#51C778#51C778

#51C778 is a light, vivid green. Relative luminance 0.440; OKLCH L 74.3% C 0.156 H 151.5°. Best body text is #000000 at 9.79:1 contrast (WCAG AA passes).

Color values

HEX	#51C778
RGB	rgb(81, 199, 120)
HSL	hsl(140, 51%, 55%)
HSV	hsv(140, 59%, 78%)
CMYK	cmyk(59.3%, 0%, 39.7%, 22%)
CIE-LAB	lab(72.19, -50.64, 29.89)
CIE-LCH	lch(72.19, 58.80, 149.44°)
OKLab	oklab(74.29% -0.137 0.0743)
OKLCH	oklch(74.29% 0.156 151.5)
XYZ	xyz(27.2049, 43.9496, 24.8151)
Luminance	0.4395 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C778 #C751A0

analogous

#65C751 #51C778 #51C7B3

triadic

#51C778 #7851C7 #C77851

tetradic

#51C778 #5165C7 #C751A0 #C7B351

square

#51C778 #5165C7 #C751A0 #C7B351

split-complementary

#51C778 #B351C7 #C75165

monochromatic

#267741 #35A65A #51C778 #7FD69C #AEE5C0

Accessibility & contrast

On white

2.14

#51C778 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.79

#51C778 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C778

9.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C778	#FFFFFF	#000000	##000000
##51C778	1.00	2.14	9.79	9.79
#FFFFFF	2.14	1.00	21.00	21.00
#000000	9.79	21.00	1.00	1.00
##000000	9.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C8B872

Deuteranopia (green-blind)

#B8AD7D

Tritanopia (blue-blind)

#2DC4B3

Achromatopsia (no color)

#B1B1B1

Design tokens & code

CSS

--color: #51c778;
/* rgb */ color: rgb(81, 199, 120);
/* oklch */ color: oklch(74.3% 0.156 151.5);

Tailwind

colors: {
  custom: {
    50: '#8cd9a0',
    500: '#51c778',
    950: '#000000',
  },
}

SCSS

$custom: #51c778;
$custom-light: #8cd9a0;
$custom-dark: #000000;

JSON

{
  "hex": "#51c778",
  "rgb": {
    "r": 81,
    "g": 199,
    "b": 120
  },
  "hsl": {
    "h": 139.831,
    "s": 51.304,
    "l": 54.902
  },
  "oklch": {
    "l": 0.74293,
    "c": 0.15589,
    "h": 151.5
  },
  "luminance": 0.43952
}

Semantic roles & 50–950 ramp

primary

#51C778

secondary

#D3A1C2

accent

#4DACDB

background

#F9FDF9

surface

#F1FAF2

border

#CBD3CC

text

#0D150E

muted

#7E837E

Preview Lab

Preview with #51C778

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

Preview Lab → · Contrast checker → · Palette generator →