#636B15#636B15

#636B15 is a mid, moderate yellow. Relative luminance 0.132; OKLCH L 50.4% C 0.105 H 115.0°. Best body text is #FFFFFF at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#636B15
RGB	rgb(99, 107, 21)
HSL	hsl(66, 67%, 25%)
HSV	hsv(66, 80%, 42%)
CMYK	cmyk(7.5%, 0%, 80.4%, 58%)
CIE-LAB	lab(43.10, -14.52, 43.52)
CIE-LCH	lch(43.10, 45.88, 108.45°)
OKLab	oklab(50.45% -0.0445 0.0954)
OKLCH	oklch(50.45% 0.105 115)
XYZ	xyz(10.5389, 13.2224, 2.7063)
Luminance	0.1322 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#636B15 #1D156B

analogous

#6B4815 #636B15 #386B15

triadic

#636B15 #15636B #6B1563

tetradic

#636B15 #156B48 #1D156B #6B1538

square

#636B15 #156B48 #1D156B #6B1538

split-complementary

#636B15 #15386B #48156B

monochromatic

#181A05 #34380B #636B15 #929E1F #C2D129

Accessibility & contrast

On white

5.76

#636B15 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#636B15 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #636B15

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##636B15	#FFFFFF	#000000	##FFFFFF
##636B15	1.00	5.76	3.64	5.76
#FFFFFF	5.76	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#736501

Deuteranopia (green-blind)

#73661D

Tritanopia (blue-blind)

#6A645B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #636b15;
/* rgb */ color: rgb(99, 107, 21);
/* oklch */ color: oklch(50.4% 0.105 115.0);

Tailwind

colors: {
  custom: {
    50: '#92955b',
    500: '#636b15',
    950: '#000000',
  },
}

SCSS

$custom: #636b15;
$custom-light: #92955b;
$custom-dark: #000000;

JSON

{
  "hex": "#636b15",
  "rgb": {
    "r": 99,
    "g": 107,
    "b": 21
  },
  "hsl": {
    "h": 65.581,
    "s": 67.188,
    "l": 25.098
  },
  "oklch": {
    "l": 0.50448,
    "c": 0.10528,
    "h": 115
  },
  "luminance": 0.13222
}

Semantic roles & 50–950 ramp

primary

#636B15

secondary

#443AA2

accent

#3EEA4E

background

#F9F9F5

surface

#F2F1E9

border

#CCCBC5

text

#0D0D04

muted

#7E7E79

Preview Lab

Preview with #636B15

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

Preview Lab → · Contrast checker → · Palette generator →