#731B23#731B23

#731B23 is a dark, vivid red. Relative luminance 0.045; OKLCH L 37.2% C 0.121 H 20.6°. Best body text is #FFFFFF at 10.99:1 contrast (WCAG AA passes).

Color values

HEX	#731B23
RGB	rgb(115, 27, 35)
HSL	hsl(355, 62%, 28%)
HSV	hsv(355, 77%, 45%)
CMYK	cmyk(0%, 76.5%, 69.6%, 54.9%)
CIE-LAB	lab(25.42, 38.45, 18.12)
CIE-LCH	lch(25.42, 42.51, 25.23°)
OKLab	oklab(37.2% 0.1135 0.0428)
OKLCH	oklch(37.2% 0.121 20.6)
XYZ	xyz(7.7664, 4.5512, 2.0593)
Luminance	0.0455 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#731B23 #1B736B

analogous

#731B4F #731B23 #733F1B

triadic

#731B23 #23731B #1B2373

tetradic

#731B23 #4F731B #1B736B #3F1B73

square

#731B23 #4F731B #1B736B #3F1B73

split-complementary

#731B23 #1B733F #1B4F73

monochromatic

#190608 #410F14 #731B23 #A52732 #D03846

Accessibility & contrast

On white

10.99

#731B23 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#731B23 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #731B23

10.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##731B23	#FFFFFF	#000000	##FFFFFF
##731B23	1.00	10.99	1.91	10.99
#FFFFFF	10.99	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	10.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343023

Deuteranopia (green-blind)

#4A4320

Tritanopia (blue-blind)

#7F001F

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #731b23;
/* rgb */ color: rgb(115, 27, 35);
/* oklch */ color: oklch(37.2% 0.121 20.6);

Tailwind

colors: {
  custom: {
    50: '#a25f5d',
    500: '#731b23',
    950: '#000000',
  },
}

SCSS

$custom: #731b23;
$custom-light: #a25f5d;
$custom-dark: #000000;

JSON

{
  "hex": "#731b23",
  "rgb": {
    "r": 115,
    "g": 27,
    "b": 35
  },
  "hsl": {
    "h": 354.545,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.37197,
    "c": 0.12132,
    "h": 20.6
  },
  "luminance": 0.0455
}

Semantic roles & 50–950 ramp

primary

#731B23

secondary

#42A89E

accent

#E5D643

background

#FAF5F5

surface

#F4EAE9

border

#CEC6C5

text

#100504

muted

#7F7979

Preview Lab

Preview with #731B23

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

Preview Lab → · Contrast checker → · Palette generator →