#A11B37#A11B37

#A11B37 is a mid, vivid red. Relative luminance 0.086; OKLCH L 46.3% C 0.167 H 16.2°. Best body text is #FFFFFF at 7.70:1 contrast (WCAG AA passes).

Color values

HEX	#A11B37
RGB	rgb(161, 27, 55)
HSL	hsl(347, 71%, 37%)
HSV	hsv(347, 83%, 63%)
CMYK	cmyk(0%, 83.2%, 65.8%, 36.9%)
CIE-LAB	lab(35.28, 53.78, 19.52)
CIE-LCH	lch(35.28, 57.21, 19.95°)
OKLab	oklab(46.32% 0.1605 0.0467)
OKLCH	oklch(46.32% 0.167 16.2)
XYZ	xyz(15.7812, 8.6392, 4.4503)
Luminance	0.0864 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A11B37 #1BA185

analogous

#A11B7A #A11B37 #A1421B

triadic

#A11B37 #37A11B #1B37A1

tetradic

#A11B37 #7AA11B #1BA185 #421BA1

square

#A11B37 #7AA11B #1BA185 #421BA1

split-complementary

#A11B37 #1BA142 #1B7AA1

monochromatic

#380913 #6D1225 #A11B37 #D52449 #E25472

Accessibility & contrast

On white

7.70

#A11B37 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#A11B37 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A11B37

7.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A11B37	#FFFFFF	#000000	##FFFFFF
##A11B37	1.00	7.70	2.73	7.70
#FFFFFF	7.70	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#444137

Deuteranopia (green-blind)

#665D33

Tritanopia (blue-blind)

#B10028

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #a11b37;
/* rgb */ color: rgb(161, 27, 55);
/* oklch */ color: oklch(46.3% 0.167 16.2);

Tailwind

colors: {
  custom: {
    50: '#c4676d',
    500: '#a11b37',
    950: '#000000',
  },
}

SCSS

$custom: #a11b37;
$custom-light: #c4676d;
$custom-dark: #000000;

JSON

{
  "hex": "#a11b37",
  "rgb": {
    "r": 161,
    "g": 27,
    "b": 55
  },
  "hsl": {
    "h": 347.463,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.46318,
    "c": 0.1672,
    "h": 16.2
  },
  "luminance": 0.08637
}

Semantic roles & 50–950 ramp

primary

#A11B37

secondary

#52C5AD

accent

#EEC83A

background

#FDF6F6

surface

#FAEBEB

border

#D3C6C6

text

#140707

muted

#837A7A

Preview Lab

Preview with #A11B37

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

Preview Lab → · Contrast checker → · Palette generator →