#51E478#51E478

#51E478 is a light, vivid green. Relative luminance 0.586; OKLCH L 81.6% C 0.194 H 148.8°. Best body text is #000000 at 12.72:1 contrast (WCAG AA passes).

Color values

HEX	#51E478
RGB	rgb(81, 228, 120)
HSL	hsl(136, 73%, 61%)
HSV	hsv(136, 64%, 89%)
CMYK	cmyk(64.5%, 0%, 47.4%, 10.6%)
CIE-LAB	lab(81.06, -61.63, 41.31)
CIE-LCH	lch(81.06, 74.20, 146.17°)
OKLab	oklab(81.59% -0.1662 0.1007)
OKLCH	oklch(81.59% 0.194 148.8)
XYZ	xyz(34.5243, 58.5886, 27.2549)
Luminance	0.5859 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E478 #E451BD

analogous

#74E451 #51E478 #51E4C1

triadic

#51E478 #7851E4 #E47851

tetradic

#51E478 #5174E4 #E451BD #E4C151

square

#51E478 #5174E4 #E451BD #E4C151

split-complementary

#51E478 #C151E4 #E45174

monochromatic

#19A23D #21D751 #51E478 #86ECA1 #BBF4CA

Accessibility & contrast

On white

1.65

#51E478 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.72

#51E478 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E478

12.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E478	#FFFFFF	#000000	##000000
##51E478	1.00	1.65	12.72	12.72
#FFFFFF	1.65	1.00	21.00	21.00
#000000	12.72	21.00	1.00	1.00
##000000	12.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E6D16F

Deuteranopia (green-blind)

#D4C480

Tritanopia (blue-blind)

#1AE0CA

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #51e478;
/* rgb */ color: rgb(81, 228, 120);
/* oklch */ color: oklch(81.6% 0.194 148.8);

Tailwind

colors: {
  custom: {
    50: '#91eea0',
    500: '#51e478',
    950: '#000000',
  },
}

SCSS

$custom: #51e478;
$custom-light: #91eea0;
$custom-dark: #000000;

JSON

{
  "hex": "#51e478",
  "rgb": {
    "r": 81,
    "g": 228,
    "b": 120
  },
  "hsl": {
    "h": 135.918,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.81593,
    "c": 0.19436,
    "h": 148.8
  },
  "luminance": 0.58592
}

Semantic roles & 50–950 ramp

primary

#51E478

secondary

#A43587

accent

#10A1D5

background

#FCFFFC

surface

#F5FEF5

border

#CFD6CF

text

#0E160F

muted

#7F8580

Preview Lab

Preview with #51E478

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

Preview Lab → · Contrast checker → · Palette generator →