#673B33#673B33

#673B33 is a dark, moderate red. Relative luminance 0.063; OKLCH L 40.4% C 0.064 H 31.1°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#673B33
RGB	rgb(103, 59, 51)
HSL	hsl(9, 34%, 30%)
HSV	hsv(9, 50%, 40%)
CMYK	cmyk(0%, 42.7%, 50.5%, 59.6%)
CIE-LAB	lab(30.04, 18.43, 13.28)
CIE-LCH	lch(30.04, 22.72, 35.78°)
OKLab	oklab(40.39% 0.055 0.0332)
OKLCH	oklch(40.39% 0.064 31.1)
XYZ	xyz(7.7555, 6.2512, 3.9295)
Luminance	0.0625 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#673B33 #335F67

analogous

#673345 #673B33 #675533

triadic

#673B33 #33673B #3B3367

tetradic

#673B33 #456733 #335F67 #553367

square

#673B33 #456733 #335F67 #553367

split-complementary

#673B33 #336755 #334567

monochromatic

#150C0A #3E241F #673B33 #905247 #B26F63

Accessibility & contrast

On white

9.33

#673B33 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#673B33 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #673B33

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##673B33	#FFFFFF	#000000	##FFFFFF
##673B33	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#454132

Deuteranopia (green-blind)

#504A32

Tritanopia (blue-blind)

#703439

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #673b33;
/* rgb */ color: rgb(103, 59, 51);
/* oklch */ color: oklch(40.4% 0.064 31.1);

Tailwind

colors: {
  custom: {
    50: '#95716a',
    500: '#673b33',
    950: '#000000',
  },
}

SCSS

$custom: #673b33;
$custom-light: #95716a;
$custom-dark: #000000;

JSON

{
  "hex": "#673b33",
  "rgb": {
    "r": 103,
    "g": 59,
    "b": 51
  },
  "hsl": {
    "h": 9.231,
    "s": 33.766,
    "l": 30.196
  },
  "oklch": {
    "l": 0.40385,
    "c": 0.06421,
    "h": 31.1
  },
  "luminance": 0.06251
}

Semantic roles & 50–950 ramp

primary

#673B33

secondary

#5E8F98

accent

#B9CA5E

background

#F9F6F6

surface

#F2ECEB

border

#CCC7C6

text

#0D0806

muted

#7E7B7A

Preview Lab

Preview with #673B33

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

Preview Lab → · Contrast checker → · Palette generator →