#B13F1F#B13F1F

#B13F1F is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.4% C 0.155 H 36.0°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#B13F1F
RGB	rgb(177, 63, 31)
HSL	hsl(13, 70%, 41%)
HSV	hsv(13, 82%, 69%)
CMYK	cmyk(0%, 64.4%, 82.5%, 30.6%)
CIE-LAB	lab(42.77, 44.86, 42.69)
CIE-LCH	lch(42.77, 61.93, 43.57°)
OKLab	oklab(52.37% 0.1255 0.0912)
OKLCH	oklch(52.37% 0.155 36)
XYZ	xyz(20.1586, 13.0040, 2.7446)
Luminance	0.1300 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13F1F #1F91B1

analogous

#B11F48 #B13F1F #B1881F

triadic

#B13F1F #1FB13F #3F1FB1

tetradic

#B13F1F #48B11F #1F91B1 #881FB1

square

#B13F1F #48B11F #1F91B1 #881FB1

split-complementary

#B13F1F #1FB188 #1F48B1

monochromatic

#491A0D #7D2C16 #B13F1F #DB5732 #E48266

Accessibility & contrast

On white

5.83

#B13F1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#B13F1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13F1F

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13F1F	#FFFFFF	#000000	##FFFFFF
##B13F1F	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#60551A

Deuteranopia (green-blind)

#7C6E1A

Tritanopia (blue-blind)

#C31F39

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b13f1f;
/* rgb */ color: rgb(177, 63, 31);
/* oklch */ color: oklch(52.4% 0.155 36.0);

Tailwind

colors: {
  custom: {
    50: '#d1795e',
    500: '#b13f1f',
    950: '#000000',
  },
}

SCSS

$custom: #b13f1f;
$custom-light: #d1795e;
$custom-dark: #000000;

JSON

{
  "hex": "#b13f1f",
  "rgb": {
    "r": 177,
    "g": 63,
    "b": 31
  },
  "hsl": {
    "h": 13.151,
    "s": 70.192,
    "l": 40.784
  },
  "oklch": {
    "l": 0.52366,
    "c": 0.15512,
    "h": 36
  },
  "luminance": 0.13001
}

Semantic roles & 50–950 ramp

primary

#B13F1F

secondary

#62B3CA

accent

#C6ED3B

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B13F1F

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

Preview Lab → · Contrast checker → · Palette generator →