#B33D28#B33D28

#B33D28 is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.5% C 0.157 H 32.4°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#B33D28
RGB	rgb(179, 61, 40)
HSL	hsl(9, 63%, 43%)
HSV	hsv(9, 78%, 70%)
CMYK	cmyk(0%, 65.9%, 77.7%, 29.8%)
CIE-LAB	lab(42.88, 46.76, 38.26)
CIE-LCH	lch(42.88, 60.42, 39.29°)
OKLab	oklab(52.54% 0.1328 0.0842)
OKLCH	oklch(52.54% 0.157 32.4)
XYZ	xyz(20.6445, 13.0774, 3.4442)
Luminance	0.1307 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33D28 #289EB3

analogous

#B32858 #B33D28 #B38228

triadic

#B33D28 #28B33D #3D28B3

tetradic

#B33D28 #58B328 #289EB3 #8228B3

square

#B33D28 #58B328 #289EB3 #8228B3

split-complementary

#B33D28 #28B382 #2858B3

monochromatic

#4F1B12 #812C1D #B33D28 #D55943 #E08575

Accessibility & contrast

On white

5.81

#B33D28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#B33D28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33D28

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33D28	#FFFFFF	#000000	##FFFFFF
##B33D28	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5525

Deuteranopia (green-blind)

#7C6F24

Tritanopia (blue-blind)

#C51B39

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33d28;
/* rgb */ color: rgb(179, 61, 40);
/* oklch */ color: oklch(52.5% 0.157 32.4);

Tailwind

colors: {
  custom: {
    50: '#d27863',
    500: '#b33d28',
    950: '#000000',
  },
}

SCSS

$custom: #b33d28;
$custom-light: #d27863;
$custom-dark: #000000;

JSON

{
  "hex": "#b33d28",
  "rgb": {
    "r": 179,
    "g": 61,
    "b": 40
  },
  "hsl": {
    "h": 9.065,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.52541,
    "c": 0.15725,
    "h": 32.4
  },
  "luminance": 0.13074
}

Semantic roles & 50–950 ramp

primary

#B33D28

secondary

#6FBAC8

accent

#CEE641

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B33D28

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

Preview Lab → · Contrast checker → · Palette generator →