#818B18#818B18

#818B18 is a mid, vivid yellow. Relative luminance 0.232; OKLCH L 60.8% C 0.130 H 114.9°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#818B18
RGB	rgb(129, 139, 24)
HSL	hsl(65, 71%, 32%)
HSV	hsv(65, 83%, 55%)
CMYK	cmyk(7.2%, 0%, 82.7%, 45.5%)
CIE-LAB	lab(55.28, -17.71, 54.42)
CIE-LCH	lch(55.28, 57.23, 108.03°)
OKLab	oklab(60.84% -0.0547 0.118)
OKLCH	oklch(60.84% 0.13 114.9)
XYZ	xyz(18.4513, 23.1987, 4.3698)
Luminance	0.2320 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#818B18 #22188B

analogous

#8B5B18 #818B18 #488B18

triadic

#818B18 #18818B #8B1881

tetradic

#818B18 #188B5B #22188B #8B1848

square

#818B18 #188B5B #22188B #8B1848

split-complementary

#818B18 #18488B #5B188B

monochromatic

#202306 #51570F #818B18 #B1BF21 #D0DE3F

Accessibility & contrast

On white

3.72

#818B18 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#818B18 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #818B18

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##818B18	#FFFFFF	#000000	##000000
##818B18	1.00	3.72	5.64	5.64
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#968400

Deuteranopia (green-blind)

#958524

Tritanopia (blue-blind)

#8A8276

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #818b18;
/* rgb */ color: rgb(129, 139, 24);
/* oklch */ color: oklch(60.8% 0.130 114.9);

Tailwind

colors: {
  custom: {
    50: '#a9ac61',
    500: '#818b18',
    950: '#000000',
  },
}

SCSS

$custom: #818b18;
$custom-light: #a9ac61;
$custom-dark: #000000;

JSON

{
  "hex": "#818b18",
  "rgb": {
    "r": 129,
    "g": 139,
    "b": 24
  },
  "hsl": {
    "h": 65.217,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.6084,
    "c": 0.1301,
    "h": 114.9
  },
  "luminance": 0.23198
}

Semantic roles & 50–950 ramp

primary

#818B18

secondary

#4B40BE

accent

#3AED4A

background

#FAFAF6

surface

#F4F4EB

border

#CECEC6

text

#101005

muted

#7F7F7A

Preview Lab

Preview with #818B18

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

Preview Lab → · Contrast checker → · Palette generator →