#51D991#51D991

#51D991 is a light, vivid green. Relative luminance 0.534; OKLCH L 79.3% C 0.157 H 156.6°. Best body text is #000000 at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#51D991
RGB	rgb(81, 217, 145)
HSL	hsl(148, 64%, 58%)
HSV	hsv(148, 63%, 85%)
CMYK	cmyk(62.7%, 0%, 33.2%, 14.9%)
CIE-LAB	lab(78.12, -53.16, 24.83)
CIE-LCH	lch(78.12, 58.67, 154.96°)
OKLab	oklab(79.3% -0.1444 0.0626)
OKLCH	oklch(79.3% 0.157 156.6)
XYZ	xyz(33.3141, 53.4159, 35.3372)
Luminance	0.5342 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D991 #D95199

analogous

#55D951 #51D991 #51D9D5

triadic

#51D991 #9151D9 #D99151

tetradic

#51D991 #5155D9 #D95199 #D9D551

square

#51D991 #5155D9 #D95199 #D9D551

split-complementary

#51D991 #D551D9 #D95155

monochromatic

#1F9054 #2AC272 #51D991 #83E4B1 #B5EFD1

Accessibility & contrast

On white

1.80

#51D991 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.68

#51D991 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D991

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D991	#FFFFFF	#000000	##000000
##51D991	1.00	1.80	11.68	11.68
#FFFFFF	1.80	1.00	21.00	21.00
#000000	11.68	21.00	1.00	1.00
##000000	11.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D8C98C

Deuteranopia (green-blind)

#C6BC96

Tritanopia (blue-blind)

#00D7C6

Achromatopsia (no color)

#C1C1C1

Design tokens & code

CSS

--color: #51d991;
/* rgb */ color: rgb(81, 217, 145);
/* oklch */ color: oklch(79.3% 0.157 156.6);

Tailwind

colors: {
  custom: {
    50: '#8fe6b1',
    500: '#51d991',
    950: '#000000',
  },
}

SCSS

$custom: #51d991;
$custom-light: #8fe6b1;
$custom-dark: #000000;

JSON

{
  "hex": "#51d991",
  "rgb": {
    "r": 81,
    "g": 217,
    "b": 145
  },
  "hsl": {
    "h": 148.235,
    "s": 64.151,
    "l": 58.431
  },
  "oklch": {
    "l": 0.79298,
    "c": 0.15741,
    "h": 156.6
  },
  "luminance": 0.53419
}

Semantic roles & 50–950 ramp

primary

#51D991

secondary

#95396A

accent

#4199E7

background

#FCFEFD

surface

#F5FCF7

border

#CFD5D0

text

#0E1611

muted

#7F8481

Preview Lab

Preview with #51D991

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

Preview Lab → · Contrast checker → · Palette generator →