#A1311C#A1311C

#A1311C is a mid, vivid red. Relative luminance 0.099; OKLCH L 47.9% C 0.151 H 32.8°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#A1311C
RGB	rgb(161, 49, 28)
HSL	hsl(9, 70%, 37%)
HSV	hsv(9, 83%, 63%)
CMYK	cmyk(0%, 69.6%, 82.6%, 36.9%)
CIE-LAB	lab(37.59, 45.13, 38.27)
CIE-LCH	lch(37.59, 59.17, 40.29°)
OKLab	oklab(47.92% 0.1273 0.0819)
OKLCH	oklch(47.92% 0.151 32.8)
XYZ	xyz(16.0077, 9.8600, 2.1587)
Luminance	0.0986 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A1311C #1C8CA1

analogous

#A11C49 #A1311C #A1741C

triadic

#A1311C #1CA131 #311CA1

tetradic

#A1311C #49A11C #1C8CA1 #741CA1

square

#A1311C #49A11C #1C8CA1 #741CA1

split-complementary

#A1311C #1CA174 #1C49A1

monochromatic

#39110A #6D2113 #A1311C #D54125 #E26C56

Accessibility & contrast

On white

7.07

#A1311C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#A1311C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A1311C

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A1311C	#FFFFFF	#000000	##FFFFFF
##A1311C	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#524918

Deuteranopia (green-blind)

#6E6217

Tritanopia (blue-blind)

#B2082D

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #a1311c;
/* rgb */ color: rgb(161, 49, 28);
/* oklch */ color: oklch(47.9% 0.151 32.8);

Tailwind

colors: {
  custom: {
    50: '#c5705a',
    500: '#a1311c',
    950: '#000000',
  },
}

SCSS

$custom: #a1311c;
$custom-light: #c5705a;
$custom-dark: #000000;

JSON

{
  "hex": "#a1311c",
  "rgb": {
    "r": 161,
    "g": 49,
    "b": 28
  },
  "hsl": {
    "h": 9.474,
    "s": 70.37,
    "l": 37.059
  },
  "oklch": {
    "l": 0.47921,
    "c": 0.15141,
    "h": 32.8
  },
  "luminance": 0.09858
}

Semantic roles & 50–950 ramp

primary

#A1311C

secondary

#54B3C5

accent

#D1ED3B

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#150804

muted

#837B79

Preview Lab

Preview with #A1311C

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

Preview Lab → · Contrast checker → · Palette generator →