#643F2B#643F2B

#643F2B is a dark, moderate orange. Relative luminance 0.064; OKLCH L 40.6% C 0.061 H 48.8°. Best body text is #FFFFFF at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#643F2B
RGB	rgb(100, 63, 43)
HSL	hsl(21, 40%, 28%)
HSV	hsv(21, 57%, 39%)
CMYK	cmyk(0%, 37%, 57%, 60.8%)
CIE-LAB	lab(30.50, 13.76, 18.87)
CIE-LCH	lch(30.50, 23.35, 53.90°)
OKLab	oklab(40.6% 0.04 0.0457)
OKLCH	oklch(40.6% 0.061 48.8)
XYZ	xyz(7.4695, 6.4394, 3.1346)
Luminance	0.0644 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F2B #2B5064

analogous

#642B33 #643F2B #645B2B

triadic

#643F2B #2B643F #3F2B64

tetradic

#643F2B #33642B #2B5064 #5B2B64

square

#643F2B #33642B #2B5064 #5B2B64

split-complementary

#643F2B #2B645B #2B3364

monochromatic

#150D09 #392419 #643F2B #8F5A3D #B57654

Accessibility & contrast

On white

9.18

#643F2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#643F2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F2B

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F2B	#FFFFFF	#000000	##FFFFFF
##643F2B	1.00	9.18	2.29	9.18
#FFFFFF	9.18	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#494329

Deuteranopia (green-blind)

#524B2B

Tritanopia (blue-blind)

#6D383A

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #643f2b;
/* rgb */ color: rgb(100, 63, 43);
/* oklch */ color: oklch(40.6% 0.061 48.8);

Tailwind

colors: {
  custom: {
    50: '#937464',
    500: '#643f2b',
    950: '#000000',
  },
}

SCSS

$custom: #643f2b;
$custom-light: #937464;
$custom-dark: #000000;

JSON

{
  "hex": "#643f2b",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 43
  },
  "hsl": {
    "h": 21.053,
    "s": 39.86,
    "l": 28.039
  },
  "oklch": {
    "l": 0.40596,
    "c": 0.06073,
    "h": 48.8
  },
  "luminance": 0.06439
}

Semantic roles & 50–950 ramp

primary

#643F2B

secondary

#557F96

accent

#A6D058

background

#F9F7F6

surface

#F2EDEB

border

#CCC8C6

text

#0D0805

muted

#7E7B7A

Preview Lab

Preview with #643F2B

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

Preview Lab → · Contrast checker → · Palette generator →