
}

Semantic roles & 50–950 ramp

primary
#66E544
secondary
#86309D
accent
#36F2CA
background
#FCFFFB
surface
#F6FEF2
border
#D0D6CC
text
#10160B
muted
#80857E

Preview Lab

Preview with #66E544

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

Preview Lab → · Contrast checker → · Palette generator →

#66E544 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva