#A81D37#A81D37

#A81D37 is a mid, vivid red. Relative luminance 0.095; OKLCH L 47.8% C 0.172 H 17.5°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#A81D37
RGB	rgb(168, 29, 55)
HSL	hsl(349, 71%, 39%)
HSV	hsv(349, 83%, 66%)
CMYK	cmyk(0%, 82.7%, 67.3%, 34.1%)
CIE-LAB	lab(36.90, 55.25, 21.88)
CIE-LCH	lch(36.90, 59.42, 21.60°)
OKLab	oklab(47.77% 0.1643 0.0518)
OKLCH	oklch(47.77% 0.172 17.5)
XYZ	xyz(17.2793, 9.4821, 4.5341)
Luminance	0.0948 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A81D37 #1DA88E

analogous

#A81D7C #A81D37 #A8481D

triadic

#A81D37 #37A81D #1D37A8

tetradic

#A81D37 #7CA81D #1DA88E #481DA8

square

#A81D37 #7CA81D #1DA88E #481DA8

split-complementary

#A81D37 #1DA848 #1D7CA8

monochromatic

#400B15 #741426 #A81D37 #DA2849 #E35C76

Accessibility & contrast

On white

7.25

#A81D37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#A81D37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A81D37

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A81D37	#FFFFFF	#000000	##FFFFFF
##A81D37	1.00	7.25	2.90	7.25
#FFFFFF	7.25	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#484437

Deuteranopia (green-blind)

#6B6133

Tritanopia (blue-blind)

#B90029

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a81d37;
/* rgb */ color: rgb(168, 29, 55);
/* oklch */ color: oklch(47.8% 0.172 17.5);

Tailwind

colors: {
  custom: {
    50: '#ca696d',
    500: '#a81d37',
    950: '#000000',
  },
}

SCSS

$custom: #a81d37;
$custom-light: #ca696d;
$custom-dark: #000000;

JSON

{
  "hex": "#a81d37",
  "rgb": {
    "r": 168,
    "g": 29,
    "b": 55
  },
  "hsl": {
    "h": 348.777,
    "s": 70.558,
    "l": 38.627
  },
  "oklch": {
    "l": 0.47765,
    "c": 0.17224,
    "h": 17.5
  },
  "luminance": 0.09479
}

Semantic roles & 50–950 ramp

primary

#A81D37

secondary

#5AC7B3

accent

#EDCC3A

background

#FDF6F6

surface

#FAECEB

border

#D3C7C6

text

#150707

muted

#837A7A

Preview Lab

Preview with #A81D37

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

Preview Lab → · Contrast checker → · Palette generator →