#673D37#673D37

#673D37 is a dark, moderate red. Relative luminance 0.065; OKLCH L 40.9% C 0.061 H 28.7°. Best body text is #FFFFFF at 9.13:1 contrast (WCAG AA passes).

Color values

HEX	#673D37
RGB	rgb(103, 61, 55)
HSL	hsl(8, 30%, 31%)
HSV	hsv(8, 47%, 40%)
CMYK	cmyk(0%, 40.8%, 46.6%, 59.6%)
CIE-LAB	lab(30.63, 17.67, 11.52)
CIE-LCH	lch(30.63, 21.10, 33.09°)
OKLab	oklab(40.87% 0.0531 0.0291)
OKLCH	oklch(40.87% 0.061 28.7)
XYZ	xyz(7.9523, 6.4976, 4.4490)
Luminance	0.0650 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#673D37 #376167

analogous

#673749 #673D37 #675537

triadic

#673D37 #37673D #3D3767

tetradic

#673D37 #496737 #376167 #553767

square

#673D37 #496737 #376167 #553767

split-complementary

#673D37 #376755 #374967

monochromatic

#170E0C #3F2522 #673D37 #8F554C #AF7269

Accessibility & contrast

On white

9.13

#673D37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#673D37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #673D37

9.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##673D37	#FFFFFF	#000000	##FFFFFF
##673D37	1.00	9.13	2.30	9.13
#FFFFFF	9.13	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#464336

Deuteranopia (green-blind)

#514B36

Tritanopia (blue-blind)

#6F373C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #673d37;
/* rgb */ color: rgb(103, 61, 55);
/* oklch */ color: oklch(40.9% 0.061 28.7);

Tailwind

colors: {
  custom: {
    50: '#94736d',
    500: '#673d37',
    950: '#000000',
  },
}

SCSS

$custom: #673d37;
$custom-light: #94736d;
$custom-dark: #000000;

JSON

{
  "hex": "#673d37",
  "rgb": {
    "r": 103,
    "g": 61,
    "b": 55
  },
  "hsl": {
    "h": 7.5,
    "s": 30.38,
    "l": 30.98
  },
  "oklch": {
    "l": 0.40873,
    "c": 0.06053,
    "h": 28.7
  },
  "luminance": 0.06497
}

Semantic roles & 50–950 ramp

primary

#673D37

secondary

#629197

accent

#BAC761

background

#F9F7F6

surface

#F2EDEB

border

#CCC8C6

text

#0D0807

muted

#7E7B7A

Preview Lab

Preview with #673D37

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

Preview Lab → · Contrast checker → · Palette generator →