#51D991#51D991

#51D991 is a light, vivid green. Relative luminance 0.534; OKLCH L 79.3% C 0.157 H 156.6°. Best body text is #000000 at 11.68:1 contrast (WCAG AA passes).

Color values

HEX#51D991
RGBrgb(81, 217, 145)
HSLhsl(148, 64%, 58%)
HSVhsv(148, 63%, 85%)
CMYKcmyk(62.7%, 0%, 33.2%, 14.9%)
CIE-LABlab(78.12, -53.16, 24.83)
CIE-LCHlch(78.12, 58.67, 154.96°)
OKLaboklab(79.3% -0.1444 0.0626)
OKLCHoklch(79.3% 0.157 156.6)
XYZxyz(33.3141, 53.4159, 35.3372)
Luminance0.5342 (WCAG relative)
Temperatureneutral
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51D991 #D95199
analogous
#55D951 #51D991 #51D9D5
triadic
#51D991 #9151D9 #D99151
tetradic
#51D991 #5155D9 #D95199 #D9D551
square
#51D991 #5155D9 #D95199 #D9D551
split-complementary
#51D991 #D551D9 #D95155
monochromatic
#1F9054 #2AC272 #51D991 #83E4B1 #B5EFD1

Accessibility & contrast

On white

1.80
#51D991 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.68
#51D991 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D991
11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51D991#FFFFFF#000000##000000
##51D9911.001.8011.6811.68
#FFFFFF1.801.0021.0021.00
#00000011.6821.001.001.00
##00000011.6821.001.001.00

Color blindness preview

Protanopia (red-blind)
#D8C98C
Deuteranopia (green-blind)
#C6BC96
Tritanopia (blue-blind)
#00D7C6
Achromatopsia (no color)
#C1C1C1

Design tokens & code

CSS
--color: #51d991;
/* rgb */ color: rgb(81, 217, 145);
/* oklch */ color: oklch(79.3% 0.157 156.6);
Tailwind
colors: {
  custom: {
    50: '#8fe6b1',
    500: '#51d991',
    950: '#000000',
  },
}
SCSS
$custom: #51d991;
$custom-light: #8fe6b1;
$custom-dark: #000000;
JSON
{
  "hex": "#51d991",
  "rgb": {
    "r": 81,
    "g": 217,
    "b": 145
  },
  "hsl": {
    "h": 148.235,
    "s": 64.151,
    "l": 58.431
  },
  "oklch": {
    "l": 0.79298,
    "c": 0.15741,
    "h": 156.6
  },
  "luminance": 0.53419
}

Semantic roles & 50–950 ramp

primary
#51D991
secondary
#95396A
accent
#4199E7
background
#FCFEFD
surface
#F5FCF7
border
#CFD5D0
text
#0E1611
muted
#7F8481

Preview Lab

Preview with #51D991

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

Preview Lab → · Contrast checker → · Palette generator →

#51D991 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva