#643B1A#643B1A

#643B1A is a dark, moderate orange. Relative luminance 0.059; OKLCH L 39.5% C 0.074 H 57.0°. Best body text is #FFFFFF at 9.62:1 contrast (WCAG AA passes).

Color values

HEX	#643B1A
RGB	rgb(100, 59, 26)
HSL	hsl(27, 59%, 25%)
HSV	hsv(27, 74%, 39%)
CMYK	cmyk(0%, 41%, 74%, 60.8%)
CIE-LAB	lab(29.19, 14.86, 27.45)
CIE-LCH	lch(29.19, 31.21, 61.57°)
OKLab	oklab(39.51% 0.0404 0.0623)
OKLCH	oklch(39.51% 0.074 57)
XYZ	xyz(7.0065, 5.9125, 1.7493)
Luminance	0.0591 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B1A #1A4364

analogous

#641A1E #643B1A #64601A

triadic

#643B1A #1A643B #3B1A64

tetradic

#643B1A #1E641A #1A4364 #601A64

square

#643B1A #1E641A #1A4364 #601A64

split-complementary

#643B1A #1A6460 #1A1E64

monochromatic

#180E06 #331E0D #643B1A #955827 #C57433

Accessibility & contrast

On white

9.62

#643B1A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#643B1A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B1A

9.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B1A	#FFFFFF	#000000	##FFFFFF
##643B1A	1.00	9.62	2.18	9.62
#FFFFFF	9.62	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#473F16

Deuteranopia (green-blind)

#51481A

Tritanopia (blue-blind)

#6E3234

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643b1a;
/* rgb */ color: rgb(100, 59, 26);
/* oklch */ color: oklch(39.5% 0.074 57.0);

Tailwind

colors: {
  custom: {
    50: '#947158',
    500: '#643b1a',
    950: '#000000',
  },
}

SCSS

$custom: #643b1a;
$custom-light: #947158;
$custom-dark: #000000;

JSON

{
  "hex": "#643b1a",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 26
  },
  "hsl": {
    "h": 26.757,
    "s": 58.73,
    "l": 24.706
  },
  "oklch": {
    "l": 0.39508,
    "c": 0.07427,
    "h": 57
  },
  "luminance": 0.05912
}

Semantic roles & 50–950 ramp

primary

#643B1A

secondary

#40729A

accent

#9CE246

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0703

muted

#7E7A78

Preview Lab

Preview with #643B1A

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

Preview Lab → · Contrast checker → · Palette generator →