#51E999#51E999

#51E999 is a very light, vivid green. Relative luminance 0.623; OKLCH L 83.4% C 0.171 H 156.3°. Best body text is #000000 at 13.47:1 contrast (WCAG AA passes).

Color values

HEX	#51E999
RGB	rgb(81, 233, 153)
HSL	hsl(148, 78%, 62%)
HSV	hsv(148, 65%, 91%)
CMYK	cmyk(65.2%, 0%, 34.3%, 8.6%)
CIE-LAB	lab(83.08, -57.85, 27.43)
CIE-LCH	lch(83.08, 64.02, 154.63°)
OKLab	oklab(83.42% -0.1569 0.069)
OKLCH	oklch(83.42% 0.171 156.3)
XYZ	xyz(38.2785, 62.3230, 40.1430)
Luminance	0.6233 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E999 #E951A1

analogous

#55E951 #51E999 #51E9E5

triadic

#51E999 #9951E9 #E99951

tetradic

#51E999 #5155E9 #E951A1 #E9E551

square

#51E999 #5155E9 #E951A1 #E9E551

split-complementary

#51E999 #E551E9 #E95155

monochromatic

#16AA5C #1CE079 #51E999 #87F0B9 #BEF7D9

Accessibility & contrast

On white

1.56

#51E999 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.47

#51E999 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E999

13.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E999	#FFFFFF	#000000	##000000
##51E999	1.00	1.56	13.47	13.47
#FFFFFF	1.56	1.00	21.00	21.00
#000000	13.47	21.00	1.00	1.00
##000000	13.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E8D794

Deuteranopia (green-blind)

#D4C99E

Tritanopia (blue-blind)

#00E7D4

Achromatopsia (no color)

#CFCFCF

Design tokens & code

CSS

--color: #51e999;
/* rgb */ color: rgb(81, 233, 153);
/* oklch */ color: oklch(83.4% 0.171 156.3);

Tailwind

colors: {
  custom: {
    50: '#92f1b7',
    500: '#51e999',
    950: '#000000',
  },
}

SCSS

$custom: #51e999;
$custom-light: #92f1b7;
$custom-dark: #000000;

JSON

{
  "hex": "#51e999",
  "rgb": {
    "r": 81,
    "g": 233,
    "b": 153
  },
  "hsl": {
    "h": 148.421,
    "s": 77.551,
    "l": 61.569
  },
  "oklch": {
    "l": 0.83423,
    "c": 0.17138,
    "h": 156.3
  },
  "luminance": 0.62327
}

Semantic roles & 50–950 ramp

primary

#51E999

secondary

#AB3372

accent

#0C78DA

background

#FCFFFD

surface

#F5FEF8

border

#CFD6D1

text

#0E1711

muted

#7F8581

Preview Lab

Preview with #51E999

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

Preview Lab → · Contrast checker → · Palette generator →