#B33F28#B33F28

#B33F28 is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.8% C 0.155 H 33.1°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#B33F28
RGB	rgb(179, 63, 40)
HSL	hsl(10, 63%, 43%)
HSV	hsv(10, 78%, 70%)
CMYK	cmyk(0%, 64.8%, 77.7%, 29.8%)
CIE-LAB	lab(43.20, 45.89, 38.60)
CIE-LCH	lch(43.20, 59.97, 40.07°)
OKLab	oklab(52.79% 0.1301 0.0849)
OKLCH	oklch(52.79% 0.155 33.1)
XYZ	xyz(20.7532, 13.2949, 3.4805)
Luminance	0.1329 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33F28 #289CB3

analogous

#B32856 #B33F28 #B38428

triadic

#B33F28 #28B33F #3F28B3

tetradic

#B33F28 #56B328 #289CB3 #8428B3

square

#B33F28 #56B328 #289CB3 #8428B3

split-complementary

#B33F28 #28B384 #2856B3

monochromatic

#4F1C12 #812D1D #B33F28 #D55B43 #E08775

Accessibility & contrast

On white

5.74

#B33F28 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#B33F28 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33F28

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33F28	#FFFFFF	#000000	##FFFFFF
##B33F28	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#605625

Deuteranopia (green-blind)

#7D7024

Tritanopia (blue-blind)

#C51F3A

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b33f28;
/* rgb */ color: rgb(179, 63, 40);
/* oklch */ color: oklch(52.8% 0.155 33.1);

Tailwind

colors: {
  custom: {
    50: '#d27a63',
    500: '#b33f28',
    950: '#000000',
  },
}

SCSS

$custom: #b33f28;
$custom-light: #d27a63;
$custom-dark: #000000;

JSON

{
  "hex": "#b33f28",
  "rgb": {
    "r": 179,
    "g": 63,
    "b": 40
  },
  "hsl": {
    "h": 9.928,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.52785,
    "c": 0.15536,
    "h": 33.1
  },
  "luminance": 0.13292
}

Semantic roles & 50–950 ramp

primary

#B33F28

secondary

#6FB9C8

accent

#CBE641

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B33F28

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

Preview Lab → · Contrast checker → · Palette generator →