#A13637#A13637

#A13637 is a mid, vivid red. Relative luminance 0.105; OKLCH L 48.9% C 0.142 H 23.5°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#A13637
RGB	rgb(161, 54, 55)
HSL	hsl(359, 50%, 42%)
HSV	hsv(359, 66%, 63%)
CMYK	cmyk(0%, 66.5%, 65.8%, 36.9%)
CIE-LAB	lab(38.71, 44.26, 23.88)
CIE-LCH	lch(38.71, 50.29, 28.35°)
OKLab	oklab(48.87% 0.1301 0.0566)
OKLCH	oklch(48.87% 0.142 23.5)
XYZ	xyz(16.7084, 10.4936, 4.7593)
Luminance	0.1049 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A13637 #36A1A0

analogous

#A1366D #A13637 #A16A36

triadic

#A13637 #37A136 #3637A1

tetradic

#A13637 #6DA136 #36A1A0 #6A36A1

square

#A13637 #6DA136 #36A1A0 #6A36A1

split-complementary

#A13637 #36A16A #366DA1

monochromatic

#451718 #732727 #A13637 #C45051 #D47E7F

Accessibility & contrast

On white

6.78

#A13637 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#A13637 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A13637

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A13637	#FFFFFF	#000000	##FFFFFF
##A13637	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524D36

Deuteranopia (green-blind)

#6D6434

Tritanopia (blue-blind)

#B11D37

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #a13637;
/* rgb */ color: rgb(161, 54, 55);
/* oklch */ color: oklch(48.9% 0.142 23.5);

Tailwind

colors: {
  custom: {
    50: '#c3736e',
    500: '#a13637',
    950: '#000000',
  },
}

SCSS

$custom: #a13637;
$custom-light: #c3736e;
$custom-dark: #000000;

JSON

{
  "hex": "#a13637",
  "rgb": {
    "r": 161,
    "g": 54,
    "b": 55
  },
  "hsl": {
    "h": 359.439,
    "s": 49.767,
    "l": 42.157
  },
  "oklch": {
    "l": 0.48872,
    "c": 0.14191,
    "h": 23.5
  },
  "luminance": 0.10491
}

Semantic roles & 50–950 ramp

primary

#A13637

secondary

#76BDBC

accent

#D9D84F

background

#FCF7F6

surface

#F9EDEB

border

#D2C8C6

text

#140807

muted

#827B7A

Preview Lab

Preview with #A13637

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

Preview Lab → · Contrast checker → · Palette generator →