#A81D3B#A81D3B

#A81D3B is a mid, vivid red. Relative luminance 0.095; OKLCH L 47.8% C 0.172 H 15.7°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#A81D3B
RGB	rgb(168, 29, 59)
HSL	hsl(347, 71%, 39%)
HSV	hsv(347, 83%, 66%)
CMYK	cmyk(0%, 82.7%, 64.9%, 34.1%)
CIE-LAB	lab(36.97, 55.47, 19.42)
CIE-LCH	lch(36.97, 58.77, 19.30°)
OKLab	oklab(47.84% 0.1659 0.0467)
OKLCH	oklch(47.84% 0.172 15.7)
XYZ	xyz(17.3791, 9.5220, 5.0597)
Luminance	0.0952 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A81D3B #1DA88A

analogous

#A81D80 #A81D3B #A8441D

triadic

#A81D3B #3BA81D #1D3BA8

tetradic

#A81D3B #80A81D #1DA88A #441DA8

square

#A81D3B #80A81D #1DA88A #441DA8

split-complementary

#A81D3B #1DA844 #1D80A8

monochromatic

#400B16 #741429 #A81D3B #DA284F #E35C79

Accessibility & contrast

On white

7.23

#A81D3B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#A81D3B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A81D3B

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A81D3B	#FFFFFF	#000000	##FFFFFF
##A81D3B	1.00	7.23	2.90	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47453B

Deuteranopia (green-blind)

#6A6137

Tritanopia (blue-blind)

#B9002A

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a81d3b;
/* rgb */ color: rgb(168, 29, 59);
/* oklch */ color: oklch(47.8% 0.172 15.7);

Tailwind

colors: {
  custom: {
    50: '#ca6970',
    500: '#a81d3b',
    950: '#000000',
  },
}

SCSS

$custom: #a81d3b;
$custom-light: #ca6970;
$custom-dark: #000000;

JSON

{
  "hex": "#a81d3b",
  "rgb": {
    "r": 168,
    "g": 29,
    "b": 59
  },
  "hsl": {
    "h": 347.05,
    "s": 70.558,
    "l": 38.627
  },
  "oklch": {
    "l": 0.47843,
    "c": 0.1723,
    "h": 15.7
  },
  "luminance": 0.09519
}

Semantic roles & 50–950 ramp

primary

#A81D3B

secondary

#5AC7AF

accent

#EDC73A

background

#FDF6F6

surface

#FAECEC

border

#D3C7C7

text

#150707

muted

#837A7A

Preview Lab

Preview with #A81D3B

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

Preview Lab → · Contrast checker → · Palette generator →