#B41B1B#B41B1B

#B41B1B is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.5% C 0.187 H 27.5°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#B41B1B
RGB	rgb(180, 27, 27)
HSL	hsl(0, 74%, 41%)
HSV	hsv(0, 85%, 71%)
CMYK	cmyk(0%, 85%, 85%, 29.4%)
CIE-LAB	lab(38.85, 58.06, 41.32)
CIE-LCH	lch(38.85, 71.26, 35.44°)
OKLab	oklab(49.53% 0.1655 0.0862)
OKLCH	oklch(49.53% 0.187 27.5)
XYZ	xyz(19.4146, 10.5695, 2.0546)
Luminance	0.1057 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B41B1B #1BB4B4

analogous

#B41B67 #B41B1B #B4671B

triadic

#B41B1B #1BB41B #1B1BB4

tetradic

#B41B1B #67B41B #1BB4B4 #671BB4

square

#B41B1B #67B41B #1BB4B4 #671BB4

split-complementary

#B41B1B #1BB467 #1B67B4

monochromatic

#4A0B0B #7F1313 #B41B1B #DF2D2D #E76262

Accessibility & contrast

On white

6.75

#B41B1B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#B41B1B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B41B1B

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B41B1B	#FFFFFF	#000000	##FFFFFF
##B41B1B	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4618

Deuteranopia (green-blind)

#746711

Tritanopia (blue-blind)

#C7001E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b41b1b;
/* rgb */ color: rgb(180, 27, 27);
/* oklch */ color: oklch(49.5% 0.187 27.5);

Tailwind

colors: {
  custom: {
    50: '#d56a59',
    500: '#b41b1b',
    950: '#000000',
  },
}

SCSS

$custom: #b41b1b;
$custom-light: #d56a59;
$custom-dark: #000000;

JSON

{
  "hex": "#b41b1b",
  "rgb": {
    "r": 180,
    "g": 27,
    "b": 27
  },
  "hsl": {
    "h": 0,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.49527,
    "c": 0.18662,
    "h": 27.5
  },
  "luminance": 0.10566
}

Semantic roles & 50–950 ramp

primary

#B41B1B

secondary

#5FCCCC

accent

#F1F137

background

#FEF6F5

surface

#FDECE9

border

#D5C7C5

text

#160703

muted

#847A78

Preview Lab

Preview with #B41B1B

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

Preview Lab → · Contrast checker → · Palette generator →