#51D581#51D581

#51D581 is a light, vivid green. Relative luminance 0.509; OKLCH L 78.0% C 0.167 H 152.3°. Best body text is #000000 at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#51D581
RGB	rgb(81, 213, 129)
HSL	hsl(142, 61%, 58%)
HSV	hsv(142, 62%, 84%)
CMYK	cmyk(62%, 0%, 39.4%, 16.5%)
CIE-LAB	lab(76.63, -54.55, 31.10)
CIE-LCH	lch(76.63, 62.79, 150.31°)
OKLab	oklab(77.99% -0.1475 0.0774)
OKLCH	oklch(77.99% 0.167 152.3)
XYZ	xyz(31.1475, 50.9197, 28.9516)
Luminance	0.5092 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D581 #D551A5

analogous

#63D551 #51D581 #51D5C3

triadic

#51D581 #8151D5 #D58151

tetradic

#51D581 #5163D5 #D551A5 #D5C351

square

#51D581 #5163D5 #D551A5 #D5C351

split-complementary

#51D581 #C351D5 #D55163

monochromatic

#218A47 #2DBC61 #51D581 #82E1A5 #B4EDC8

Accessibility & contrast

On white

1.88

#51D581 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.18

#51D581 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D581

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D581	#FFFFFF	#000000	##000000
##51D581	1.00	1.88	11.18	11.18
#FFFFFF	1.88	1.00	21.00	21.00
#000000	11.18	21.00	1.00	1.00
##000000	11.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D5C47B

Deuteranopia (green-blind)

#C4B886

Tritanopia (blue-blind)

#1ED2C0

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #51d581;
/* rgb */ color: rgb(81, 213, 129);
/* oklch */ color: oklch(78.0% 0.167 152.3);

Tailwind

colors: {
  custom: {
    50: '#8fe3a6',
    500: '#51d581',
    950: '#000000',
  },
}

SCSS

$custom: #51d581;
$custom-light: #8fe3a6;
$custom-dark: #000000;

JSON

{
  "hex": "#51d581",
  "rgb": {
    "r": 81,
    "g": 213,
    "b": 129
  },
  "hsl": {
    "h": 141.818,
    "s": 61.111,
    "l": 57.647
  },
  "oklch": {
    "l": 0.77985,
    "c": 0.16656,
    "h": 152.3
  },
  "luminance": 0.50923
}

Semantic roles & 50–950 ramp

primary

#51D581

secondary

#903A71

accent

#44AAE4

background

#FCFEFC

surface

#F5FCF6

border

#CFD5D0

text

#0D150F

muted

#7F8480

Preview Lab

Preview with #51D581

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

Preview Lab → · Contrast checker → · Palette generator →