#51781A#51781A

#51781A is a mid, vivid yellow-green. Relative luminance 0.153; OKLCH L 52.5% C 0.128 H 130.0°. Best body text is #FFFFFF at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#51781A
RGB	rgb(81, 120, 26)
HSL	hsl(85, 64%, 29%)
HSV	hsv(85, 78%, 47%)
CMYK	cmyk(32.5%, 0%, 78.3%, 52.9%)
CIE-LAB	lab(45.98, -28.82, 44.02)
CIE-LCH	lch(45.98, 52.61, 123.22°)
OKLab	oklab(52.46% -0.0821 0.0979)
OKLCH	oklch(52.46% 0.128 130)
XYZ	xyz(10.2962, 15.2565, 3.3794)
Luminance	0.1526 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51781A #411A78

analogous

#78701A #51781A #22781A

triadic

#51781A #1A5178 #781A51

tetradic

#51781A #1A7870 #411A78 #781A22

square

#51781A #1A7870 #411A78 #781A22

split-complementary

#51781A #1A2278 #701A78

monochromatic

#111905 #2F460F #51781A #73AA25 #93D438

Accessibility & contrast

On white

5.18

#51781A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.05

#51781A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #51781A

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51781A	#FFFFFF	#000000	##FFFFFF
##51781A	1.00	5.18	4.05	5.18
#FFFFFF	5.18	1.00	21.00	1.00
#000000	4.05	21.00	1.00	21.00
##FFFFFF	5.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E6F05

Deuteranopia (green-blind)

#796C23

Tritanopia (blue-blind)

#537366

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #51781a;
/* rgb */ color: rgb(81, 120, 26);
/* oklch */ color: oklch(52.5% 0.128 130.0);

Tailwind

colors: {
  custom: {
    50: '#869f5e',
    500: '#51781a',
    950: '#000000',
  },
}

SCSS

$custom: #51781a;
$custom-light: #869f5e;
$custom-dark: #000000;

JSON

{
  "hex": "#51781a",
  "rgb": {
    "r": 81,
    "g": 120,
    "b": 26
  },
  "hsl": {
    "h": 84.894,
    "s": 64.384,
    "l": 28.627
  },
  "oklch": {
    "l": 0.52463,
    "c": 0.12776,
    "h": 130
  },
  "luminance": 0.15257
}

Semantic roles & 50–950 ramp

primary

#51781A

secondary

#6E41AC

accent

#40E786

background

#F8F9F5

surface

#F0F2E9

border

#CBCCC5

text

#0B0E05

muted

#7C7E79

Preview Lab

Preview with #51781A

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

Preview Lab → · Contrast checker → · Palette generator →