#66ED5B#66ED5B

#66ED5B is a very light, highly saturated green. Relative luminance 0.641; OKLCH L 84.1% C 0.221 H 142.1°. Best body text is #000000 at 13.83:1 contrast (WCAG AA passes).

Color values

HEX#66ED5B
RGBrgb(102, 237, 91)
HSLhsl(115, 80%, 64%)
HSVhsv(115, 62%, 93%)
CMYKcmyk(57%, 0%, 61.6%, 7.1%)
CIE-LABlab(84.04, -64.00, 58.24)
CIE-LCHlch(84.04, 86.54, 137.70°)
OKLaboklab(84.11% -0.1744 0.1358)
OKLCHoklch(84.11% 0.221 142.1)
XYZxyz(37.6501, 64.1451, 20.2927)
Luminance0.6415 (WCAG relative)
Temperatureneutral
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66ED5B #E25BED
analogous
#AFED5B #66ED5B #5BED99
triadic
#66ED5B #5B66ED #ED5B66
tetradic
#66ED5B #5BAFED #E25BED #ED995B
square
#66ED5B #5BAFED #E25BED #ED995B
split-complementary
#66ED5B #995BED #ED5BAF
monochromatic
#21B914 #33E724 #66ED5B #99F392 #CDF9C9

Accessibility & contrast

On white

1.52
#66ED5B on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

13.83
#66ED5B on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66ED5B
13.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66ED5B#FFFFFF#000000##000000
##66ED5B1.001.5213.8313.83
#FFFFFF1.521.0021.0021.00
#00000013.8321.001.001.00
##00000013.8321.001.001.00

Color blindness preview

Protanopia (red-blind)
#F2D94A
Deuteranopia (green-blind)
#E1CD67
Tritanopia (blue-blind)
#51E6CE
Achromatopsia (no color)
#D2D2D2

Design tokens & code

CSS
--color: #66ed5b;
/* rgb */ color: rgb(102, 237, 91);
/* oklch */ color: oklch(84.1% 0.221 142.1);
Tailwind
colors: {
  custom: {
    50: '#9ef48e',
    500: '#66ed5b',
    950: '#000000',
  },
}
SCSS
$custom: #66ed5b;
$custom-light: #9ef48e;
$custom-dark: #000000;
JSON
{
  "hex": "#66ed5b",
  "rgb": {
    "r": 102,
    "g": 237,
    "b": 91
  },
  "hsl": {
    "h": 115.479,
    "s": 80.22,
    "l": 64.314
  },
  "oklch": {
    "l": 0.84106,
    "c": 0.22106,
    "h": 142.1
  },
  "luminance": 0.64148
}

Semantic roles & 50–950 ramp

primary
#66ED5B
secondary
#AE34B8
accent
#09DDCD
background
#FCFFFC
surface
#F6FEF4
border
#D0D6CE
text
#10170D
muted
#80857F

Preview Lab

Preview with #66ED5B

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

Preview Lab → · Contrast checker → · Palette generator →

#66ED5B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva