#518B1B#518B1B

#518B1B is a mid, vivid yellow-green. Relative luminance 0.203; OKLCH L 57.5% C 0.152 H 133.8°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#518B1B
RGB	rgb(81, 139, 27)
HSL	hsl(91, 67%, 33%)
HSV	hsv(91, 81%, 55%)
CMYK	cmyk(41.7%, 0%, 80.6%, 45.5%)
CIE-LAB	lab(52.17, -37.38, 49.54)
CIE-LCH	lch(52.17, 62.06, 127.04°)
OKLab	oklab(57.52% -0.1051 0.1097)
OKLCH	oklch(57.52% 0.152 133.8)
XYZ	xyz(12.8236, 20.2930, 4.2780)
Luminance	0.2029 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#518B1B #551B8B

analogous

#898B1B #518B1B #1B8B1D

triadic

#518B1B #1B518B #8B1B51

tetradic

#518B1B #1B898B #551B8B #8B1D1B

square

#518B1B #1B898B #551B8B #8B1D1B

split-complementary

#518B1B #1D1B8B #8B1B89

monochromatic

#152507 #335811 #518B1B #6FBE25 #8EDB45

Accessibility & contrast

On white

4.15

#518B1B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#518B1B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #518B1B

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##518B1B	#FFFFFF	#000000	##000000
##518B1B	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)

#897B27

Tritanopia (blue-blind)

#518576

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #518b1b;
/* rgb */ color: rgb(81, 139, 27);
/* oklch */ color: oklch(57.5% 0.152 133.8);

Tailwind

colors: {
  custom: {
    50: '#87ad62',
    500: '#518b1b',
    950: '#000000',
  },
}

SCSS

$custom: #518b1b;
$custom-light: #87ad62;
$custom-dark: #000000;

JSON

{
  "hex": "#518b1b",
  "rgb": {
    "r": 81,
    "g": 139,
    "b": 27
  },
  "hsl": {
    "h": 91.071,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.57516,
    "c": 0.15191,
    "h": 133.8
  },
  "luminance": 0.20294
}

Semantic roles & 50–950 ramp

primary

#518B1B

secondary

#8345BC

accent

#3DEA97

background

#F8FAF6

surface

#F0F4EB

border

#CBCEC6

text

#0C1005

muted

#7D7F7A

Preview Lab

Preview with #518B1B

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

Preview Lab → · Contrast checker → · Palette generator →