#A13737#A13737

#A13737 is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.0% C 0.141 H 23.9°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#A13737
RGB	rgb(161, 55, 55)
HSL	hsl(0, 49%, 42%)
HSV	hsv(0, 66%, 63%)
CMYK	cmyk(0%, 65.8%, 65.8%, 36.9%)
CIE-LAB	lab(38.88, 43.82, 24.09)
CIE-LCH	lch(38.88, 50.00, 28.80°)
OKLab	oklab(49% 0.1287 0.0571)
OKLCH	oklch(49% 0.141 23.9)
XYZ	xyz(16.7554, 10.5876, 4.7750)
Luminance	0.1058 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A13737 #37A1A1

analogous

#A1376C #A13737 #A16C37

triadic

#A13737 #37A137 #3737A1

tetradic

#A13737 #6CA137 #37A1A1 #6C37A1

square

#A13737 #6CA137 #37A1A1 #6C37A1

split-complementary

#A13737 #37A16C #376CA1

monochromatic

#461818 #732727 #A13737 #C45151 #D37F7F

Accessibility & contrast

On white

6.74

#A13737 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#A13737 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A13737

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A13737	#FFFFFF	#000000	##FFFFFF
##A13737	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#534D36

Deuteranopia (green-blind)

#6E6434

Tritanopia (blue-blind)

#B11E38

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a13737;
/* rgb */ color: rgb(161, 55, 55);
/* oklch */ color: oklch(49.0% 0.141 23.9);

Tailwind

colors: {
  custom: {
    50: '#c3746e',
    500: '#a13737',
    950: '#000000',
  },
}

SCSS

$custom: #a13737;
$custom-light: #c3746e;
$custom-dark: #000000;

JSON

{
  "hex": "#a13737",
  "rgb": {
    "r": 161,
    "g": 55,
    "b": 55
  },
  "hsl": {
    "h": 0,
    "s": 49.074,
    "l": 42.353
  },
  "oklch": {
    "l": 0.48995,
    "c": 0.14082,
    "h": 23.9
  },
  "luminance": 0.10585
}

Semantic roles & 50–950 ramp

primary

#A13737

secondary

#77BDBD

accent

#D9D94F

background

#FCF7F6

surface

#F9EDEB

border

#D2C8C6

text

#140807

muted

#827B7A

Preview Lab

Preview with #A13737

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

Preview Lab → · Contrast checker → · Palette generator →