#B13931#B13931

#B13931 is a mid, vivid red. Relative luminance 0.125; OKLCH L 51.8% C 0.157 H 27.7°. Best body text is #FFFFFF at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#B13931
RGB	rgb(177, 57, 49)
HSL	hsl(4, 57%, 44%)
HSV	hsv(4, 72%, 69%)
CMYK	cmyk(0%, 67.8%, 72.3%, 30.6%)
CIE-LAB	lab(42.00, 48.16, 32.12)
CIE-LCH	lch(42.00, 57.88, 33.70°)
OKLab	oklab(51.85% 0.1392 0.0731)
OKLCH	oklch(51.85% 0.157 27.7)
XYZ	xyz(20.1512, 12.4981, 4.2564)
Luminance	0.1250 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13931 #31A9B1

analogous

#B13169 #B13931 #B17931

triadic

#B13931 #31B139 #3931B1

tetradic

#B13931 #69B131 #31A9B1 #7931B1

square

#B13931 #69B131 #31A9B1 #7931B1

split-complementary

#B13931 #31B179 #3169B1

monochromatic

#511A16 #812A24 #B13931 #CF5851 #DC8680

Accessibility & contrast

On white

6.00

#B13931 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#B13931 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13931

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13931	#FFFFFF	#000000	##FFFFFF
##B13931	1.00	6.00	3.50	6.00
#FFFFFF	6.00	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B532F

Deuteranopia (green-blind)

#796D2D

Tritanopia (blue-blind)

#C31638

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b13931;
/* rgb */ color: rgb(177, 57, 49);
/* oklch */ color: oklch(51.8% 0.157 27.7);

Tailwind

colors: {
  custom: {
    50: '#d07669',
    500: '#b13931',
    950: '#000000',
  },
}

SCSS

$custom: #b13931;
$custom-light: #d07669;
$custom-dark: #000000;

JSON

{
  "hex": "#b13931",
  "rgb": {
    "r": 177,
    "g": 57,
    "b": 49
  },
  "hsl": {
    "h": 3.75,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51845,
    "c": 0.15725,
    "h": 27.7
  },
  "luminance": 0.12495
}

Semantic roles & 50–950 ramp

primary

#B13931

secondary

#79C0C5

accent

#D6E048

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B13931

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

Preview Lab → · Contrast checker → · Palette generator →