#51B928#51B928

#51B928 is a light, highly saturated green. Relative luminance 0.366; OKLCH L 69.7% C 0.201 H 138.8°. Best body text is #000000 at 8.32:1 contrast (WCAG AA passes).

Color values

HEX	#51B928
RGB	rgb(81, 185, 40)
HSL	hsl(103, 64%, 44%)
HSV	hsv(103, 78%, 73%)
CMYK	cmyk(56.2%, 0%, 78.4%, 27.5%)
CIE-LAB	lab(66.97, -54.78, 59.44)
CIE-LCH	lch(66.97, 80.83, 132.67°)
OKLab	oklab(69.72% -0.1511 0.1323)
OKLCH	oklch(69.72% 0.201 138.8)
XYZ	xyz(21.1245, 36.5987, 7.9581)
Luminance	0.3660 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B928 #9028B9

analogous

#9AB928 #51B928 #28B947

triadic

#51B928 #2851B9 #B92851

tetradic

#51B928 #289AB9 #9028B9 #B94728

square

#51B928 #289AB9 #9028B9 #B94728

split-complementary

#51B928 #4728B9 #B9289A

monochromatic

#255412 #3B871D #51B928 #70D747 #97E279

Accessibility & contrast

On white

2.52

#51B928 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.32

#51B928 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B928

8.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B928	#FFFFFF	#000000	##000000
##51B928	1.00	2.52	8.32	8.32
#FFFFFF	2.52	1.00	21.00	21.00
#000000	8.32	21.00	1.00	1.00
##000000	8.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BFA800

Deuteranopia (green-blind)

#B2A039

Tritanopia (blue-blind)

#47B39E

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #51b928;
/* rgb */ color: rgb(81, 185, 40);
/* oklch */ color: oklch(69.7% 0.201 138.8);

Tailwind

colors: {
  custom: {
    50: '#8dcf6e',
    500: '#51b928',
    950: '#000000',
  },
}

SCSS

$custom: #51b928;
$custom-light: #8dcf6e;
$custom-dark: #000000;

JSON

{
  "hex": "#51b928",
  "rgb": {
    "r": 81,
    "g": 185,
    "b": 40
  },
  "hsl": {
    "h": 103.034,
    "s": 64.444,
    "l": 44.118
  },
  "oklch": {
    "l": 0.6972,
    "c": 0.20088,
    "h": 138.8
  },
  "luminance": 0.366
}

Semantic roles & 50–950 ramp

primary

#51B928

secondary

#B173CA

accent

#40E7B8

background

#F9FCF7

surface

#F2F9ED

border

#CCD2C8

text

#0D1408

muted

#7E827B

Preview Lab

Preview with #51B928

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

Preview Lab → · Contrast checker → · Palette generator →