#643B1C#643B1C

#643B1C is a dark, moderate orange. Relative luminance 0.059; OKLCH L 39.5% C 0.073 H 55.7°. Best body text is #FFFFFF at 9.61:1 contrast (WCAG AA passes).

Color values

HEX	#643B1C
RGB	rgb(100, 59, 28)
HSL	hsl(26, 56%, 25%)
HSV	hsv(26, 72%, 39%)
CMYK	cmyk(0%, 41%, 72%, 60.8%)
CIE-LAB	lab(29.21, 14.99, 26.34)
CIE-LCH	lch(29.21, 30.31, 60.36°)
OKLab	oklab(39.53% 0.0412 0.0603)
OKLCH	oklch(39.53% 0.073 55.7)
XYZ	xyz(7.0296, 5.9218, 1.8712)
Luminance	0.0592 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B1C #1C4564

analogous

#641C21 #643B1C #645F1C

triadic

#643B1C #1C643B #3B1C64

tetradic

#643B1C #21641C #1C4564 #5F1C64

square

#643B1C #21641C #1C4564 #5F1C64

split-complementary

#643B1C #1C645F #1C2164

monochromatic

#180E07 #341F0F #643B1C #945729 #C47337

Accessibility & contrast

On white

9.61

#643B1C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#643B1C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B1C

9.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B1C	#FFFFFF	#000000	##FFFFFF
##643B1C	1.00	9.61	2.18	9.61
#FFFFFF	9.61	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#473F19

Deuteranopia (green-blind)

#51481C

Tritanopia (blue-blind)

#6E3234

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643b1c;
/* rgb */ color: rgb(100, 59, 28);
/* oklch */ color: oklch(39.5% 0.073 55.7);

Tailwind

colors: {
  custom: {
    50: '#947159',
    500: '#643b1c',
    950: '#000000',
  },
}

SCSS

$custom: #643b1c;
$custom-light: #947159;
$custom-dark: #000000;

JSON

{
  "hex": "#643b1c",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 28
  },
  "hsl": {
    "h": 25.833,
    "s": 56.25,
    "l": 25.098
  },
  "oklch": {
    "l": 0.39533,
    "c": 0.07303,
    "h": 55.7
  },
  "luminance": 0.05921
}

Semantic roles & 50–950 ramp

primary

#643B1C

secondary

#437499

accent

#9EE048

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0703

muted

#7E7A78

Preview Lab

Preview with #643B1C

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

Preview Lab → · Contrast checker → · Palette generator →