#B13531#B13531

#B13531 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.4% C 0.161 H 26.4°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#B13531
RGB	rgb(177, 53, 49)
HSL	hsl(2, 57%, 44%)
HSV	hsv(2, 72%, 69%)
CMYK	cmyk(0%, 70.1%, 72.3%, 30.6%)
CIE-LAB	lab(41.40, 49.78, 31.43)
CIE-LCH	lch(41.40, 58.87, 32.27°)
OKLab	oklab(51.4% 0.1443 0.0716)
OKLCH	oklch(51.4% 0.161 26.4)
XYZ	xyz(19.9611, 12.1180, 4.1931)
Luminance	0.1211 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13531 #31ADB1

analogous

#B1316D #B13531 #B17531

triadic

#B13531 #31B135 #3531B1

tetradic

#B13531 #6DB131 #31ADB1 #7531B1

square

#B13531 #6DB131 #31ADB1 #7531B1

split-complementary

#B13531 #31B175 #316DB1

monochromatic

#511816 #812724 #B13531 #CF5451 #DC8380

Accessibility & contrast

On white

6.13

#B13531 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#B13531 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13531

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13531	#FFFFFF	#000000	##FFFFFF
##B13531	1.00	6.13	3.42	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58512F

Deuteranopia (green-blind)

#776C2D

Tritanopia (blue-blind)

#C30B35

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b13531;
/* rgb */ color: rgb(177, 53, 49);
/* oklch */ color: oklch(51.4% 0.161 26.4);

Tailwind

colors: {
  custom: {
    50: '#d07469',
    500: '#b13531',
    950: '#000000',
  },
}

SCSS

$custom: #b13531;
$custom-light: #d07469;
$custom-dark: #000000;

JSON

{
  "hex": "#b13531",
  "rgb": {
    "r": 177,
    "g": 53,
    "b": 49
  },
  "hsl": {
    "h": 1.875,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.514,
    "c": 0.16111,
    "h": 26.4
  },
  "luminance": 0.12115
}

Semantic roles & 50–950 ramp

primary

#B13531

secondary

#79C3C5

accent

#DBE048

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B13531

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

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