#51E558#51E558

#51E558 is a light, highly saturated green. Relative luminance 0.585; OKLCH L 81.4% C 0.222 H 143.9°. Best body text is #000000 at 12.70:1 contrast (WCAG AA passes).

Color values

HEX	#51E558
RGB	rgb(81, 229, 88)
HSL	hsl(123, 74%, 61%)
HSV	hsv(123, 65%, 90%)
CMYK	cmyk(64.6%, 0%, 61.6%, 10.2%)
CIE-LAB	lab(81.01, -66.11, 55.95)
CIE-LCH	lch(81.01, 86.61, 139.76°)
OKLab	oklab(81.43% -0.1792 0.1307)
OKLCH	oklch(81.43% 0.222 143.9)
XYZ	xyz(33.1721, 58.4891, 18.7720)
Luminance	0.5849 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E558 #E551DE

analogous

#94E551 #51E558 #51E5A2

triadic

#51E558 #5851E5 #E55851

tetradic

#51E558 #5194E5 #E551DE #E5A251

square

#51E558 #5194E5 #E551DE #E5A251

split-complementary

#51E558 #A251E5 #E55194

monochromatic

#18A31F #20D829 #51E558 #86ED8B #BBF5BE

Accessibility & contrast

On white

1.65

#51E558 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.70

#51E558 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E558

12.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E558	#FFFFFF	#000000	##000000
##51E558	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)

#E9D148

Deuteranopia (green-blind)

#D7C464

Tritanopia (blue-blind)

#2DDFC7

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #51e558;
/* rgb */ color: rgb(81, 229, 88);
/* oklch */ color: oklch(81.4% 0.222 143.9);

Tailwind

colors: {
  custom: {
    50: '#93ee8c',
    500: '#51e558',
    950: '#000000',
  },
}

SCSS

$custom: #51e558;
$custom-light: #93ee8c;
$custom-dark: #000000;

JSON

{
  "hex": "#51e558",
  "rgb": {
    "r": 81,
    "g": 229,
    "b": 88
  },
  "hsl": {
    "h": 122.838,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.81431,
    "c": 0.22184,
    "h": 143.9
  },
  "luminance": 0.58493
}

Semantic roles & 50–950 ramp

primary

#51E558

secondary

#A635A0

accent

#0FCDD6

background

#FCFFFC

surface

#F5FEF4

border

#CFD6CE

text

#0E170C

muted

#7F857F

Preview Lab

Preview with #51E558

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

Preview Lab → · Contrast checker → · Palette generator →