#63641B#63641B

#63641B is a mid, moderate yellow. Relative luminance 0.118; OKLCH L 48.8% C 0.093 H 110.2°. Best body text is #FFFFFF at 6.23:1 contrast (WCAG AA passes).

Color values

HEX	#63641B
RGB	rgb(99, 100, 27)
HSL	hsl(61, 57%, 25%)
HSV	hsv(61, 73%, 39%)
CMYK	cmyk(1%, 0%, 73%, 60.8%)
CIE-LAB	lab(40.97, -10.30, 39.18)
CIE-LCH	lch(40.97, 40.51, 104.73°)
OKLab	oklab(48.76% -0.0321 0.0874)
OKLCH	oklch(48.76% 0.093 110.2)
XYZ	xyz(9.9009, 11.8464, 2.8017)
Luminance	0.1185 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#63641B #1C1B64

analogous

#64411B #63641B #3F641B

triadic

#63641B #1B6364 #641B63

tetradic

#63641B #1B6441 #1C1B64 #641B3F

square

#63641B #1B6441 #1C1B64 #641B3F

split-complementary

#63641B #1B3F64 #411B64

monochromatic

#181807 #33340E #63641B #939428 #C2C435

Accessibility & contrast

On white

6.23

#63641B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#63641B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #63641B

6.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##63641B	#FFFFFF	#000000	##FFFFFF
##63641B	1.00	6.23	3.37	6.23
#FFFFFF	6.23	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C5F0F

Deuteranopia (green-blind)

#6D6220

Tritanopia (blue-blind)

#6A5D56

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #63641b;
/* rgb */ color: rgb(99, 100, 27);
/* oklch */ color: oklch(48.8% 0.093 110.2);

Tailwind

colors: {
  custom: {
    50: '#92905d',
    500: '#63641b',
    950: '#000000',
  },
}

SCSS

$custom: #63641b;
$custom-light: #92905d;
$custom-dark: #000000;

JSON

{
  "hex": "#63641b",
  "rgb": {
    "r": 99,
    "g": 100,
    "b": 27
  },
  "hsl": {
    "h": 60.822,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.48759,
    "c": 0.09314,
    "h": 110.2
  },
  "luminance": 0.11846
}

Semantic roles & 50–950 ramp

primary

#63641B

secondary

#434199

accent

#47E149

background

#F9F8F5

surface

#F1F0E9

border

#CBCBC5

text

#0D0C04

muted

#7E7D79

Preview Lab

Preview with #63641B

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

Preview Lab → · Contrast checker → · Palette generator →