#B13B33#B13B33

#B13B33 is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.1% C 0.155 H 27.6°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#B13B33
RGB	rgb(177, 59, 51)
HSL	hsl(4, 55%, 45%)
HSV	hsv(4, 71%, 69%)
CMYK	cmyk(0%, 66.7%, 71.2%, 30.6%)
CIE-LAB	lab(42.33, 47.41, 31.34)
CIE-LCH	lch(42.33, 56.83, 33.46°)
OKLab	oklab(52.11% 0.1373 0.0718)
OKLCH	oklch(52.11% 0.155 27.6)
XYZ	xyz(20.2951, 12.7170, 4.5173)
Luminance	0.1271 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13B33 #33A9B1

analogous

#B1336A #B13B33 #B17A33

triadic

#B13B33 #33B13B #3B33B1

tetradic

#B13B33 #6AB133 #33A9B1 #7A33B1

square

#B13B33 #6AB133 #33A9B1 #7A33B1

split-complementary

#B13B33 #33B17A #336AB1

monochromatic

#521B18 #812B25 #B13B33 #CE5B54 #DB8983

Accessibility & contrast

On white

5.93

#B13B33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B13B33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13B33

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13B33	#FFFFFF	#000000	##FFFFFF
##B13B33	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5431

Deuteranopia (green-blind)

#796D2F

Tritanopia (blue-blind)

#C31B3A

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b13b33;
/* rgb */ color: rgb(177, 59, 51);
/* oklch */ color: oklch(52.1% 0.155 27.6);

Tailwind

colors: {
  custom: {
    50: '#d0776b',
    500: '#b13b33',
    950: '#000000',
  },
}

SCSS

$custom: #b13b33;
$custom-light: #d0776b;
$custom-dark: #000000;

JSON

{
  "hex": "#b13b33",
  "rgb": {
    "r": 177,
    "g": 59,
    "b": 51
  },
  "hsl": {
    "h": 3.81,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.52106,
    "c": 0.15494,
    "h": 27.6
  },
  "luminance": 0.12714
}

Semantic roles & 50–950 ramp

primary

#B13B33

secondary

#7BC0C5

accent

#D5DF49

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B13B33

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

Preview Lab → · Contrast checker → · Palette generator →