#673B40#673B40

#673B40 is a dark, moderate red. Relative luminance 0.064; OKLCH L 40.7% C 0.062 H 12.9°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#673B40
RGB	rgb(103, 59, 64)
HSL	hsl(353, 27%, 32%)
HSV	hsv(353, 43%, 40%)
CMYK	cmyk(0%, 42.7%, 37.9%, 59.6%)
CIE-LAB	lab(30.36, 20.06, 5.30)
CIE-LCH	lch(30.36, 20.75, 14.81°)
OKLab	oklab(40.74% 0.0608 0.0139)
OKLCH	oklch(40.74% 0.062 12.9)
XYZ	xyz(8.0832, 6.3823, 5.6557)
Luminance	0.0638 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#673B40 #3B6762

analogous

#673B56 #673B40 #674C3B

triadic

#673B40 #40673B #3B4067

tetradic

#673B40 #56673B #3B6762 #4C3B67

square

#673B40 #56673B #3B6762 #4C3B67

split-complementary

#673B40 #3B674C #3B5667

monochromatic

#190E10 #402528 #673B40 #8E5158 #AD7077

Accessibility & contrast

On white

9.23

#673B40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#673B40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #673B40

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##673B40	#FFFFFF	#000000	##FFFFFF
##673B40	1.00	9.23	2.28	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#434240

Deuteranopia (green-blind)

#4E4B3F

Tritanopia (blue-blind)

#6F373D

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #673b40;
/* rgb */ color: rgb(103, 59, 64);
/* oklch */ color: oklch(40.7% 0.062 12.9);

Tailwind

colors: {
  custom: {
    50: '#947174',
    500: '#673b40',
    950: '#000000',
  },
}

SCSS

$custom: #673b40;
$custom-light: #947174;
$custom-dark: #000000;

JSON

{
  "hex": "#673b40",
  "rgb": {
    "r": 103,
    "g": 59,
    "b": 64
  },
  "hsl": {
    "h": 353.182,
    "s": 27.16,
    "l": 31.765
  },
  "oklch": {
    "l": 0.40735,
    "c": 0.0624,
    "h": 12.9
  },
  "luminance": 0.06382
}

Semantic roles & 50–950 ramp

primary

#673B40

secondary

#679792

accent

#C3B964

background

#F9F6F7

surface

#F2ECED

border

#CCC7C8

text

#0D0808

muted

#7E7B7B

Preview Lab

Preview with #673B40

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

Preview Lab → · Contrast checker → · Palette generator →