#B13B28#B13B28

#B13B28 is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.0% C 0.157 H 31.7°. Best body text is #FFFFFF at 5.96:1 contrast (WCAG AA passes).

Color values

HEX	#B13B28
RGB	rgb(177, 59, 40)
HSL	hsl(8, 63%, 43%)
HSV	hsv(8, 77%, 69%)
CMYK	cmyk(0%, 66.7%, 77.4%, 30.6%)
CIE-LAB	lab(42.20, 46.92, 37.44)
CIE-LCH	lch(42.20, 60.03, 38.59°)
OKLab	oklab(51.97% 0.1335 0.0826)
OKLCH	oklch(51.97% 0.157 31.7)
XYZ	xyz(20.0807, 12.6312, 3.3878)
Luminance	0.1263 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13B28 #289EB1

analogous

#B1285A #B13B28 #B17F28

triadic

#B13B28 #28B13B #3B28B1

tetradic

#B13B28 #5AB128 #289EB1 #7F28B1

square

#B13B28 #5AB128 #289EB1 #7F28B1

split-complementary

#B13B28 #28B17F #285AB1

monochromatic

#4D1A11 #7F2A1D #B13B28 #D45642 #E08374

Accessibility & contrast

On white

5.96

#B13B28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#B13B28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13B28

5.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13B28	#FFFFFF	#000000	##FFFFFF
##B13B28	1.00	5.96	3.53	5.96
#FFFFFF	5.96	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5325

Deuteranopia (green-blind)

#7A6D24

Tritanopia (blue-blind)

#C31837

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b13b28;
/* rgb */ color: rgb(177, 59, 40);
/* oklch */ color: oklch(52.0% 0.157 31.7);

Tailwind

colors: {
  custom: {
    50: '#d07763',
    500: '#b13b28',
    950: '#000000',
  },
}

SCSS

$custom: #b13b28;
$custom-light: #d07763;
$custom-dark: #000000;

JSON

{
  "hex": "#b13b28",
  "rgb": {
    "r": 177,
    "g": 59,
    "b": 40
  },
  "hsl": {
    "h": 8.321,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.51965,
    "c": 0.15698,
    "h": 31.7
  },
  "luminance": 0.12628
}

Semantic roles & 50–950 ramp

primary

#B13B28

secondary

#6EBBC7

accent

#CFE642

background

#FDF7F5

surface

#FBEDEA

border

#D4C8C6

text

#150905

muted

#837B79

Preview Lab

Preview with #B13B28

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

Preview Lab → · Contrast checker → · Palette generator →