#643C1C#643C1C

#643C1C is a dark, moderate orange. Relative luminance 0.060; OKLCH L 39.7% C 0.073 H 57.2°. Best body text is #FFFFFF at 9.52:1 contrast (WCAG AA passes).

Color values

HEX	#643C1C
RGB	rgb(100, 60, 28)
HSL	hsl(27, 56%, 25%)
HSV	hsv(27, 72%, 39%)
CMYK	cmyk(0%, 40%, 72%, 60.8%)
CIE-LAB	lab(29.48, 14.37, 26.64)
CIE-LCH	lch(29.48, 30.27, 61.65°)
OKLab	oklab(39.74% 0.0393 0.0609)
OKLCH	oklch(39.74% 0.073 57.2)
XYZ	xyz(7.0815, 6.0256, 1.8885)
Luminance	0.0602 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C1C #1C4464

analogous

#641C20 #643C1C #64601C

triadic

#643C1C #1C643C #3C1C64

tetradic

#643C1C #20641C #1C4464 #601C64

square

#643C1C #20641C #1C4464 #601C64

split-complementary

#643C1C #1C6460 #1C2064

monochromatic

#180E07 #341F0F #643C1C #945929 #C47537

Accessibility & contrast

On white

9.52

#643C1C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#643C1C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C1C

9.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C1C	#FFFFFF	#000000	##FFFFFF
##643C1C	1.00	9.52	2.21	9.52
#FFFFFF	9.52	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#484019

Deuteranopia (green-blind)

#51491C

Tritanopia (blue-blind)

#6E3435

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643c1c;
/* rgb */ color: rgb(100, 60, 28);
/* oklch */ color: oklch(39.7% 0.073 57.2);

Tailwind

colors: {
  custom: {
    50: '#947259',
    500: '#643c1c',
    950: '#000000',
  },
}

SCSS

$custom: #643c1c;
$custom-light: #947259;
$custom-dark: #000000;

JSON

{
  "hex": "#643c1c",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 28
  },
  "hsl": {
    "h": 26.667,
    "s": 56.25,
    "l": 25.098
  },
  "oklch": {
    "l": 0.39736,
    "c": 0.07253,
    "h": 57.2
  },
  "luminance": 0.06025
}

Semantic roles & 50–950 ramp

primary

#643C1C

secondary

#437399

accent

#9CE048

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0803

muted

#7E7B78

Preview Lab

Preview with #643C1C

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

Preview Lab → · Contrast checker → · Palette generator →