#51B552#51B552

#51B552 is a light, vivid green. Relative luminance 0.354; OKLCH L 69.1% C 0.166 H 143.7°. Best body text is #000000 at 8.08:1 contrast (WCAG AA passes).

Color values

HEX	#51B552
RGB	rgb(81, 181, 82)
HSL	hsl(121, 40%, 51%)
HSV	hsv(121, 55%, 71%)
CMYK	cmyk(55.2%, 0%, 54.7%, 29%)
CIE-LAB	lab(66.06, -49.35, 41.30)
CIE-LCH	lch(66.06, 64.36, 140.07°)
OKLab	oklab(69.08% -0.1341 0.0986)
OKLCH	oklch(69.08% 0.166 143.7)
XYZ	xyz(21.4390, 35.4045, 13.6850)
Luminance	0.3541 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B552 #B551B4

analogous

#82B551 #51B552 #51B584

triadic

#51B552 #5251B5 #B55251

tetradic

#51B552 #5182B5 #B551B4 #B58451

square

#51B552 #5182B5 #B551B4 #B58451

split-complementary

#51B552 #8451B5 #B55182

monochromatic

#2A622A #3C8D3D #51B552 #7CC77D #A7DAA7

Accessibility & contrast

On white

2.60

#51B552 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.08

#51B552 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B552

8.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B552	#FFFFFF	#000000	##000000
##51B552	1.00	2.60	8.08	8.08
#FFFFFF	2.60	1.00	21.00	21.00
#000000	8.08	21.00	1.00	1.00
##000000	8.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8A649

Deuteranopia (green-blind)

#AB9D59

Tritanopia (blue-blind)

#41B09F

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #51b552;
/* rgb */ color: rgb(81, 181, 82);
/* oklch */ color: oklch(69.1% 0.166 143.7);

Tailwind

colors: {
  custom: {
    50: '#8bcc85',
    500: '#51b552',
    950: '#000000',
  },
}

SCSS

$custom: #51b552;
$custom-light: #8bcc85;
$custom-dark: #000000;

JSON

{
  "hex": "#51b552",
  "rgb": {
    "r": 81,
    "g": 181,
    "b": 82
  },
  "hsl": {
    "h": 120.6,
    "s": 40.323,
    "l": 51.373
  },
  "oklch": {
    "l": 0.6908,
    "c": 0.16643,
    "h": 143.7
  },
  "luminance": 0.35406
}

Semantic roles & 50–950 ramp

primary

#51B552

secondary

#C79BC7

accent

#58CFD0

background

#F8FCF8

surface

#F0F9EF

border

#CBD2CA

text

#0D130B

muted

#7D827C

Preview Lab

Preview with #51B552

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

Preview Lab → · Contrast checker → · Palette generator →