#51E187#51E187

#51E187 is a light, vivid green. Relative luminance 0.573; OKLCH L 81.1% C 0.177 H 152.4°. Best body text is #000000 at 12.47:1 contrast (WCAG AA passes).

Color values

HEX	#51E187
RGB	rgb(81, 225, 135)
HSL	hsl(143, 71%, 60%)
HSV	hsv(143, 64%, 88%)
CMYK	cmyk(64%, 0%, 40%, 11.8%)
CIE-LAB	lab(80.37, -58.09, 32.97)
CIE-LCH	lch(80.37, 66.79, 150.42°)
OKLab	oklab(81.1% -0.1569 0.0819)
OKLCH	oklch(81.1% 0.177 152.4)
XYZ	xyz(34.6889, 57.3454, 32.1576)
Luminance	0.5735 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E187 #E151AB

analogous

#63E151 #51E187 #51E1CF

triadic

#51E187 #8751E1 #E18751

tetradic

#51E187 #5163E1 #E151AB #E1CF51

square

#51E187 #5163E1 #E151AB #E1CF51

split-complementary

#51E187 #CF51E1 #E15163

monochromatic

#1B9D4C #24D165 #51E187 #85EAAB #B9F3CF

Accessibility & contrast

On white

1.68

#51E187 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.47

#51E187 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E187

12.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E187	#FFFFFF	#000000	##000000
##51E187	1.00	1.68	12.47	12.47
#FFFFFF	1.68	1.00	21.00	21.00
#000000	12.47	21.00	1.00	1.00
##000000	12.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E1CF81

Deuteranopia (green-blind)

#CFC28D

Tritanopia (blue-blind)

#07DECB

Achromatopsia (no color)

#C7C7C7

Design tokens & code

CSS

--color: #51e187;
/* rgb */ color: rgb(81, 225, 135);
/* oklch */ color: oklch(81.1% 0.177 152.4);

Tailwind

colors: {
  custom: {
    50: '#91ebab',
    500: '#51e187',
    950: '#000000',
  },
}

SCSS

$custom: #51e187;
$custom-light: #91ebab;
$custom-dark: #000000;

JSON

{
  "hex": "#51e187",
  "rgb": {
    "r": 81,
    "g": 225,
    "b": 135
  },
  "hsl": {
    "h": 142.5,
    "s": 70.588,
    "l": 60
  },
  "oklch": {
    "l": 0.81095,
    "c": 0.17701,
    "h": 152.4
  },
  "luminance": 0.57349
}

Semantic roles & 50–950 ramp

primary

#51E187

secondary

#A03678

accent

#3AAAED

background

#FCFFFD

surface

#F5FEF7

border

#CFD6D0

text

#0E1610

muted

#7F8581

Preview Lab

Preview with #51E187

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

Preview Lab → · Contrast checker → · Palette generator →