#636818#636818

#636818 is a mid, moderate yellow. Relative luminance 0.126; OKLCH L 49.7% C 0.100 H 113.1°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#636818
RGB	rgb(99, 104, 24)
HSL	hsl(64, 63%, 25%)
HSV	hsv(64, 77%, 41%)
CMYK	cmyk(4.8%, 0%, 76.9%, 59.2%)
CIE-LAB	lab(42.18, -12.71, 41.57)
CIE-LCH	lch(42.18, 43.47, 107.01°)
OKLab	oklab(49.72% -0.0392 0.0919)
OKLCH	oklch(49.72% 0.1 113.1)
XYZ	xyz(10.2611, 12.6195, 2.7592)
Luminance	0.1262 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636818 #1D1868

analogous

#684518 #636818 #3B6818

triadic

#636818 #186368 #681863

tetradic

#636818 #186845 #1D1868 #68183B

square

#636818 #186845 #1D1868 #68183B

split-complementary

#636818 #183B68 #451868

monochromatic

#181906 #34360D #636818 #929A23 #C2CB2F

Accessibility & contrast

On white

5.96

#636818 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#636818 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636818

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636818	#FFFFFF	#000000	##FFFFFF
##636818	1.00	5.96	3.52	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#706308

Deuteranopia (green-blind)

#70641E

Tritanopia (blue-blind)

#6A6159

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #636818;
/* rgb */ color: rgb(99, 104, 24);
/* oklch */ color: oklch(49.7% 0.100 113.1);

Tailwind

colors: {
  custom: {
    50: '#92935c',
    500: '#636818',
    950: '#000000',
  },
}

SCSS

$custom: #636818;
$custom-light: #92935c;
$custom-dark: #000000;

JSON

{
  "hex": "#636818",
  "rgb": {
    "r": 99,
    "g": 104,
    "b": 24
  },
  "hsl": {
    "h": 63.75,
    "s": 62.5,
    "l": 25.098
  },
  "oklch": {
    "l": 0.49723,
    "c": 0.09988,
    "h": 113.1
  },
  "luminance": 0.12619
}

Semantic roles & 50–950 ramp

primary

#636818

secondary

#443E9E

accent

#42E64C

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #636818

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

Preview Lab → · Contrast checker → · Palette generator →