#51E557#51E557

#51E557 is a light, highly saturated green. Relative luminance 0.585; OKLCH L 81.4% C 0.223 H 143.8°. Best body text is #000000 at 12.70:1 contrast (WCAG AA passes).

Color values

HEX	#51E557
RGB	rgb(81, 229, 87)
HSL	hsl(122, 74%, 61%)
HSV	hsv(122, 65%, 90%)
CMYK	cmyk(64.6%, 0%, 62%, 10.2%)
CIE-LAB	lab(81.00, -66.22, 56.36)
CIE-LCH	lch(81.00, 86.96, 139.60°)
OKLab	oklab(81.42% -0.1796 0.1315)
OKLCH	oklch(81.42% 0.223 143.8)
XYZ	xyz(33.1309, 58.4727, 18.5553)
Luminance	0.5848 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E557 #E551DF

analogous

#95E551 #51E557 #51E5A1

triadic

#51E557 #5751E5 #E55751

tetradic

#51E557 #5195E5 #E551DF #E5A151

square

#51E557 #5195E5 #E551DF #E5A151

split-complementary

#51E557 #A151E5 #E55195

monochromatic

#18A31E #20D828 #51E557 #86ED8A #BBF5BE

Accessibility & contrast

On white

1.65

#51E557 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.70

#51E557 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E557

12.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E557	#FFFFFF	#000000	##000000
##51E557	1.00	1.65	12.70	12.70
#FFFFFF	1.65	1.00	21.00	21.00
#000000	12.70	21.00	1.00	1.00
##000000	12.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E9D147

Deuteranopia (green-blind)

#D7C463

Tritanopia (blue-blind)

#2DDFC7

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #51e557;
/* rgb */ color: rgb(81, 229, 87);
/* oklch */ color: oklch(81.4% 0.223 143.8);

Tailwind

colors: {
  custom: {
    50: '#93ee8b',
    500: '#51e557',
    950: '#000000',
  },
}

SCSS

$custom: #51e557;
$custom-light: #93ee8b;
$custom-dark: #000000;

JSON

{
  "hex": "#51e557",
  "rgb": {
    "r": 81,
    "g": 229,
    "b": 87
  },
  "hsl": {
    "h": 122.432,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.8142,
    "c": 0.22257,
    "h": 143.8
  },
  "luminance": 0.58476
}

Semantic roles & 50–950 ramp

primary

#51E557

secondary

#A635A1

accent

#0FCED6

background

#FCFFFC

surface

#F5FEF4

border

#CFD6CE

text

#0E170C

muted

#7F857F

Preview Lab

Preview with #51E557

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

Preview Lab → · Contrast checker → · Palette generator →