#A11B31#A11B31

#A11B31 is a mid, vivid red. Relative luminance 0.086; OKLCH L 46.2% C 0.167 H 18.9°. Best body text is #FFFFFF at 7.73:1 contrast (WCAG AA passes).

Color values

HEX	#A11B31
RGB	rgb(161, 27, 49)
HSL	hsl(350, 71%, 37%)
HSV	hsv(350, 83%, 63%)
CMYK	cmyk(0%, 83.2%, 69.6%, 36.9%)
CIE-LAB	lab(35.17, 53.45, 23.23)
CIE-LCH	lch(35.17, 58.28, 23.49°)
OKLab	oklab(46.2% 0.1582 0.0543)
OKLCH	oklch(46.2% 0.167 18.9)
XYZ	xyz(15.6460, 8.5852, 3.7384)
Luminance	0.0858 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A11B31 #1BA18B

analogous

#A11B74 #A11B31 #A1481B

triadic

#A11B31 #31A11B #1B31A1

tetradic

#A11B31 #74A11B #1BA18B #481BA1

square

#A11B31 #74A11B #1BA18B #481BA1

split-complementary

#A11B31 #1BA148 #1B74A1

monochromatic

#380911 #6D1221 #A11B31 #D52441 #E2546B

Accessibility & contrast

On white

7.73

#A11B31 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#A11B31 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A11B31

7.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A11B31	#FFFFFF	#000000	##FFFFFF
##A11B31	1.00	7.73	2.72	7.73
#FFFFFF	7.73	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#454131

Deuteranopia (green-blind)

#665D2D

Tritanopia (blue-blind)

#B10025

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #a11b31;
/* rgb */ color: rgb(161, 27, 49);
/* oklch */ color: oklch(46.2% 0.167 18.9);

Tailwind

colors: {
  custom: {
    50: '#c56768',
    500: '#a11b31',
    950: '#000000',
  },
}

SCSS

$custom: #a11b31;
$custom-light: #c56768;
$custom-dark: #000000;

JSON

{
  "hex": "#a11b31",
  "rgb": {
    "r": 161,
    "g": 27,
    "b": 49
  },
  "hsl": {
    "h": 350.149,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.46204,
    "c": 0.16721,
    "h": 18.9
  },
  "luminance": 0.08583
}

Semantic roles & 50–950 ramp

primary

#A11B31

secondary

#52C5B2

accent

#EED03A

background

#FDF6F6

surface

#FAEBEB

border

#D3C6C6

text

#140706

muted

#837A7A

Preview Lab

Preview with #A11B31

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

Preview Lab → · Contrast checker → · Palette generator →