#B13A37#B13A37

#B13A37 is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.0% C 0.155 H 25.6°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#B13A37
RGB	rgb(177, 58, 55)
HSL	hsl(1, 53%, 45%)
HSV	hsv(1, 69%, 69%)
CMYK	cmyk(0%, 67.2%, 68.9%, 30.6%)
CIE-LAB	lab(42.23, 48.04, 28.86)
CIE-LCH	lch(42.23, 56.04, 30.99°)
OKLab	oklab(52.05% 0.1401 0.0671)
OKLCH	oklch(52.05% 0.155 25.6)
XYZ	xyz(20.3362, 12.6520, 4.9849)
Luminance	0.1265 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13A37 #37AEB1

analogous

#B13771 #B13A37 #B17737

triadic

#B13A37 #37B13A #3A37B1

tetradic

#B13A37 #71B137 #37AEB1 #7737B1

square

#B13A37 #71B137 #37AEB1 #7737B1

split-complementary

#B13A37 #37B177 #3771B1

monochromatic

#541B1A #822B28 #B13A37 #CC5C5A #DA8A88

Accessibility & contrast

On white

5.95

#B13A37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#B13A37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13A37

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13A37	#FFFFFF	#000000	##FFFFFF
##B13A37	1.00	5.95	3.53	5.95
#FFFFFF	5.95	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5336

Deuteranopia (green-blind)

#786D33

Tritanopia (blue-blind)

#C21A3A

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b13a37;
/* rgb */ color: rgb(177, 58, 55);
/* oklch */ color: oklch(52.0% 0.155 25.6);

Tailwind

colors: {
  custom: {
    50: '#d0776e',
    500: '#b13a37',
    950: '#000000',
  },
}

SCSS

$custom: #b13a37;
$custom-light: #d0776e;
$custom-dark: #000000;

JSON

{
  "hex": "#b13a37",
  "rgb": {
    "r": 177,
    "g": 58,
    "b": 55
  },
  "hsl": {
    "h": 1.475,
    "s": 52.586,
    "l": 45.49
  },
  "oklch": {
    "l": 0.52049,
    "c": 0.15533,
    "h": 25.6
  },
  "luminance": 0.12649
}

Semantic roles & 50–950 ramp

primary

#B13A37

secondary

#80C2C4

accent

#D8DC4C

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150907

muted

#837B7A

Preview Lab

Preview with #B13A37

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

Preview Lab → · Contrast checker → · Palette generator →