#538B18#538B18

#538B18 is a mid, vivid yellow-green. Relative luminance 0.204; OKLCH L 57.6% C 0.152 H 133.0°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#538B18
RGB	rgb(83, 139, 24)
HSL	hsl(89, 71%, 32%)
HSV	hsv(89, 83%, 55%)
CMYK	cmyk(40.3%, 0%, 82.7%, 45.5%)
CIE-LAB	lab(52.25, -36.81, 50.57)
CIE-LCH	lch(52.25, 62.55, 126.05°)
OKLab	oklab(57.61% -0.1039 0.1113)
OKLCH	oklch(57.61% 0.152 133)
XYZ	xyz(12.9646, 20.3696, 4.1126)
Luminance	0.2037 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#538B18 #50188B

analogous

#8B8A18 #538B18 #1A8B18

triadic

#538B18 #18538B #8B1853

tetradic

#538B18 #188B8A #50188B #8B181A

square

#538B18 #188B8A #50188B #8B181A

split-complementary

#538B18 #181A8B #8A188B

monochromatic

#152306 #34570F #538B18 #72BF21 #91DE3F

Accessibility & contrast

On white

4.14

#538B18 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#538B18 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #538B18

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##538B18	#FFFFFF	#000000	##000000
##538B18	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#917F00

Deuteranopia (green-blind)

#897B25

Tritanopia (blue-blind)

#538576

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #538b18;
/* rgb */ color: rgb(83, 139, 24);
/* oklch */ color: oklch(57.6% 0.152 133.0);

Tailwind

colors: {
  custom: {
    50: '#89ad60',
    500: '#538b18',
    950: '#000000',
  },
}

SCSS

$custom: #538b18;
$custom-light: #89ad60;
$custom-dark: #000000;

JSON

{
  "hex": "#538b18",
  "rgb": {
    "r": 83,
    "g": 139,
    "b": 24
  },
  "hsl": {
    "h": 89.217,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.57608,
    "c": 0.15229,
    "h": 133
  },
  "luminance": 0.2037
}

Semantic roles & 50–950 ramp

primary

#538B18

secondary

#7E40BE

accent

#3AED92

background

#F8FAF6

surface

#F0F4EB

border

#CBCEC6

text

#0C1005

muted

#7D7F7A

Preview Lab

Preview with #538B18

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

Preview Lab → · Contrast checker → · Palette generator →