#B41B1F#B41B1F

#B41B1F is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.6% C 0.186 H 26.5°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#B41B1F
RGB	rgb(180, 27, 31)
HSL	hsl(358, 74%, 41%)
HSV	hsv(358, 85%, 71%)
CMYK	cmyk(0%, 85%, 82.8%, 29.4%)
CIE-LAB	lab(38.88, 58.16, 39.21)
CIE-LCH	lch(38.88, 70.15, 33.99°)
OKLab	oklab(49.56% 0.1666 0.0832)
OKLCH	oklch(49.56% 0.186 26.5)
XYZ	xyz(19.4641, 10.5893, 2.3152)
Luminance	0.1059 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B41B1F #1BB4B0

analogous

#B41B6C #B41B1F #B4631B

triadic

#B41B1F #1FB41B #1B1FB4

tetradic

#B41B1F #6CB41B #1BB4B0 #631BB4

square

#B41B1F #6CB41B #1BB4B0 #631BB4

split-complementary

#B41B1F #1BB463 #1B6CB4

monochromatic

#4A0B0D #7F1316 #B41B1F #DF2D31 #E76265

Accessibility & contrast

On white

6.74

#B41B1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#B41B1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B41B1F

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B41B1F	#FFFFFF	#000000	##FFFFFF
##B41B1F	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F471D

Deuteranopia (green-blind)

#746717

Tritanopia (blue-blind)

#C7001F

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b41b1f;
/* rgb */ color: rgb(180, 27, 31);
/* oklch */ color: oklch(49.6% 0.186 26.5);

Tailwind

colors: {
  custom: {
    50: '#d56a5c',
    500: '#b41b1f',
    950: '#000000',
  },
}

SCSS

$custom: #b41b1f;
$custom-light: #d56a5c;
$custom-dark: #000000;

JSON

{
  "hex": "#b41b1f",
  "rgb": {
    "r": 180,
    "g": 27,
    "b": 31
  },
  "hsl": {
    "h": 358.431,
    "s": 73.913,
    "l": 40.588
  },
  "oklch": {
    "l": 0.49563,
    "c": 0.18621,
    "h": 26.5
  },
  "luminance": 0.10586
}

Semantic roles & 50–950 ramp

primary

#B41B1F

secondary

#5FCCC9

accent

#F1EC37

background

#FEF6F5

surface

#FDECE9

border

#D5C7C5

text

#160704

muted

#847A79

Preview Lab

Preview with #B41B1F

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

Preview Lab → · Contrast checker → · Palette generator →