#643F1C#643F1C

#643F1C is a dark, moderate orange. Relative luminance 0.063; OKLCH L 40.4% C 0.071 H 61.7°. Best body text is #FFFFFF at 9.25:1 contrast (WCAG AA passes).

Color values

HEX	#643F1C
RGB	rgb(100, 63, 28)
HSL	hsl(29, 56%, 25%)
HSV	hsv(29, 72%, 39%)
CMYK	cmyk(0%, 37%, 72%, 60.8%)
CIE-LAB	lab(30.28, 12.52, 27.53)
CIE-LCH	lch(30.28, 30.24, 65.55°)
OKLab	oklab(40.36% 0.0338 0.0629)
OKLCH	oklch(40.36% 0.071 61.7)
XYZ	xyz(7.2432, 6.3488, 1.9424)
Luminance	0.0635 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F1C #1C4164

analogous

#641C1D #643F1C #64631C

triadic

#643F1C #1C643F #3F1C64

tetradic

#643F1C #1D641C #1C4164 #631C64

square

#643F1C #1D641C #1C4164 #631C64

split-complementary

#643F1C #1C6463 #1C1D64

monochromatic

#180F07 #34210F #643F1C #945D29 #C47B37

Accessibility & contrast

On white

9.25

#643F1C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#643F1C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F1C

9.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F1C	#FFFFFF	#000000	##FFFFFF
##643F1C	1.00	9.25	2.27	9.25
#FFFFFF	9.25	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A4218

Deuteranopia (green-blind)

#534B1C

Tritanopia (blue-blind)

#6D3737

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #643f1c;
/* rgb */ color: rgb(100, 63, 28);
/* oklch */ color: oklch(40.4% 0.071 61.7);

Tailwind

colors: {
  custom: {
    50: '#94745a',
    500: '#643f1c',
    950: '#000000',
  },
}

SCSS

$custom: #643f1c;
$custom-light: #94745a;
$custom-dark: #000000;

JSON

{
  "hex": "#643f1c",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 28
  },
  "hsl": {
    "h": 29.167,
    "s": 56.25,
    "l": 25.098
  },
  "oklch": {
    "l": 0.40355,
    "c": 0.07136,
    "h": 61.7
  },
  "luminance": 0.06348
}

Semantic roles & 50–950 ramp

primary

#643F1C

secondary

#436F99

accent

#96E048

background

#F9F7F5

surface

#F2EDE9

border

#CCC8C5

text

#0E0804

muted

#7E7B79

Preview Lab

Preview with #643F1C

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

Preview Lab → · Contrast checker → · Palette generator →