#51E555#51E555

#51E555 is a light, highly saturated green. Relative luminance 0.584; OKLCH L 81.4% C 0.224 H 143.6°. Best body text is #000000 at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#51E555
RGB	rgb(81, 229, 85)
HSL	hsl(122, 74%, 61%)
HSV	hsv(122, 65%, 90%)
CMYK	cmyk(64.6%, 0%, 62.9%, 10.2%)
CIE-LAB	lab(80.98, -66.43, 57.18)
CIE-LCH	lch(80.98, 87.65, 139.28°)
OKLab	oklab(81.4% -0.1802 0.1331)
OKLCH	oklch(81.4% 0.224 143.6)
XYZ	xyz(33.0504, 58.4405, 18.1310)
Luminance	0.5844 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E555 #E551E1

analogous

#97E551 #51E555 #51E59F

triadic

#51E555 #5551E5 #E55551

tetradic

#51E555 #5197E5 #E551E1 #E59F51

square

#51E555 #5197E5 #E551E1 #E59F51

split-complementary

#51E555 #9F51E5 #E55197

monochromatic

#18A31C #20D825 #51E555 #86ED89 #BBF5BD

Accessibility & contrast

On white

1.66

#51E555 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.69

#51E555 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E555

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E555	#FFFFFF	#000000	##000000
##51E555	1.00	1.66	12.69	12.69
#FFFFFF	1.66	1.00	21.00	21.00
#000000	12.69	21.00	1.00	1.00
##000000	12.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E9D144

Deuteranopia (green-blind)

#D8C461

Tritanopia (blue-blind)

#2EDFC7

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #51e555;
/* rgb */ color: rgb(81, 229, 85);
/* oklch */ color: oklch(81.4% 0.224 143.6);

Tailwind

colors: {
  custom: {
    50: '#93ee8a',
    500: '#51e555',
    950: '#000000',
  },
}

SCSS

$custom: #51e555;
$custom-light: #93ee8a;
$custom-dark: #000000;

JSON

{
  "hex": "#51e555",
  "rgb": {
    "r": 81,
    "g": 229,
    "b": 85
  },
  "hsl": {
    "h": 121.622,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.814,
    "c": 0.22402,
    "h": 143.6
  },
  "luminance": 0.58444
}

Semantic roles & 50–950 ramp

primary

#51E555

secondary

#A635A3

accent

#0FD1D6

background

#FCFFFC

surface

#F5FEF4

border

#CFD6CE

text

#0E170C

muted

#7F857F

Preview Lab

Preview with #51E555

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

Preview Lab → · Contrast checker → · Palette generator →