#51E566#51E566

#51E566 is a light, highly saturated green. Relative luminance 0.587; OKLCH L 81.6% C 0.211 H 145.7°. Best body text is #000000 at 12.75:1 contrast (WCAG AA passes).

Color values

HEX	#51E566
RGB	rgb(81, 229, 102)
HSL	hsl(129, 74%, 61%)
HSV	hsv(129, 65%, 90%)
CMYK	cmyk(64.6%, 0%, 55.5%, 10.2%)
CIE-LAB	lab(81.15, -64.48, 49.92)
CIE-LCH	lch(81.15, 81.55, 142.25°)
OKLab	oklab(81.59% -0.1743 0.1189)
OKLCH	oklch(81.59% 0.211 145.7)
XYZ	xyz(33.8087, 58.7438, 22.1248)
Luminance	0.5875 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E566 #E551D0

analogous

#86E551 #51E566 #51E5B0

triadic

#51E566 #6651E5 #E56651

tetradic

#51E566 #5186E5 #E551D0 #E5B051

square

#51E566 #5186E5 #E551D0 #E5B051

split-complementary

#51E566 #B051E5 #E55186

monochromatic

#18A32C #20D83A #51E566 #86ED95 #BBF5C4

Accessibility & contrast

On white

1.65

#51E566 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.75

#51E566 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E566

12.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E566	#FFFFFF	#000000	##000000
##51E566	1.00	1.65	12.75	12.75
#FFFFFF	1.65	1.00	21.00	21.00
#000000	12.75	21.00	1.00	1.00
##000000	12.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E8D15A

Deuteranopia (green-blind)

#D6C570

Tritanopia (blue-blind)

#26E0C9

Achromatopsia (no color)

#CACACA

Design tokens & code

CSS

--color: #51e566;
/* rgb */ color: rgb(81, 229, 102);
/* oklch */ color: oklch(81.6% 0.211 145.7);

Tailwind

colors: {
  custom: {
    50: '#92ee95',
    500: '#51e566',
    950: '#000000',
  },
}

SCSS

$custom: #51e566;
$custom-light: #92ee95;
$custom-dark: #000000;

JSON

{
  "hex": "#51e566",
  "rgb": {
    "r": 81,
    "g": 229,
    "b": 102
  },
  "hsl": {
    "h": 128.514,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.81592,
    "c": 0.21095,
    "h": 145.7
  },
  "luminance": 0.58747
}

Semantic roles & 50–950 ramp

primary

#51E566

secondary

#A63596

accent

#0FBAD6

background

#FCFFFC

surface

#F5FEF4

border

#CFD6CE

text

#0E160D

muted

#7F857F

Preview Lab

Preview with #51E566

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

Preview Lab → · Contrast checker → · Palette generator →