#51DD55#51DD55

#51DD55 is a light, highly saturated green. Relative luminance 0.541; OKLCH L 79.4% C 0.215 H 143.6°. Best body text is #000000 at 11.82:1 contrast (WCAG AA passes).

Color values

HEX	#51DD55
RGB	rgb(81, 221, 85)
HSL	hsl(122, 67%, 59%)
HSV	hsv(122, 63%, 87%)
CMYK	cmyk(63.3%, 0%, 61.5%, 13.3%)
CIE-LAB	lab(78.53, -63.69, 54.43)
CIE-LCH	lch(78.53, 83.78, 139.49°)
OKLab	oklab(79.37% -0.1728 0.1272)
OKLCH	oklch(79.37% 0.215 143.6)
XYZ	xyz(30.8877, 54.1150, 17.4100)
Luminance	0.5412 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51DD55 #DD51D9

analogous

#93DD51 #51DD55 #51DD9B

triadic

#51DD55 #5551DD #DD5551

tetradic

#51DD55 #5193DD #DD51D9 #DD9B51

square

#51DD55 #5193DD #DD51D9 #DD9B51

split-complementary

#51DD55 #9B51DD #DD5193

monochromatic

#1D9621 #27C92C #51DD55 #84E787 #B7F1B9

Accessibility & contrast

On white

1.78

#51DD55 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.82

#51DD55 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51DD55

11.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51DD55	#FFFFFF	#000000	##000000
##51DD55	1.00	1.78	11.82	11.82
#FFFFFF	1.78	1.00	21.00	21.00
#000000	11.82	21.00	1.00	1.00
##000000	11.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E1C946

Deuteranopia (green-blind)

#D0BE60

Tritanopia (blue-blind)

#32D7C0

Achromatopsia (no color)

#C2C2C2

Design tokens & code

CSS

--color: #51dd55;
/* rgb */ color: rgb(81, 221, 85);
/* oklch */ color: oklch(79.4% 0.215 143.6);

Tailwind

colors: {
  custom: {
    50: '#91e98a',
    500: '#51dd55',
    950: '#000000',
  },
}

SCSS

$custom: #51dd55;
$custom-light: #91e98a;
$custom-dark: #000000;

JSON

{
  "hex": "#51dd55",
  "rgb": {
    "r": 81,
    "g": 221,
    "b": 85
  },
  "hsl": {
    "h": 121.714,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.7937,
    "c": 0.21457,
    "h": 143.6
  },
  "luminance": 0.54118
}

Semantic roles & 50–950 ramp

primary

#51DD55

secondary

#9B3898

accent

#3EE5EA

background

#FCFEFC

surface

#F5FDF4

border

#CFD5CE

text

#0E160C

muted

#7F847F

Preview Lab

Preview with #51DD55

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

Preview Lab → · Contrast checker → · Palette generator →