#643B1D#643B1D

#643B1D is a dark, moderate orange. Relative luminance 0.059; OKLCH L 39.5% C 0.072 H 55.0°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#643B1D
RGB	rgb(100, 59, 29)
HSL	hsl(25, 55%, 25%)
HSV	hsv(25, 71%, 39%)
CMYK	cmyk(0%, 41%, 71%, 60.8%)
CIE-LAB	lab(29.23, 15.06, 25.78)
CIE-LCH	lch(29.23, 29.86, 59.72°)
OKLab	oklab(39.55% 0.0416 0.0593)
OKLCH	oklch(39.55% 0.072 55)
XYZ	xyz(7.0418, 5.9267, 1.9353)
Luminance	0.0593 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B1D #1D4664

analogous

#641D22 #643B1D #645E1D

triadic

#643B1D #1D643B #3B1D64

tetradic

#643B1D #22641D #1D4664 #5E1D64

square

#643B1D #22641D #1D4664 #5E1D64

split-complementary

#643B1D #1D645E #1D2264

monochromatic

#180E07 #351F0F #643B1D #93572B #C37339

Accessibility & contrast

On white

9.61

#643B1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#643B1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B1D

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B1D	#FFFFFF	#000000	##FFFFFF
##643B1D	1.00	9.61	2.19	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#473F1A

Deuteranopia (green-blind)

#51481D

Tritanopia (blue-blind)

#6E3334

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643b1d;
/* rgb */ color: rgb(100, 59, 29);
/* oklch */ color: oklch(39.5% 0.072 55.0);

Tailwind

colors: {
  custom: {
    50: '#94715a',
    500: '#643b1d',
    950: '#000000',
  },
}

SCSS

$custom: #643b1d;
$custom-light: #94715a;
$custom-dark: #000000;

JSON

{
  "hex": "#643b1d",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 29
  },
  "hsl": {
    "h": 25.352,
    "s": 55.039,
    "l": 25.294
  },
  "oklch": {
    "l": 0.39547,
    "c": 0.0724,
    "h": 55
  },
  "luminance": 0.05926
}

Semantic roles & 50–950 ramp

primary

#643B1D

secondary

#447599

accent

#9FDE49

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0704

muted

#7E7A79

Preview Lab

Preview with #643B1D

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

Preview Lab → · Contrast checker → · Palette generator →