#51FF63#51FF63

#51FF63 is a very light, highly saturated green. Relative luminance 0.742; OKLCH L 88.1% C 0.244 H 144.7°. Best body text is #000000 at 15.83:1 contrast (WCAG AA passes).

Color values

HEX	#51FF63
RGB	rgb(81, 255, 99)
HSL	hsl(126, 100%, 66%)
HSV	hsv(126, 68%, 100%)
CMYK	cmyk(68.2%, 0%, 61.2%, 0%)
CIE-LAB	lab(89.00, -73.56, 60.33)
CIE-LCH	lch(89.00, 95.14, 140.64°)
OKLab	oklab(88.08% -0.199 0.1411)
OKLCH	oklch(88.08% 0.244 144.7)
XYZ	xyz(41.4028, 74.1657, 23.9354)
Luminance	0.7417 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51FF63 #FF51ED

analogous

#96FF51 #51FF63 #51FFBA

triadic

#51FF63 #6351FF #FF6351

tetradic

#51FF63 #5196FF #FF51ED #FFBA51

square

#51FF63 #5196FF #FF51ED #FFBA51

split-complementary

#51FF63 #BA51FF #FF5196

monochromatic

#00D616 #14FF2C #51FF63 #8EFF9A #CBFFD1

Accessibility & contrast

On white

1.33

#51FF63 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.83

#51FF63 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51FF63

15.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51FF63	#FFFFFF	#000000	##000000
##51FF63	1.00	1.33	15.83	15.83
#FFFFFF	1.33	1.00	21.00	21.00
#000000	15.83	21.00	1.00	1.00
##000000	15.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE851

Deuteranopia (green-blind)

#EFDA70

Tritanopia (blue-blind)

#0EF8DE

Achromatopsia (no color)

#E0E0E0

Design tokens & code

CSS

--color: #51ff63;
/* rgb */ color: rgb(81, 255, 99);
/* oklch */ color: oklch(88.1% 0.244 144.7);

Tailwind

colors: {
  custom: {
    50: '#97ff95',
    500: '#51ff63',
    950: '#000000',
  },
}

SCSS

$custom: #51ff63;
$custom-light: #97ff95;
$custom-dark: #000000;

JSON

{
  "hex": "#51ff63",
  "rgb": {
    "r": 81,
    "g": 255,
    "b": 99
  },
  "hsl": {
    "h": 126.207,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.88076,
    "c": 0.24391,
    "h": 144.7
  },
  "luminance": 0.7417
}

Semantic roles & 50–950 ramp

primary

#51FF63

secondary

#D025BE

accent

#00CEE6

background

#FCFFFC

surface

#F6FFF5

border

#D0D7CF

text

#0F180E

muted

#80867F

Preview Lab

Preview with #51FF63

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

Preview Lab → · Contrast checker → · Palette generator →