#643F28#643F28

#643F28 is a dark, moderate orange. Relative luminance 0.064; OKLCH L 40.5% C 0.063 H 52.0°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#643F28
RGB	rgb(100, 63, 40)
HSL	hsl(23, 43%, 27%)
HSV	hsv(23, 60%, 39%)
CMYK	cmyk(0%, 37%, 60%, 60.8%)
CIE-LAB	lab(30.44, 13.47, 20.66)
CIE-LCH	lch(30.44, 24.66, 56.89°)
OKLab	oklab(40.54% 0.0387 0.0495)
OKLCH	oklch(40.54% 0.063 52)
XYZ	xyz(7.4165, 6.4182, 2.8553)
Luminance	0.0642 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F28 #284D64

analogous

#64282F #643F28 #645D28

triadic

#643F28 #28643F #3F2864

tetradic

#643F28 #2F6428 #284D64 #5D2864

square

#643F28 #2F6428 #284D64 #5D2864

split-complementary

#643F28 #28645D #282F64

monochromatic

#160E09 #382317 #643F28 #905B39 #B8774E

Accessibility & contrast

On white

9.20

#643F28 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#643F28 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F28

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F28	#FFFFFF	#000000	##FFFFFF
##643F28	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#494326

Deuteranopia (green-blind)

#524B28

Tritanopia (blue-blind)

#6D3839

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #643f28;
/* rgb */ color: rgb(100, 63, 40);
/* oklch */ color: oklch(40.5% 0.063 52.0);

Tailwind

colors: {
  custom: {
    50: '#937462',
    500: '#643f28',
    950: '#000000',
  },
}

SCSS

$custom: #643f28;
$custom-light: #937462;
$custom-dark: #000000;

JSON

{
  "hex": "#643f28",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 40
  },
  "hsl": {
    "h": 23,
    "s": 42.857,
    "l": 27.451
  },
  "oklch": {
    "l": 0.4054,
    "c": 0.06279,
    "h": 52
  },
  "luminance": 0.06418
}

Semantic roles & 50–950 ramp

primary

#643F28

secondary

#517C97

accent

#A3D355

background

#F9F7F5

surface

#F2EDEA

border

#CCC8C6

text

#0D0805

muted

#7E7B79

Preview Lab

Preview with #643F28

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

Preview Lab → · Contrast checker → · Palette generator →