#51DB81#51DB81

#51DB81 is a light, vivid green. Relative luminance 0.540; OKLCH L 79.5% C 0.175 H 151.6°. Best body text is #000000 at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#51DB81
RGB	rgb(81, 219, 129)
HSL	hsl(141, 66%, 59%)
HSV	hsv(141, 63%, 86%)
CMYK	cmyk(63%, 0%, 41.1%, 14.1%)
CIE-LAB	lab(78.46, -56.85, 33.50)
CIE-LCH	lch(78.46, 65.98, 149.49°)
OKLab	oklab(79.49% -0.1536 0.083)
OKLCH	oklch(79.49% 0.175 151.6)
XYZ	xyz(32.6847, 53.9940, 29.4640)
Luminance	0.5400 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51DB81 #DB51AB

analogous

#66DB51 #51DB81 #51DBC6

triadic

#51DB81 #8151DB #DB8151

tetradic

#51DB81 #5166DB #DB51AB #DBC651

square

#51DB81 #5166DB #DB51AB #DBC651

split-complementary

#51DB81 #C651DB #DB5166

monochromatic

#1E9347 #29C660 #51DB81 #84E5A6 #B6F0CA

Accessibility & contrast

On white

1.78

#51DB81 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.80

#51DB81 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51DB81

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51DB81	#FFFFFF	#000000	##000000
##51DB81	1.00	1.78	11.80	11.80
#FFFFFF	1.78	1.00	21.00	21.00
#000000	11.80	21.00	1.00	1.00
##000000	11.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DCCA7B

Deuteranopia (green-blind)

#CABD87

Tritanopia (blue-blind)

#19D8C5

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #51db81;
/* rgb */ color: rgb(81, 219, 129);
/* oklch */ color: oklch(79.5% 0.175 151.6);

Tailwind

colors: {
  custom: {
    50: '#90e7a6',
    500: '#51db81',
    950: '#000000',
  },
}

SCSS

$custom: #51db81;
$custom-light: #90e7a6;
$custom-dark: #000000;

JSON

{
  "hex": "#51db81",
  "rgb": {
    "r": 81,
    "g": 219,
    "b": 129
  },
  "hsl": {
    "h": 140.87,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.79488,
    "c": 0.17455,
    "h": 151.6
  },
  "luminance": 0.53997
}

Semantic roles & 50–950 ramp

primary

#51DB81

secondary

#983877

accent

#3FAEE9

background

#FCFEFC

surface

#F5FDF6

border

#CFD5D0

text

#0E160F

muted

#7F8480

Preview Lab

Preview with #51DB81

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

Preview Lab → · Contrast checker → · Palette generator →