#A1311D#A1311D

#A1311D is a mid, vivid red. Relative luminance 0.099; OKLCH L 47.9% C 0.151 H 32.5°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#A1311D
RGB	rgb(161, 49, 29)
HSL	hsl(9, 69%, 37%)
HSV	hsv(9, 82%, 63%)
CMYK	cmyk(0%, 69.6%, 82%, 36.9%)
CIE-LAB	lab(37.60, 45.16, 37.75)
CIE-LCH	lch(37.60, 58.86, 39.89°)
OKLab	oklab(47.93% 0.1276 0.0812)
OKLCH	oklch(47.93% 0.151 32.5)
XYZ	xyz(16.0199, 9.8648, 2.2227)
Luminance	0.0986 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A1311D #1D8DA1

analogous

#A11D4B #A1311D #A1731D

triadic

#A1311D #1DA131 #311DA1

tetradic

#A1311D #4BA11D #1D8DA1 #731DA1

square

#A1311D #4BA11D #1D8DA1 #731DA1

split-complementary

#A1311D #1DA173 #1D4BA1

monochromatic

#39110A #6D2114 #A1311D #D54126 #E16C58

Accessibility & contrast

On white

7.06

#A1311D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#A1311D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A1311D

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A1311D	#FFFFFF	#000000	##FFFFFF
##A1311D	1.00	7.06	2.97	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#52491A

Deuteranopia (green-blind)

#6E6218

Tritanopia (blue-blind)

#B2082D

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #a1311d;
/* rgb */ color: rgb(161, 49, 29);
/* oklch */ color: oklch(47.9% 0.151 32.5);

Tailwind

colors: {
  custom: {
    50: '#c5705b',
    500: '#a1311d',
    950: '#000000',
  },
}

SCSS

$custom: #a1311d;
$custom-light: #c5705b;
$custom-dark: #000000;

JSON

{
  "hex": "#a1311d",
  "rgb": {
    "r": 161,
    "g": 49,
    "b": 29
  },
  "hsl": {
    "h": 9.091,
    "s": 69.474,
    "l": 37.255
  },
  "oklch": {
    "l": 0.4793,
    "c": 0.15124,
    "h": 32.5
  },
  "luminance": 0.09862
}

Semantic roles & 50–950 ramp

primary

#A1311D

secondary

#55B4C4

accent

#D2EC3C

background

#FDF7F5

surface

#FAEDE9

border

#D3C8C5

text

#140804

muted

#837B79

Preview Lab

Preview with #A1311D

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

Preview Lab → · Contrast checker → · Palette generator →