#51C221#51C221

#51C221 is a light, highly saturated green. Relative luminance 0.404; OKLCH L 72.0% C 0.214 H 138.8°. Best body text is #000000 at 9.09:1 contrast (WCAG AA passes).

Color values

HEX#51C221
RGBrgb(81, 194, 33)
HSLhsl(102, 71%, 45%)
HSVhsv(102, 83%, 76%)
CMYKcmyk(58.2%, 0%, 83%, 23.9%)
CIE-LABlab(69.78, -58.36, 64.01)
CIE-LCHlch(69.78, 86.62, 132.35°)
OKLaboklab(72.03% -0.1611 0.1409)
OKLCHoklch(72.03% 0.214 138.8)
XYZxyz(22.9587, 40.4407, 8.0345)
Luminance0.4044 (WCAG relative)
Temperaturewarm
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51C221 #9221C2
analogous
#A2C221 #51C221 #21C242
triadic
#51C221 #2151C2 #C22151
tetradic
#51C221 #21A2C2 #9221C2 #C24221
square
#51C221 #21A2C2 #9221C2 #C24221
split-complementary
#51C221 #4221C2 #C221A2
monochromatic
#25590F #3B8E18 #51C221 #70DF41 #98E876

Accessibility & contrast

On white

2.31
#51C221 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.09
#51C221 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C221
9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51C221#FFFFFF#000000##000000
##51C2211.002.319.099.09
#FFFFFF2.311.0021.0021.00
#0000009.0921.001.001.00
##0000009.0921.001.001.00

Color blindness preview

Protanopia (red-blind)
#C8B000
Deuteranopia (green-blind)
#BAA736
Tritanopia (blue-blind)
#45BBA5
Achromatopsia (no color)
#AAAAAA

Design tokens & code

CSS
--color: #51c221;
/* rgb */ color: rgb(81, 194, 33);
/* oklch */ color: oklch(72.0% 0.214 138.8);
Tailwind
colors: {
  custom: {
    50: '#8fd56c',
    500: '#51c221',
    950: '#000000',
  },
}
SCSS
$custom: #51c221;
$custom-light: #8fd56c;
$custom-dark: #000000;
JSON
{
  "hex": "#51c221",
  "rgb": {
    "r": 81,
    "g": 194,
    "b": 33
  },
  "hsl": {
    "h": 102.112,
    "s": 70.925,
    "l": 44.51
  },
  "oklch": {
    "l": 0.72029,
    "c": 0.21403,
    "h": 138.8
  },
  "luminance": 0.40443
}

Semantic roles & 50–950 ramp

primary
#51C221
secondary
#B370CF
accent
#3AEEB8
background
#F9FDF6
surface
#F2FAEC
border
#CCD3C7
text
#0E1408
muted
#7E837A

Preview Lab

Preview with #51C221

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

Preview Lab → · Contrast checker → · Palette generator →

#51C221 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva