#A13731#A13731

#A13731 is a mid, vivid red. Relative luminance 0.105; OKLCH L 48.9% C 0.142 H 26.9°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#A13731
RGB	rgb(161, 55, 49)
HSL	hsl(3, 53%, 41%)
HSV	hsv(3, 70%, 63%)
CMYK	cmyk(0%, 65.8%, 69.6%, 36.9%)
CIE-LAB	lab(38.78, 43.46, 27.62)
CIE-LCH	lch(38.78, 51.50, 32.44°)
OKLab	oklab(48.89% 0.1264 0.0641)
OKLCH	oklch(48.89% 0.142 26.9)
XYZ	xyz(16.6202, 10.5335, 4.0631)
Luminance	0.1053 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A13731 #319BA1

analogous

#A13163 #A13731 #A16F31

triadic

#A13731 #31A137 #3731A1

tetradic

#A13731 #63A131 #319BA1 #6F31A1

square

#A13731 #63A131 #319BA1 #6F31A1

split-complementary

#A13731 #31A16F #3163A1

monochromatic

#431714 #722723 #A13731 #C74F48 #D67C77

Accessibility & contrast

On white

6.76

#A13731 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#A13731 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A13731

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A13731	#FFFFFF	#000000	##FFFFFF
##A13731	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544D30

Deuteranopia (green-blind)

#6E642E

Tritanopia (blue-blind)

#B11D36

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a13731;
/* rgb */ color: rgb(161, 55, 49);
/* oklch */ color: oklch(48.9% 0.142 26.9);

Tailwind

colors: {
  custom: {
    50: '#c47369',
    500: '#a13731',
    950: '#000000',
  },
}

SCSS

$custom: #a13731;
$custom-light: #c47369;
$custom-dark: #000000;

JSON

{
  "hex": "#a13731",
  "rgb": {
    "r": 161,
    "g": 55,
    "b": 49
  },
  "hsl": {
    "h": 3.214,
    "s": 53.333,
    "l": 41.176
  },
  "oklch": {
    "l": 0.48894,
    "c": 0.14171,
    "h": 26.9
  },
  "luminance": 0.10531
}

Semantic roles & 50–950 ramp

primary

#A13731

secondary

#70BABE

accent

#D5DD4B

background

#FCF7F6

surface

#F9EDEB

border

#D2C8C6

text

#140806

muted

#827B7A

Preview Lab

Preview with #A13731

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

Preview Lab → · Contrast checker → · Palette generator →