#51E55B#51E55B

#51E55B is a light, highly saturated green. Relative luminance 0.585; OKLCH L 81.5% C 0.220 H 144.2°. Best body text is #000000 at 12.71:1 contrast (WCAG AA passes).

Color values

HEX#51E55B
RGBrgb(81, 229, 91)
HSLhsl(124, 74%, 61%)
HSVhsv(124, 65%, 90%)
CMYKcmyk(64.6%, 0%, 60.3%, 10.2%)
CIE-LABlab(81.04, -65.79, 54.69)
CIE-LCHlch(81.04, 85.55, 140.26°)
OKLaboklab(81.46% -0.1782 0.1283)
OKLCHoklch(81.46% 0.22 144.2)
XYZxyz(33.2989, 58.5399, 19.4400)
Luminance0.5854 (WCAG relative)
Temperatureneutral
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51E55B #E551DB
analogous
#91E551 #51E55B #51E5A5
triadic
#51E55B #5B51E5 #E55B51
tetradic
#51E55B #5191E5 #E551DB #E5A551
square
#51E55B #5191E5 #E551DB #E5A551
split-complementary
#51E55B #A551E5 #E55191
monochromatic
#18A322 #20D82D #51E55B #86ED8D #BBF5BF

Accessibility & contrast

On white

1.65
#51E55B on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

12.71
#51E55B on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E55B
12.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51E55B#FFFFFF#000000##000000
##51E55B1.001.6512.7112.71
#FFFFFF1.651.0021.0021.00
#00000012.7121.001.001.00
##00000012.7121.001.001.00

Color blindness preview

Protanopia (red-blind)
#E9D14C
Deuteranopia (green-blind)
#D7C466
Tritanopia (blue-blind)
#2BDFC7
Achromatopsia (no color)
#C9C9C9

Design tokens & code

CSS
--color: #51e55b;
/* rgb */ color: rgb(81, 229, 91);
/* oklch */ color: oklch(81.5% 0.220 144.2);
Tailwind
colors: {
  custom: {
    50: '#92ee8e',
    500: '#51e55b',
    950: '#000000',
  },
}
SCSS
$custom: #51e55b;
$custom-light: #92ee8e;
$custom-dark: #000000;
JSON
{
  "hex": "#51e55b",
  "rgb": {
    "r": 81,
    "g": 229,
    "b": 91
  },
  "hsl": {
    "h": 124.054,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.81463,
    "c": 0.2196,
    "h": 144.2
  },
  "luminance": 0.58543
}

Semantic roles & 50–950 ramp

primary
#51E55B
secondary
#A6359E
accent
#0FC9D6
background
#FCFFFC
surface
#F5FEF4
border
#CFD6CE
text
#0E170D
muted
#7F857F

Preview Lab

Preview with #51E55B

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

Preview Lab → · Contrast checker → · Palette generator →

#51E55B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva