#66EF59#66EF59

#66EF59 is a very light, highly saturated green. Relative luminance 0.653; OKLCH L 84.6% C 0.225 H 141.9°. Best body text is #000000 at 14.06:1 contrast (WCAG AA passes).

Color values

HEX#66EF59
RGBrgb(102, 239, 89)
HSLhsl(115, 82%, 64%)
HSVhsv(115, 63%, 94%)
CMYKcmyk(57.3%, 0%, 62.8%, 6.3%)
CIE-LABlab(84.63, -64.91, 59.73)
CIE-LCHlch(84.63, 88.21, 137.38°)
OKLaboklab(84.58% -0.177 0.1388)
OKLCHoklch(84.58% 0.225 141.9)
XYZxyz(38.1472, 65.2756, 20.0384)
Luminance0.6528 (WCAG relative)
Temperatureneutral
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#66EF59 #E259EF
analogous
#B1EF59 #66EF59 #59EF97
triadic
#66EF59 #5966EF #EF5966
tetradic
#66EF59 #59B1EF #E259EF #EF9759
square
#66EF59 #59B1EF #E259EF #EF9759
split-complementary
#66EF59 #9759EF #EF59B1
monochromatic
#21BC12 #33EA21 #66EF59 #99F491 #CDFAC9

Accessibility & contrast

On white

1.49
#66EF59 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

14.06
#66EF59 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66EF59
14.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##66EF59#FFFFFF#000000##000000
##66EF591.001.4914.0614.06
#FFFFFF1.491.0021.0021.00
#00000014.0621.001.001.00
##00000014.0621.001.001.00

Color blindness preview

Protanopia (red-blind)
#F4DA47
Deuteranopia (green-blind)
#E3CF66
Tritanopia (blue-blind)
#51E8D0
Achromatopsia (no color)
#D3D3D3

Design tokens & code

CSS
--color: #66ef59;
/* rgb */ color: rgb(102, 239, 89);
/* oklch */ color: oklch(84.6% 0.225 141.9);
Tailwind
colors: {
  custom: {
    50: '#9ef58d',
    500: '#66ef59',
    950: '#000000',
  },
}
SCSS
$custom: #66ef59;
$custom-light: #9ef58d;
$custom-dark: #000000;
JSON
{
  "hex": "#66ef59",
  "rgb": {
    "r": 102,
    "g": 239,
    "b": 89
  },
  "hsl": {
    "h": 114.8,
    "s": 82.418,
    "l": 64.314
  },
  "oklch": {
    "l": 0.84582,
    "c": 0.22491,
    "h": 141.9
  },
  "luminance": 0.65279
}

Semantic roles & 50–950 ramp

primary
#66EF59
secondary
#AE32BA
accent
#07DFCC
background
#FDFFFC
surface
#F7FFF4
border
#D0D7CE
text
#10170D
muted
#81857F

Preview Lab

Preview with #66EF59

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

Preview Lab → · Contrast checker → · Palette generator →

#66EF59 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva