#51B525#51B525

#51B525 is a light, vivid green. Relative luminance 0.349; OKLCH L 68.7% C 0.198 H 138.4°. Best body text is #000000 at 7.99:1 contrast (WCAG AA passes).

Color values

HEX#51B525
RGBrgb(81, 181, 37)
HSLhsl(102, 66%, 43%)
HSVhsv(102, 80%, 71%)
CMYKcmyk(55.2%, 0%, 79.6%, 29%)
CIE-LABlab(65.69, -53.50, 59.14)
CIE-LCHlch(65.69, 79.75, 132.13°)
OKLaboklab(68.66% -0.1478 0.1313)
OKLCHoklch(68.66% 0.198 138.4)
XYZxyz(20.2504, 34.9290, 7.4248)
Luminance0.3493 (WCAG relative)
Temperaturewarm
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51B525 #8925B5
analogous
#99B525 #51B525 #25B541
triadic
#51B525 #2551B5 #B52551
tetradic
#51B525 #2599B5 #8925B5 #B54125
square
#51B525 #2599B5 #8925B5 #B54125
split-complementary
#51B525 #4125B5 #B52599
monochromatic
#244F10 #3A821B #51B525 #6ED83F #94E272

Accessibility & contrast

On white

2.63
#51B525 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

7.99
#51B525 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B525
7.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51B525#FFFFFF#000000##000000
##51B5251.002.637.997.99
#FFFFFF2.631.0021.0021.00
#0000007.9921.001.001.00
##0000007.9921.001.001.00

Color blindness preview

Protanopia (red-blind)
#BBA500
Deuteranopia (green-blind)
#AE9C36
Tritanopia (blue-blind)
#48AF9B
Achromatopsia (no color)
#A0A0A0

Design tokens & code

CSS
--color: #51b525;
/* rgb */ color: rgb(81, 181, 37);
/* oklch */ color: oklch(68.7% 0.198 138.4);
Tailwind
colors: {
  custom: {
    50: '#8dcc6c',
    500: '#51b525',
    950: '#000000',
  },
}
SCSS
$custom: #51b525;
$custom-light: #8dcc6c;
$custom-dark: #000000;
JSON
{
  "hex": "#51b525",
  "rgb": {
    "r": 81,
    "g": 181,
    "b": 37
  },
  "hsl": {
    "h": 101.667,
    "s": 66.055,
    "l": 42.745
  },
  "oklch": {
    "l": 0.68657,
    "c": 0.19771,
    "h": 138.4
  },
  "luminance": 0.34931
}

Semantic roles & 50–950 ramp

primary
#51B525
secondary
#AD6DC9
accent
#3FE9B5
background
#F9FCF6
surface
#F1F9EC
border
#CBD2C7
text
#0D1307
muted
#7E827A

Preview Lab

Preview with #51B525

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

Preview Lab → · Contrast checker → · Palette generator →

#51B525 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva