#51B316#51B316

#51B316 is a light, highly saturated yellow-green. Relative luminance 0.340; OKLCH L 68.1% C 0.201 H 137.5°. Best body text is #000000 at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#51B316
RGB	rgb(81, 179, 22)
HSL	hsl(97, 78%, 39%)
HSV	hsv(97, 88%, 70%)
CMYK	cmyk(54.7%, 0%, 87.7%, 29.8%)
CIE-LAB	lab(65.00, -53.45, 62.32)
CIE-LCH	lch(65.00, 82.10, 130.62°)
OKLab	oklab(68.07% -0.1484 0.1359)
OKLCH	oklch(68.07% 0.201 137.5)
XYZ	xyz(19.6576, 34.0459, 6.2945)
Luminance	0.3405 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B316 #7816B3

analogous

#A0B316 #51B316 #16B329

triadic

#51B316 #1651B3 #B31651

tetradic

#51B316 #16A0B3 #7816B3 #B32916

square

#51B316 #16A0B3 #7816B3 #B32916

split-complementary

#51B316 #2916B3 #B316A0

monochromatic

#204609 #387C0F #51B316 #6BE422 #90EB59

Accessibility & contrast

On white

2.69

#51B316 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.81

#51B316 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B316

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B316	#FFFFFF	#000000	##000000
##51B316	1.00	2.69	7.81	7.81
#FFFFFF	2.69	1.00	21.00	21.00
#000000	7.81	21.00	1.00	1.00
##000000	7.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A300

Deuteranopia (green-blind)

#AD9B2D

Tritanopia (blue-blind)

#49AC98

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #51b316;
/* rgb */ color: rgb(81, 179, 22);
/* oklch */ color: oklch(68.1% 0.201 137.5);

Tailwind

colors: {
  custom: {
    50: '#8dca66',
    500: '#51b316',
    950: '#000000',
  },
}

SCSS

$custom: #51b316;
$custom-light: #8dca66;
$custom-dark: #000000;

JSON

{
  "hex": "#51b316",
  "rgb": {
    "r": 81,
    "g": 179,
    "b": 22
  },
  "hsl": {
    "h": 97.452,
    "s": 78.109,
    "l": 39.412
  },
  "oklch": {
    "l": 0.68065,
    "c": 0.20123,
    "h": 137.5
  },
  "luminance": 0.34047
}

Semantic roles & 50–950 ramp

primary

#51B316

secondary

#A157CE

accent

#33F5AC

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #51B316

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

Preview Lab → · Contrast checker → · Palette generator →