#643B1B#643B1B

#643B1B is a dark, moderate orange. Relative luminance 0.059; OKLCH L 39.5% C 0.074 H 56.4°. Best body text is #FFFFFF at 9.62:1 contrast (WCAG AA passes).

Color values

HEX	#643B1B
RGB	rgb(100, 59, 27)
HSL	hsl(26, 57%, 25%)
HSV	hsv(26, 73%, 39%)
CMYK	cmyk(0%, 41%, 73%, 60.8%)
CIE-LAB	lab(29.20, 14.92, 26.90)
CIE-LCH	lch(29.20, 30.76, 60.98°)
OKLab	oklab(39.52% 0.0408 0.0613)
OKLCH	oklch(39.52% 0.074 56.4)
XYZ	xyz(7.0179, 5.9171, 1.8092)
Luminance	0.0592 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B1B #1B4464

analogous

#641B20 #643B1B #645F1B

triadic

#643B1B #1B643B #3B1B64

tetradic

#643B1B #20641B #1B4464 #5F1B64

square

#643B1B #20641B #1B4464 #5F1B64

split-complementary

#643B1B #1B645F #1B2064

monochromatic

#180E07 #341F0E #643B1B #945728 #C47435

Accessibility & contrast

On white

9.62

#643B1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#643B1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B1B

9.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B1B	#FFFFFF	#000000	##FFFFFF
##643B1B	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)

#473F18

Deuteranopia (green-blind)

#51481B

Tritanopia (blue-blind)

#6E3234

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643b1b;
/* rgb */ color: rgb(100, 59, 27);
/* oklch */ color: oklch(39.5% 0.074 56.4);

Tailwind

colors: {
  custom: {
    50: '#947159',
    500: '#643b1b',
    950: '#000000',
  },
}

SCSS

$custom: #643b1b;
$custom-light: #947159;
$custom-dark: #000000;

JSON

{
  "hex": "#643b1b",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 27
  },
  "hsl": {
    "h": 26.301,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.3952,
    "c": 0.07364,
    "h": 56.4
  },
  "luminance": 0.05916
}

Semantic roles & 50–950 ramp

primary

#643B1B

secondary

#417399

accent

#9DE147

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0703

muted

#7E7A78

Preview Lab

Preview with #643B1B

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

Preview Lab → · Contrast checker → · Palette generator →