#636D18#636D18

#636D18 is a mid, moderate yellow. Relative luminance 0.137; OKLCH L 51.0% C 0.106 H 116.2°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#636D18
RGB	rgb(99, 109, 24)
HSL	hsl(67, 64%, 26%)
HSV	hsv(67, 78%, 43%)
CMYK	cmyk(9.2%, 0%, 78%, 57.3%)
CIE-LAB	lab(43.74, -15.46, 43.05)
CIE-LCH	lch(43.74, 45.74, 109.75°)
OKLab	oklab(50.97% -0.0468 0.095)
OKLCH	oklch(50.97% 0.106 116.2)
XYZ	xyz(10.7794, 13.6560, 2.9320)
Luminance	0.1366 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636D18 #22186D

analogous

#6D4C18 #636D18 #386D18

triadic

#636D18 #18636D #6D1863

tetradic

#636D18 #186D4C #22186D #6D1838

square

#636D18 #186D4C #22186D #6D1838

split-complementary

#636D18 #18386D #4C186D

monochromatic

#171906 #353B0D #636D18 #919F23 #BED12E

Accessibility & contrast

On white

5.63

#636D18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#636D18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636D18

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636D18	#FFFFFF	#000000	##FFFFFF
##636D18	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#756706

Deuteranopia (green-blind)

#74681F

Tritanopia (blue-blind)

#6A665D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #636d18;
/* rgb */ color: rgb(99, 109, 24);
/* oklch */ color: oklch(51.0% 0.106 116.2);

Tailwind

colors: {
  custom: {
    50: '#92965c',
    500: '#636d18',
    950: '#000000',
  },
}

SCSS

$custom: #636d18;
$custom-light: #92965c;
$custom-dark: #000000;

JSON

{
  "hex": "#636d18",
  "rgb": {
    "r": 99,
    "g": 109,
    "b": 24
  },
  "hsl": {
    "h": 67.059,
    "s": 63.91,
    "l": 26.078
  },
  "oklch": {
    "l": 0.50967,
    "c": 0.1059,
    "h": 116.2
  },
  "luminance": 0.13656
}

Semantic roles & 50–950 ramp

primary

#636D18

secondary

#4A3EA3

accent

#41E754

background

#F9F9F5

surface

#F2F2E9

border

#CCCCC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #636D18

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

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