#518B18#518B18

#518B18 is a mid, vivid yellow-green. Relative luminance 0.203; OKLCH L 57.5% C 0.153 H 133.6°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#518B18
RGB	rgb(81, 139, 24)
HSL	hsl(90, 71%, 32%)
HSV	hsv(90, 83%, 55%)
CMYK	cmyk(41.7%, 0%, 82.7%, 45.5%)
CIE-LAB	lab(52.15, -37.53, 50.44)
CIE-LCH	lch(52.15, 62.88, 126.65°)
OKLab	oklab(57.5% -0.1057 0.1111)
OKLCH	oklch(57.5% 0.153 133.6)
XYZ	xyz(12.7906, 20.2799, 4.1044)
Luminance	0.2028 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#518B18 #52188B

analogous

#8B8B18 #518B18 #188B19

triadic

#518B18 #18518B #8B1851

tetradic

#518B18 #188B8B #52188B #8B1918

square

#518B18 #188B8B #52188B #8B1918

split-complementary

#518B18 #19188B #8B188B

monochromatic

#142306 #33570F #518B18 #6FBF21 #8EDE3F

Accessibility & contrast

On white

4.15

#518B18 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#518B18 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #518B18

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##518B18	#FFFFFF	#000000	##000000
##518B18	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#917F00

Deuteranopia (green-blind)

#897B26

Tritanopia (blue-blind)

#518576

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #518b18;
/* rgb */ color: rgb(81, 139, 24);
/* oklch */ color: oklch(57.5% 0.153 133.6);

Tailwind

colors: {
  custom: {
    50: '#87ad60',
    500: '#518b18',
    950: '#000000',
  },
}

SCSS

$custom: #518b18;
$custom-light: #87ad60;
$custom-dark: #000000;

JSON

{
  "hex": "#518b18",
  "rgb": {
    "r": 81,
    "g": 139,
    "b": 24
  },
  "hsl": {
    "h": 90.261,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.57499,
    "c": 0.15336,
    "h": 133.6
  },
  "luminance": 0.20281
}

Semantic roles & 50–950 ramp

primary

#518B18

secondary

#8040BE

accent

#3AED95

background

#F8FAF6

surface

#F0F4EB

border

#CBCEC6

text

#0C1005

muted

#7D7F7A

Preview Lab

Preview with #518B18

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

Preview Lab → · Contrast checker → · Palette generator →