#B33B28#B33B28

#B33B28 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.3% C 0.159 H 31.6°. Best body text is #FFFFFF at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#B33B28
RGB	rgb(179, 59, 40)
HSL	hsl(8, 63%, 43%)
HSV	hsv(8, 78%, 70%)
CMYK	cmyk(0%, 67%, 77.7%, 29.8%)
CIE-LAB	lab(42.56, 47.62, 37.93)
CIE-LCH	lch(42.56, 60.88, 38.54°)
OKLab	oklab(52.3% 0.1355 0.0835)
OKLCH	oklch(52.3% 0.159 31.6)
XYZ	xyz(20.5397, 12.8679, 3.4093)
Luminance	0.1286 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33B28 #28A0B3

analogous

#B3285B #B33B28 #B38028

triadic

#B33B28 #28B33B #3B28B3

tetradic

#B33B28 #5BB328 #28A0B3 #8028B3

square

#B33B28 #5BB328 #28A0B3 #8028B3

split-complementary

#B33B28 #28B380 #285BB3

monochromatic

#4F1A12 #812B1D #B33B28 #D55743 #E08475

Accessibility & contrast

On white

5.88

#B33B28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#B33B28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33B28

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33B28	#FFFFFF	#000000	##FFFFFF
##B33B28	1.00	5.88	3.57	5.88
#FFFFFF	5.88	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5425

Deuteranopia (green-blind)

#7B6E23

Tritanopia (blue-blind)

#C51737

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b33b28;
/* rgb */ color: rgb(179, 59, 40);
/* oklch */ color: oklch(52.3% 0.159 31.6);

Tailwind

colors: {
  custom: {
    50: '#d27763',
    500: '#b33b28',
    950: '#000000',
  },
}

SCSS

$custom: #b33b28;
$custom-light: #d27763;
$custom-dark: #000000;

JSON

{
  "hex": "#b33b28",
  "rgb": {
    "r": 179,
    "g": 59,
    "b": 40
  },
  "hsl": {
    "h": 8.201,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.52304,
    "c": 0.15912,
    "h": 31.6
  },
  "luminance": 0.12865
}

Semantic roles & 50–950 ramp

primary

#B33B28

secondary

#6FBCC8

accent

#D0E641

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B33B28

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

Preview Lab → · Contrast checker → · Palette generator →