#51D591#51D591

#51D591 is a light, vivid green. Relative luminance 0.514; OKLCH L 78.3% C 0.152 H 157.3°. Best body text is #000000 at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#51D591
RGB	rgb(81, 213, 145)
HSL	hsl(149, 61%, 58%)
HSV	hsv(149, 62%, 84%)
CMYK	cmyk(62%, 0%, 31.9%, 16.5%)
CIE-LAB	lab(76.91, -51.56, 23.19)
CIE-LCH	lch(76.91, 56.54, 155.79°)
OKLab	oklab(78.3% -0.1403 0.0586)
OKLCH	oklch(78.3% 0.152 157.3)
XYZ	xyz(32.2955, 51.3789, 34.9977)
Luminance	0.5138 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D591 #D55195

analogous

#53D551 #51D591 #51D5D3

triadic

#51D591 #9151D5 #D59151

tetradic

#51D591 #5153D5 #D55195 #D5D351

square

#51D591 #5153D5 #D55195 #D5D351

split-complementary

#51D591 #D351D5 #D55153

monochromatic

#218A54 #2DBC72 #51D591 #82E1B0 #B4EDCF

Accessibility & contrast

On white

1.86

#51D591 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.28

#51D591 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D591

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D591	#FFFFFF	#000000	##000000
##51D591	1.00	1.86	11.28	11.28
#FFFFFF	1.86	1.00	21.00	21.00
#000000	11.28	21.00	1.00	1.00
##000000	11.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D4C58D

Deuteranopia (green-blind)

#C2B995

Tritanopia (blue-blind)

#05D3C3

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #51d591;
/* rgb */ color: rgb(81, 213, 145);
/* oklch */ color: oklch(78.3% 0.152 157.3);

Tailwind

colors: {
  custom: {
    50: '#8fe3b1',
    500: '#51d591',
    950: '#000000',
  },
}

SCSS

$custom: #51d591;
$custom-light: #8fe3b1;
$custom-dark: #000000;

JSON

{
  "hex": "#51d591",
  "rgb": {
    "r": 81,
    "g": 213,
    "b": 145
  },
  "hsl": {
    "h": 149.091,
    "s": 61.111,
    "l": 57.647
  },
  "oklch": {
    "l": 0.78304,
    "c": 0.15206,
    "h": 157.3
  },
  "luminance": 0.51382
}

Semantic roles & 50–950 ramp

primary

#51D591

secondary

#903A66

accent

#4496E4

background

#FCFEFD

surface

#F5FCF7

border

#CFD5D0

text

#0D1510

muted

#7F8481

Preview Lab

Preview with #51D591

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

Preview Lab → · Contrast checker → · Palette generator →