#51D778#51D778

#51D778 is a light, vivid green. Relative luminance 0.517; OKLCH L 78.3% C 0.177 H 149.8°. Best body text is #000000 at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#51D778
RGB	rgb(81, 215, 120)
HSL	hsl(137, 63%, 58%)
HSV	hsv(137, 62%, 84%)
CMYK	cmyk(62.3%, 0%, 44.2%, 15.7%)
CIE-LAB	lab(77.10, -56.83, 36.27)
CIE-LCH	lch(77.10, 67.42, 147.45°)
OKLab	oklab(78.33% -0.1534 0.0892)
OKLCH	oklch(78.33% 0.177 149.8)
XYZ	xyz(31.0816, 51.7032, 26.1074)
Luminance	0.5171 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D778 #D751B0

analogous

#6DD751 #51D778 #51D7BB

triadic

#51D778 #7851D7 #D77851

tetradic

#51D778 #516DD7 #D751B0 #D7BB51

square

#51D778 #516DD7 #D751B0 #D7BB51

split-complementary

#51D778 #BB51D7 #D7516D

monochromatic

#208D40 #2CBF57 #51D778 #83E29F #B5EEC5

Accessibility & contrast

On white

1.85

#51D778 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.34

#51D778 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D778

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D778	#FFFFFF	#000000	##000000
##51D778	1.00	1.85	11.34	11.34
#FFFFFF	1.85	1.00	21.00	21.00
#000000	11.34	21.00	1.00	1.00
##000000	11.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D8C671

Deuteranopia (green-blind)

#C7BA7E

Tritanopia (blue-blind)

#24D3C0

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #51d778;
/* rgb */ color: rgb(81, 215, 120);
/* oklch */ color: oklch(78.3% 0.177 149.8);

Tailwind

colors: {
  custom: {
    50: '#8fe4a0',
    500: '#51d778',
    950: '#000000',
  },
}

SCSS

$custom: #51d778;
$custom-light: #8fe4a0;
$custom-dark: #000000;

JSON

{
  "hex": "#51d778",
  "rgb": {
    "r": 81,
    "g": 215,
    "b": 120
  },
  "hsl": {
    "h": 137.463,
    "s": 62.617,
    "l": 58.039
  },
  "oklch": {
    "l": 0.78329,
    "c": 0.17747,
    "h": 149.8
  },
  "luminance": 0.51706
}

Semantic roles & 50–950 ramp

primary

#51D778

secondary

#933979

accent

#42B6E6

background

#FCFEFC

surface

#F5FCF5

border

#CFD5CF

text

#0E160F

muted

#7F8480

Preview Lab

Preview with #51D778

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

Preview Lab → · Contrast checker → · Palette generator →