#A8311B#A8311B

#A8311B is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.1% C 0.159 H 32.7°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#A8311B
RGB	rgb(168, 49, 27)
HSL	hsl(9, 72%, 38%)
HSV	hsv(9, 84%, 66%)
CMYK	cmyk(0%, 70.8%, 83.9%, 34.1%)
CIE-LAB	lab(38.90, 47.50, 40.48)
CIE-LCH	lch(38.90, 62.41, 40.44°)
OKLab	oklab(49.15% 0.1338 0.0858)
OKLCH	oklch(49.15% 0.159 32.7)
XYZ	xyz(17.4467, 10.6033, 2.1647)
Luminance	0.1060 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A8311B #1B92A8

analogous

#A81B4B #A8311B #A8771B

triadic

#A8311B #1BA831 #311BA8

tetradic

#A8311B #4BA81B #1B92A8 #771BA8

square

#A8311B #4BA81B #1B92A8 #771BA8

split-complementary

#A8311B #1BA877 #1B4BA8

monochromatic

#3F120A #732213 #A8311B #DC4124 #E46F59

Accessibility & contrast

On white

6.73

#A8311B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#A8311B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #A8311B

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A8311B	#FFFFFF	#000000	##FFFFFF
##A8311B	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544B17

Deuteranopia (green-blind)

#726515

Tritanopia (blue-blind)

#B9002D

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #a8311b;
/* rgb */ color: rgb(168, 49, 27);
/* oklch */ color: oklch(49.1% 0.159 32.7);

Tailwind

colors: {
  custom: {
    50: '#cb715a',
    500: '#a8311b',
    950: '#000000',
  },
}

SCSS

$custom: #a8311b;
$custom-light: #cb715a;
$custom-dark: #000000;

JSON

{
  "hex": "#a8311b",
  "rgb": {
    "r": 168,
    "g": 49,
    "b": 27
  },
  "hsl": {
    "h": 9.362,
    "s": 72.308,
    "l": 38.235
  },
  "oklch": {
    "l": 0.49146,
    "c": 0.15893,
    "h": 32.7
  },
  "luminance": 0.10601
}

Semantic roles & 50–950 ramp

primary

#A8311B

secondary

#57B6C8

accent

#D3EF39

background

#FDF7F5

surface

#FBEDE9

border

#D4C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A8311B

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

Preview Lab → · Contrast checker → · Palette generator →