#51DE91#51DE91

#51DE91 is a light, vivid green. Relative luminance 0.560; OKLCH L 80.5% C 0.164 H 155.7°. Best body text is #000000 at 12.21:1 contrast (WCAG AA passes).

Color values

HEX	#51DE91
RGB	rgb(81, 222, 145)
HSL	hsl(147, 68%, 59%)
HSV	hsv(147, 64%, 87%)
CMYK	cmyk(63.5%, 0%, 34.7%, 12.9%)
CIE-LAB	lab(79.63, -55.12, 26.88)
CIE-LCH	lch(79.63, 61.32, 154.00°)
OKLab	oklab(80.54% -0.1495 0.0676)
OKLCH	oklch(80.54% 0.164 155.7)
XYZ	xyz(34.6224, 56.0326, 35.7733)
Luminance	0.5604 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51DE91 #DE519E

analogous

#58DE51 #51DE91 #51DED8

triadic

#51DE91 #9151DE #DE9151

tetradic

#51DE91 #5158DE #DE519E #DED851

square

#51DE91 #5158DE #DE519E #DED851

split-complementary

#51DE91 #D851DE #DE5158

monochromatic

#1D9855 #27CB71 #51DE91 #84E8B2 #B8F2D2

Accessibility & contrast

On white

1.72

#51DE91 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.21

#51DE91 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51DE91

12.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51DE91	#FFFFFF	#000000	##000000
##51DE91	1.00	1.72	12.21	12.21
#FFFFFF	1.72	1.00	21.00	21.00
#000000	12.21	21.00	1.00	1.00
##000000	12.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DDCD8C

Deuteranopia (green-blind)

#CBC096

Tritanopia (blue-blind)

#00DCCA

Achromatopsia (no color)

#C5C5C5

Design tokens & code

CSS

--color: #51de91;
/* rgb */ color: rgb(81, 222, 145);
/* oklch */ color: oklch(80.5% 0.164 155.7);

Tailwind

colors: {
  custom: {
    50: '#90e9b1',
    500: '#51de91',
    950: '#000000',
  },
}

SCSS

$custom: #51de91;
$custom-light: #90e9b1;
$custom-dark: #000000;

JSON

{
  "hex": "#51de91",
  "rgb": {
    "r": 81,
    "g": 222,
    "b": 145
  },
  "hsl": {
    "h": 147.234,
    "s": 68.116,
    "l": 59.412
  },
  "oklch": {
    "l": 0.8054,
    "c": 0.16405,
    "h": 155.7
  },
  "luminance": 0.56036
}

Semantic roles & 50–950 ramp

primary

#51DE91

secondary

#9C376E

accent

#3D9CEB

background

#FCFEFD

surface

#F5FDF7

border

#CFD5D0

text

#0E1611

muted

#7F8481

Preview Lab

Preview with #51DE91

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

Preview Lab → · Contrast checker → · Palette generator →