#A11B1C#A11B1C

#A11B1C is a mid, vivid red. Relative luminance 0.084; OKLCH L 45.9% C 0.169 H 26.8°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#A11B1C
RGB	rgb(161, 27, 28)
HSL	hsl(360, 71%, 37%)
HSV	hsv(360, 83%, 63%)
CMYK	cmyk(0%, 83.2%, 82.6%, 36.9%)
CIE-LAB	lab(34.90, 52.61, 35.67)
CIE-LCH	lch(34.90, 63.56, 34.14°)
OKLab	oklab(45.91% 0.1507 0.0762)
OKLCH	oklch(45.91% 0.169 26.8)
XYZ	xyz(15.3014, 8.4473, 1.9232)
Luminance	0.0844 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#A11B1C #1BA1A0

analogous

#A11B5F #A11B1C #A15D1B

triadic

#A11B1C #1CA11B #1B1CA1

tetradic

#A11B1C #5FA11B #1BA1A0 #5D1BA1

square

#A11B1C #5FA11B #1BA1A0 #5D1BA1

split-complementary

#A11B1C #1BA15D #1B5FA1

monochromatic

#38090A #6D1213 #A11B1C #D52425 #E25455

Accessibility & contrast

On white

7.81

#A11B1C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#A11B1C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #A11B1C

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##A11B1C	#FFFFFF	#000000	##FFFFFF
##A11B1C	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#47401A

Deuteranopia (green-blind)

#685C15

Tritanopia (blue-blind)

#B2001E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #a11b1c;
/* rgb */ color: rgb(161, 27, 28);
/* oklch */ color: oklch(45.9% 0.169 26.8);

Tailwind

colors: {
  custom: {
    50: '#c66659',
    500: '#a11b1c',
    950: '#000000',
  },
}

SCSS

$custom: #a11b1c;
$custom-light: #c66659;
$custom-dark: #000000;

JSON

{
  "hex": "#a11b1c",
  "rgb": {
    "r": 161,
    "g": 27,
    "b": 28
  },
  "hsl": {
    "h": 359.552,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.45913,
    "c": 0.16888,
    "h": 26.8
  },
  "luminance": 0.08445
}

Semantic roles & 50–950 ramp

primary

#A11B1C

secondary

#52C5C4

accent

#EEED3A

background

#FDF6F5

surface

#FAEBE9

border

#D3C6C5

text

#150703

muted

#837A78

Preview Lab

Preview with #A11B1C

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

Preview Lab → · Contrast checker → · Palette generator →