#A0311A#A0311A

#A0311A is a mid, vivid red. Relative luminance 0.097; OKLCH L 47.7% C 0.151 H 33.4°. Best body text is #FFFFFF at 7.12:1 contrast (WCAG AA passes).

Color values

HEX	#A0311A
RGB	rgb(160, 49, 26)
HSL	hsl(10, 72%, 36%)
HSV	hsv(10, 84%, 63%)
CMYK	cmyk(0%, 69.4%, 83.8%, 37.3%)
CIE-LAB	lab(37.38, 44.72, 39.03)
CIE-LCH	lch(37.38, 59.36, 41.11°)
OKLab	oklab(47.73% 0.1258 0.083)
OKLCH	oklch(47.73% 0.151 33.4)
XYZ	xyz(15.7838, 9.7472, 2.0274)
Luminance	0.0974 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A0311A #1A89A0

analogous

#A01A46 #A0311A #A0741A

triadic

#A0311A #1AA031 #311AA0

tetradic

#A0311A #46A01A #1A89A0 #741AA0

square

#A0311A #46A01A #1A89A0 #741AA0

split-complementary

#A0311A #1AA074 #1A46A0

monochromatic

#371109 #6B2111 #A0311A #D54123 #E36B52

Accessibility & contrast

On white

7.12

#A0311A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#A0311A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A0311A

7.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A0311A	#FFFFFF	#000000	##FFFFFF
##A0311A	1.00	7.12	2.95	7.12
#FFFFFF	7.12	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524816

Deuteranopia (green-blind)

#6D6114

Tritanopia (blue-blind)

#B1082D

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #a0311a;
/* rgb */ color: rgb(160, 49, 26);
/* oklch */ color: oklch(47.7% 0.151 33.4);

Tailwind

colors: {
  custom: {
    50: '#c57059',
    500: '#a0311a',
    950: '#000000',
  },
}

SCSS

$custom: #a0311a;
$custom-light: #c57059;
$custom-dark: #000000;

JSON

{
  "hex": "#a0311a",
  "rgb": {
    "r": 160,
    "g": 49,
    "b": 26
  },
  "hsl": {
    "h": 10.299,
    "s": 72.043,
    "l": 36.471
  },
  "oklch": {
    "l": 0.47727,
    "c": 0.15071,
    "h": 33.4
  },
  "luminance": 0.09745
}

Semantic roles & 50–950 ramp

primary

#A0311A

secondary

#50B1C5

accent

#D0EF39

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#140803

muted

#837B78

Preview Lab

Preview with #A0311A

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

Preview Lab → · Contrast checker → · Palette generator →