#51B73A#51B73A

#51B73A is a light, vivid green. Relative luminance 0.359; OKLCH L 69.3% C 0.188 H 140.3°. Best body text is #000000 at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#51B73A
RGB	rgb(81, 183, 58)
HSL	hsl(109, 52%, 47%)
HSV	hsv(109, 68%, 72%)
CMYK	cmyk(55.7%, 0%, 68.3%, 28.2%)
CIE-LAB	lab(66.46, -52.73, 52.47)
CIE-LCH	lch(66.46, 74.38, 135.14°)
OKLab	oklab(69.33% -0.1445 0.1202)
OKLCH	oklch(69.33% 0.188 140.3)
XYZ	xyz(21.0896, 35.9200, 9.8241)
Luminance	0.3592 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B73A #A03AB7

analogous

#90B73A #51B73A #3AB762

triadic

#51B73A #3A51B7 #B73A51

tetradic

#51B73A #3A90B7 #A03AB7 #B7623A

square

#51B73A #3A90B7 #A03AB7 #B7623A

split-complementary

#51B73A #623AB7 #B73A90

monochromatic

#285A1D #3C892B #51B73A #75CD61 #9EDC90

Accessibility & contrast

On white

2.57

#51B73A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.18

#51B73A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B73A

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B73A	#FFFFFF	#000000	##000000
##51B73A	1.00	2.57	8.18	8.18
#FFFFFF	2.57	1.00	21.00	21.00
#000000	8.18	21.00	1.00	1.00
##000000	8.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BCA728

Deuteranopia (green-blind)

#AF9E45

Tritanopia (blue-blind)

#45B19E

Achromatopsia (no color)

#A2A2A2

Design tokens & code

CSS

--color: #51b73a;
/* rgb */ color: rgb(81, 183, 58);
/* oklch */ color: oklch(69.3% 0.188 140.3);

Tailwind

colors: {
  custom: {
    50: '#8ccd77',
    500: '#51b73a',
    950: '#000000',
  },
}

SCSS

$custom: #51b73a;
$custom-light: #8ccd77;
$custom-dark: #000000;

JSON

{
  "hex": "#51b73a",
  "rgb": {
    "r": 81,
    "g": 183,
    "b": 58
  },
  "hsl": {
    "h": 108.96,
    "s": 51.867,
    "l": 47.255
  },
  "oklch": {
    "l": 0.69331,
    "c": 0.18796,
    "h": 140.3
  },
  "luminance": 0.35922
}

Semantic roles & 50–950 ramp

primary

#51B73A

secondary

#BB86C7

accent

#4CDBC1

background

#F9FCF7

surface

#F1F9ED

border

#CBD2C8

text

#0D1409

muted

#7E827B

Preview Lab

Preview with #51B73A

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

Preview Lab → · Contrast checker → · Palette generator →