#A81F2B#A81F2B

#A81F2B is a mid, vivid red. Relative luminance 0.095; OKLCH L 47.7% C 0.171 H 22.8°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#A81F2B
RGB	rgb(168, 31, 43)
HSL	hsl(355, 69%, 39%)
HSV	hsv(355, 82%, 66%)
CMYK	cmyk(0%, 81.5%, 74.4%, 34.1%)
CIE-LAB	lab(36.90, 54.13, 29.38)
CIE-LCH	lch(36.90, 61.59, 28.49°)
OKLab	oklab(47.7% 0.158 0.0664)
OKLCH	oklch(47.7% 0.171 22.8)
XYZ	xyz(17.0765, 9.4820, 3.2161)
Luminance	0.0948 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A81F2B #1FA89C

analogous

#A81F6F #A81F2B #A8581F

triadic

#A81F2B #2BA81F #1F2BA8

tetradic

#A81F2B #6FA81F #1FA89C #581FA8

square

#A81F2B #6FA81F #1FA89C #581FA8

split-complementary

#A81F2B #1FA858 #1F6FA8

monochromatic

#410C11 #74151E #A81F2B #D82C3B #E2606B

Accessibility & contrast

On white

7.25

#A81F2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#A81F2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A81F2B

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A81F2B	#FFFFFF	#000000	##FFFFFF
##A81F2B	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)

#4A442A

Deuteranopia (green-blind)

#6C6126

Tritanopia (blue-blind)

#B90025

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #a81f2b;
/* rgb */ color: rgb(168, 31, 43);
/* oklch */ color: oklch(47.7% 0.171 22.8);

Tailwind

colors: {
  custom: {
    50: '#cb6964',
    500: '#a81f2b',
    950: '#000000',
  },
}

SCSS

$custom: #a81f2b;
$custom-light: #cb6964;
$custom-dark: #000000;

JSON

{
  "hex": "#a81f2b",
  "rgb": {
    "r": 168,
    "g": 31,
    "b": 43
  },
  "hsl": {
    "h": 354.745,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.47704,
    "c": 0.17135,
    "h": 22.8
  },
  "luminance": 0.09479
}

Semantic roles & 50–950 ramp

primary

#A81F2B

secondary

#5DC6BD

accent

#ECDC3C

background

#FDF6F6

surface

#FBECEB

border

#D4C7C6

text

#150705

muted

#837A7A

Preview Lab

Preview with #A81F2B

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

Preview Lab → · Contrast checker → · Palette generator →