#51D978#51D978

#51D978 is a light, vivid green. Relative luminance 0.527; OKLCH L 78.8% C 0.180 H 149.7°. Best body text is #000000 at 11.55:1 contrast (WCAG AA passes).

Color values

HEX	#51D978
RGB	rgb(81, 217, 120)
HSL	hsl(137, 64%, 58%)
HSV	hsv(137, 63%, 85%)
CMYK	cmyk(62.7%, 0%, 44.7%, 14.9%)
CIE-LAB	lab(77.71, -57.58, 37.06)
CIE-LCH	lch(77.71, 68.47, 147.24°)
OKLab	oklab(78.83% -0.1554 0.091)
OKLCH	oklch(78.83% 0.18 149.7)
XYZ	xyz(31.5940, 52.7279, 26.2782)
Luminance	0.5273 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D978 #D951B2

analogous

#6ED951 #51D978 #51D9BC

triadic

#51D978 #7851D9 #D97851

tetradic

#51D978 #516ED9 #D951B2 #D9BC51

square

#51D978 #516ED9 #D951B2 #D9BC51

split-complementary

#51D978 #BC51D9 #D9516E

monochromatic

#1F9040 #2AC256 #51D978 #83E49F #B5EFC6

Accessibility & contrast

On white

1.82

#51D978 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.55

#51D978 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D978

11.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D978	#FFFFFF	#000000	##000000
##51D978	1.00	1.82	11.55	11.55
#FFFFFF	1.82	1.00	21.00	21.00
#000000	11.55	21.00	1.00	1.00
##000000	11.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DAC771

Deuteranopia (green-blind)

#C9BB7F

Tritanopia (blue-blind)

#23D5C2

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #51d978;
/* rgb */ color: rgb(81, 217, 120);
/* oklch */ color: oklch(78.8% 0.180 149.7);

Tailwind

colors: {
  custom: {
    50: '#8fe6a0',
    500: '#51d978',
    950: '#000000',
  },
}

SCSS

$custom: #51d978;
$custom-light: #8fe6a0;
$custom-dark: #000000;

JSON

{
  "hex": "#51d978",
  "rgb": {
    "r": 81,
    "g": 217,
    "b": 120
  },
  "hsl": {
    "h": 137.206,
    "s": 64.151,
    "l": 58.431
  },
  "oklch": {
    "l": 0.78832,
    "c": 0.18011,
    "h": 149.7
  },
  "luminance": 0.52731
}

Semantic roles & 50–950 ramp

primary

#51D978

secondary

#95397B

accent

#41B7E7

background

#FCFEFC

surface

#F5FCF5

border

#CFD5CF

text

#0E160F

muted

#7F8480

Preview Lab

Preview with #51D978

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

Preview Lab → · Contrast checker → · Palette generator →