#B33828#B33828

#B33828 is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.0% C 0.162 H 30.6°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#B33828
RGB	rgb(179, 56, 40)
HSL	hsl(7, 63%, 43%)
HSV	hsv(7, 78%, 70%)
CMYK	cmyk(0%, 68.7%, 77.7%, 29.8%)
CIE-LAB	lab(42.11, 48.86, 37.45)
CIE-LCH	lch(42.11, 61.56, 37.47°)
OKLab	oklab(51.96% 0.1393 0.0825)
OKLCH	oklch(51.96% 0.162 30.6)
XYZ	xyz(20.3899, 12.5683, 3.3594)
Luminance	0.1257 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33828 #28A3B3

analogous

#B3285E #B33828 #B37D28

triadic

#B33828 #28B338 #3828B3

tetradic

#B33828 #5EB328 #28A3B3 #7D28B3

square

#B33828 #5EB328 #28A3B3 #7D28B3

split-complementary

#B33828 #28B37D #285EB3

monochromatic

#4F1912 #81281D #B33828 #D55443 #E08275

Accessibility & contrast

On white

5.98

#B33828 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#B33828 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33828

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33828	#FFFFFF	#000000	##FFFFFF
##B33828	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5225

Deuteranopia (green-blind)

#7A6D23

Tritanopia (blue-blind)

#C50F35

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b33828;
/* rgb */ color: rgb(179, 56, 40);
/* oklch */ color: oklch(52.0% 0.162 30.6);

Tailwind

colors: {
  custom: {
    50: '#d27663',
    500: '#b33828',
    950: '#000000',
  },
}

SCSS

$custom: #b33828;
$custom-light: #d27663;
$custom-dark: #000000;

JSON

{
  "hex": "#b33828",
  "rgb": {
    "r": 179,
    "g": 56,
    "b": 40
  },
  "hsl": {
    "h": 6.906,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.5196,
    "c": 0.16191,
    "h": 30.6
  },
  "luminance": 0.12565
}

Semantic roles & 50–950 ramp

primary

#B33828

secondary

#6FBDC8

accent

#D3E641

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160905

muted

#847B79

Preview Lab

Preview with #B33828

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

Preview Lab → · Contrast checker → · Palette generator →