#643B2B#643B2B

#643B2B is a dark, moderate orange. Relative luminance 0.060; OKLCH L 39.8% C 0.064 H 41.9°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#643B2B
RGB	rgb(100, 59, 43)
HSL	hsl(17, 40%, 28%)
HSV	hsv(17, 57%, 39%)
CMYK	cmyk(0%, 41%, 57%, 60.8%)
CIE-LAB	lab(29.44, 16.23, 17.52)
CIE-LCH	lch(29.44, 23.88, 47.19°)
OKLab	oklab(39.78% 0.0475 0.0427)
OKLCH	oklch(39.78% 0.064 41.9)
XYZ	xyz(7.2560, 6.0123, 3.0634)
Luminance	0.0601 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B2B #2B5464

analogous

#642B37 #643B2B #64572B

triadic

#643B2B #2B643B #3B2B64

tetradic

#643B2B #37642B #2B5464 #572B64

square

#643B2B #37642B #2B5464 #572B64

split-complementary

#643B2B #2B6457 #2B3764

monochromatic

#150D09 #392219 #643B2B #8F543D #B56F54

Accessibility & contrast

On white

9.54

#643B2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#643B2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B2B

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B2B	#FFFFFF	#000000	##FFFFFF
##643B2B	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#46402A

Deuteranopia (green-blind)

#4F492B

Tritanopia (blue-blind)

#6D3437

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643b2b;
/* rgb */ color: rgb(100, 59, 43);
/* oklch */ color: oklch(39.8% 0.064 41.9);

Tailwind

colors: {
  custom: {
    50: '#937164',
    500: '#643b2b',
    950: '#000000',
  },
}

SCSS

$custom: #643b2b;
$custom-light: #937164;
$custom-dark: #000000;

JSON

{
  "hex": "#643b2b",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 43
  },
  "hsl": {
    "h": 16.842,
    "s": 39.86,
    "l": 28.039
  },
  "oklch": {
    "l": 0.39784,
    "c": 0.06381,
    "h": 41.9
  },
  "luminance": 0.06012
}

Semantic roles & 50–950 ramp

primary

#643B2B

secondary

#558496

accent

#AED058

background

#F9F6F6

surface

#F2ECEB

border

#CCC7C6

text

#0D0705

muted

#7E7A7A

Preview Lab

Preview with #643B2B

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

Preview Lab → · Contrast checker → · Palette generator →