#51C451#51C451

#51C451 is a light, vivid green. Relative luminance 0.418; OKLCH L 72.9% C 0.187 H 143.4°. Best body text is #000000 at 9.36:1 contrast (WCAG AA passes).

Color values

HEX	#51C451
RGB	rgb(81, 196, 81)
HSL	hsl(120, 49%, 54%)
HSV	hsv(120, 59%, 77%)
CMYK	cmyk(58.7%, 0%, 58.7%, 23.1%)
CIE-LAB	lab(70.75, -55.20, 47.30)
CIE-LCH	lch(70.75, 72.69, 139.41°)
OKLab	oklab(72.93% -0.15 0.1115)
OKLCH	oklch(72.93% 0.187 143.4)
XYZ	xyz(24.6171, 41.8210, 14.5580)
Luminance	0.4182 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C451 #C451C4

analogous

#8BC451 #51C451 #51C48B

triadic

#51C451 #5151C4 #C45151

tetradic

#51C451 #518BC4 #C451C4 #C48B51

square

#51C451 #518BC4 #C451C4 #C48B51

split-complementary

#51C451 #8B51C4 #C4518B

monochromatic

#277327 #37A137 #51C451 #7FD37F #ACE3AC

Accessibility & contrast

On white

2.24

#51C451 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.36

#51C451 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C451

9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C451	#FFFFFF	#000000	##000000
##51C451	1.00	2.24	9.36	9.36
#FFFFFF	2.24	1.00	21.00	21.00
#000000	9.36	21.00	1.00	1.00
##000000	9.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C8B345

Deuteranopia (green-blind)

#B9A95A

Tritanopia (blue-blind)

#3DBFAB

Achromatopsia (no color)

#ADADAD

Design tokens & code

CSS

--color: #51c451;
/* rgb */ color: rgb(81, 196, 81);
/* oklch */ color: oklch(72.9% 0.187 143.4);

Tailwind

colors: {
  custom: {
    50: '#8dd785',
    500: '#51c451',
    950: '#000000',
  },
}

SCSS

$custom: #51c451;
$custom-light: #8dd785;
$custom-dark: #000000;

JSON

{
  "hex": "#51c451",
  "rgb": {
    "r": 81,
    "g": 196,
    "b": 81
  },
  "hsl": {
    "h": 120,
    "s": 49.356,
    "l": 54.314
  },
  "oklch": {
    "l": 0.72934,
    "c": 0.1869,
    "h": 143.4
  },
  "luminance": 0.41823
}

Semantic roles & 50–950 ramp

primary

#51C451

secondary

#D1A0D1

accent

#4FD9D9

background

#F9FDF8

surface

#F1FAEF

border

#CBD3CA

text

#0D140B

muted

#7E837C

Preview Lab

Preview with #51C451

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

Preview Lab → · Contrast checker → · Palette generator →