#51E551#51E551

#51E551 is a light, highly saturated green. Relative luminance 0.584; OKLCH L 81.4% C 0.227 H 143.1°. Best body text is #000000 at 12.68:1 contrast (WCAG AA passes).

Color values

HEX#51E551
RGBrgb(81, 229, 81)
HSLhsl(120, 74%, 61%)
HSVhsv(120, 65%, 90%)
CMYKcmyk(64.6%, 0%, 64.6%, 10.2%)
CIE-LABlab(80.95, -66.83, 58.79)
CIE-LCHlch(80.95, 89.01, 138.66°)
OKLaboklab(81.36% -0.1815 0.1361)
OKLCHoklch(81.36% 0.227 143.1)
XYZxyz(32.8959, 58.3787, 17.3176)
Luminance0.5838 (WCAG relative)
Temperatureneutral
Familygreen

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51E551 #E551E5
analogous
#9BE551 #51E551 #51E59B
triadic
#51E551 #5151E5 #E55151
tetradic
#51E551 #519BE5 #E551E5 #E59B51
square
#51E551 #519BE5 #E551E5 #E59B51
split-complementary
#51E551 #9B51E5 #E5519B
monochromatic
#18A318 #20D820 #51E551 #86ED86 #BBF5BB

Accessibility & contrast

On white

1.66
#51E551 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

12.68
#51E551 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E551
12.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51E551#FFFFFF#000000##000000
##51E5511.001.6612.6812.68
#FFFFFF1.661.0021.0021.00
#00000012.6821.001.001.00
##00000012.6821.001.001.00

Color blindness preview

Protanopia (red-blind)
#EAD03E
Deuteranopia (green-blind)
#D8C45E
Tritanopia (blue-blind)
#2FDFC6
Achromatopsia (no color)
#C9C9C9

Design tokens & code

CSS
--color: #51e551;
/* rgb */ color: rgb(81, 229, 81);
/* oklch */ color: oklch(81.4% 0.227 143.1);
Tailwind
colors: {
  custom: {
    50: '#93ee88',
    500: '#51e551',
    950: '#000000',
  },
}
SCSS
$custom: #51e551;
$custom-light: #93ee88;
$custom-dark: #000000;
JSON
{
  "hex": "#51e551",
  "rgb": {
    "r": 81,
    "g": 229,
    "b": 81
  },
  "hsl": {
    "h": 120,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.81361,
    "c": 0.22685,
    "h": 143.1
  },
  "luminance": 0.58382
}

Semantic roles & 50–950 ramp

primary
#51E551
secondary
#A635A6
accent
#0FD6D6
background
#FCFFFC
surface
#F5FEF4
border
#CFD6CE
text
#0E170C
muted
#7F857F

Preview Lab

Preview with #51E551

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

Preview Lab → · Contrast checker → · Palette generator →

#51E551 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva