#731D17#731D17

#731D17 is a dark, vivid red. Relative luminance 0.046; OKLCH L 37.2% C 0.121 H 28.4°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#731D17
RGB	rgb(115, 29, 23)
HSL	hsl(4, 67%, 27%)
HSV	hsv(4, 80%, 45%)
CMYK	cmyk(0%, 74.8%, 80%, 54.9%)
CIE-LAB	lab(25.52, 37.04, 25.97)
CIE-LCH	lch(25.52, 45.24, 35.04°)
OKLab	oklab(37.22% 0.1063 0.0575)
OKLCH	oklch(37.22% 0.121 28.4)
XYZ	xyz(7.6651, 4.5866, 1.2921)
Luminance	0.0459 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#731D17 #176D73

analogous

#73173F #731D17 #734B17

triadic

#731D17 #17731D #1D1773

tetradic

#731D17 #3F7317 #176D73 #4B1773

square

#731D17 #3F7317 #176D73 #4B1773

split-complementary

#731D17 #17734B #173F73

monochromatic

#1A0605 #40100D #731D17 #A62A21 #D53A2F

Accessibility & contrast

On white

10.95

#731D17 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#731D17 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #731D17

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##731D17	#FFFFFF	#000000	##FFFFFF
##731D17	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#363115

Deuteranopia (green-blind)

#4C4314

Tritanopia (blue-blind)

#7F001C

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #731d17;
/* rgb */ color: rgb(115, 29, 23);
/* oklch */ color: oklch(37.2% 0.121 28.4);

Tailwind

colors: {
  custom: {
    50: '#a36054',
    500: '#731d17',
    950: '#000000',
  },
}

SCSS

$custom: #731d17;
$custom-light: #a36054;
$custom-dark: #000000;

JSON

{
  "hex": "#731d17",
  "rgb": {
    "r": 115,
    "g": 29,
    "b": 23
  },
  "hsl": {
    "h": 3.913,
    "s": 66.667,
    "l": 27.059
  },
  "oklch": {
    "l": 0.37219,
    "c": 0.12085,
    "h": 28.4
  },
  "luminance": 0.04585
}

Semantic roles & 50–950 ramp

primary

#731D17

secondary

#3DA2A9

accent

#DEEA3E

background

#FAF5F4

surface

#F4EAE7

border

#CEC6C3

text

#100503

muted

#7F7978

Preview Lab

Preview with #731D17

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

Preview Lab → · Contrast checker → · Palette generator →