#51E781#51E781

#51E781 is a very light, vivid green. Relative luminance 0.605; OKLCH L 82.5% C 0.190 H 150.4°. Best body text is #000000 at 13.10:1 contrast (WCAG AA passes).

Color values

HEX	#51E781
RGB	rgb(81, 231, 129)
HSL	hsl(139, 76%, 61%)
HSV	hsv(139, 65%, 91%)
CMYK	cmyk(64.9%, 0%, 44.2%, 9.4%)
CIE-LAB	lab(82.10, -61.32, 38.21)
CIE-LCH	lch(82.10, 72.25, 148.07°)
OKLab	oklab(82.49% -0.1654 0.0939)
OKLCH	oklch(82.49% 0.19 150.4)
XYZ	xyz(35.9289, 60.4824, 30.5454)
Luminance	0.6049 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E781 #E751B7

analogous

#6CE751 #51E781 #51E7CC

triadic

#51E781 #8151E7 #E78151

tetradic

#51E781 #516CE7 #E751B7 #E7CC51

square

#51E781 #516CE7 #E751B7 #E7CC51

split-complementary

#51E781 #CC51E7 #E7516C

monochromatic

#17A745 #1EDC5B #51E781 #87EEA8 #BDF6CF

Accessibility & contrast

On white

1.60

#51E781 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.10

#51E781 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E781

13.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E781	#FFFFFF	#000000	##000000
##51E781	1.00	1.60	13.10	13.10
#FFFFFF	1.60	1.00	21.00	21.00
#000000	13.10	21.00	1.00	1.00
##000000	13.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E8D479

Deuteranopia (green-blind)

#D5C788

Tritanopia (blue-blind)

#09E3CE

Achromatopsia (no color)

#CCCCCC

Design tokens & code

CSS

--color: #51e781;
/* rgb */ color: rgb(81, 231, 129);
/* oklch */ color: oklch(82.5% 0.190 150.4);

Tailwind

colors: {
  custom: {
    50: '#92f0a7',
    500: '#51e781',
    950: '#000000',
  },
}

SCSS

$custom: #51e781;
$custom-light: #92f0a7;
$custom-dark: #000000;

JSON

{
  "hex": "#51e781",
  "rgb": {
    "r": 81,
    "g": 231,
    "b": 129
  },
  "hsl": {
    "h": 139.2,
    "s": 75.758,
    "l": 61.176
  },
  "oklch": {
    "l": 0.82487,
    "c": 0.19021,
    "h": 150.4
  },
  "luminance": 0.60486
}

Semantic roles & 50–950 ramp

primary

#51E781

secondary

#A83483

accent

#0E97D8

background

#FCFFFC

surface

#F5FEF6

border

#CFD6D0

text

#0E170F

muted

#7F8580

Preview Lab

Preview with #51E781

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

Preview Lab → · Contrast checker → · Palette generator →