#B13333#B13333

#B13333 is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.2% C 0.163 H 25.0°. Best body text is #FFFFFF at 6.19:1 contrast (WCAG AA passes).

Color values

HEX	#B13333
RGB	rgb(177, 51, 51)
HSL	hsl(0, 55%, 45%)
HSV	hsv(0, 71%, 69%)
CMYK	cmyk(0%, 71.2%, 71.2%, 30.6%)
CIE-LAB	lab(41.15, 50.65, 29.95)
CIE-LCH	lch(41.15, 58.84, 30.59°)
OKLab	oklab(51.22% 0.1475 0.0688)
OKLCH	oklch(51.22% 0.163 25)
XYZ	xyz(19.9150, 11.9567, 4.3906)
Luminance	0.1195 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13333 #33B1B1

analogous

#B13372 #B13333 #B17233

triadic

#B13333 #33B133 #3333B1

tetradic

#B13333 #72B133 #33B1B1 #7233B1

square

#B13333 #72B133 #33B1B1 #7233B1

split-complementary

#B13333 #33B172 #3372B1

monochromatic

#521818 #812525 #B13333 #CE5454 #DB8383

Accessibility & contrast

On white

6.19

#B13333 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#B13333 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13333

6.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13333	#FFFFFF	#000000	##FFFFFF
##B13333	1.00	6.19	3.39	6.19
#FFFFFF	6.19	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575032

Deuteranopia (green-blind)

#766B2F

Tritanopia (blue-blind)

#C30435

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b13333;
/* rgb */ color: rgb(177, 51, 51);
/* oklch */ color: oklch(51.2% 0.163 25.0);

Tailwind

colors: {
  custom: {
    50: '#d0736b',
    500: '#b13333',
    950: '#000000',
  },
}

SCSS

$custom: #b13333;
$custom-light: #d0736b;
$custom-dark: #000000;

JSON

{
  "hex": "#b13333",
  "rgb": {
    "r": 177,
    "g": 51,
    "b": 51
  },
  "hsl": {
    "h": 0,
    "s": 55.263,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51218,
    "c": 0.16274,
    "h": 25
  },
  "luminance": 0.11954
}

Semantic roles & 50–950 ramp

primary

#B13333

secondary

#7BC5C5

accent

#DFDF49

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B13333

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

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