#643F1B#643F1B

#643F1B is a dark, moderate orange. Relative luminance 0.063; OKLCH L 40.3% C 0.072 H 62.4°. Best body text is #FFFFFF at 9.26:1 contrast (WCAG AA passes).

Color values

HEX	#643F1B
RGB	rgb(100, 63, 27)
HSL	hsl(30, 57%, 25%)
HSV	hsv(30, 73%, 39%)
CMYK	cmyk(0%, 37%, 73%, 60.8%)
CIE-LAB	lab(30.26, 12.45, 28.07)
CIE-LCH	lch(30.26, 30.71, 66.08°)
OKLab	oklab(40.34% 0.0334 0.0638)
OKLCH	oklch(40.34% 0.072 62.4)
XYZ	xyz(7.2314, 6.3441, 1.8804)
Luminance	0.0634 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F1B #1B4064

analogous

#641B1C #643F1B #64631B

triadic

#643F1B #1B643F #3F1B64

tetradic

#643F1B #1C641B #1B4064 #631B64

square

#643F1B #1C641B #1B4064 #631B64

split-complementary

#643F1B #1B6463 #1B1C64

monochromatic

#180F07 #34210E #643F1B #945D28 #C47C35

Accessibility & contrast

On white

9.26

#643F1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#643F1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F1B

9.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F1B	#FFFFFF	#000000	##FFFFFF
##643F1B	1.00	9.26	2.27	9.26
#FFFFFF	9.26	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B4217

Deuteranopia (green-blind)

#534B1B

Tritanopia (blue-blind)

#6D3737

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #643f1b;
/* rgb */ color: rgb(100, 63, 27);
/* oklch */ color: oklch(40.3% 0.072 62.4);

Tailwind

colors: {
  custom: {
    50: '#947459',
    500: '#643f1b',
    950: '#000000',
  },
}

SCSS

$custom: #643f1b;
$custom-light: #947459;
$custom-dark: #000000;

JSON

{
  "hex": "#643f1b",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 27
  },
  "hsl": {
    "h": 29.589,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.40343,
    "c": 0.07204,
    "h": 62.4
  },
  "luminance": 0.06343
}

Semantic roles & 50–950 ramp

primary

#643F1B

secondary

#416E99

accent

#95E147

background

#F9F7F5

surface

#F2EDE9

border

#CCC8C5

text

#0E0803

muted

#7E7B78

Preview Lab

Preview with #643F1B

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

Preview Lab → · Contrast checker → · Palette generator →