#B33F21#B33F21

#B33F21 is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.7% C 0.157 H 35.3°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#B33F21
RGB	rgb(179, 63, 33)
HSL	hsl(12, 69%, 42%)
HSV	hsv(12, 82%, 70%)
CMYK	cmyk(0%, 64.8%, 81.6%, 29.8%)
CIE-LAB	lab(43.14, 45.64, 42.17)
CIE-LCH	lch(43.14, 62.15, 42.74°)
OKLab	oklab(52.72% 0.128 0.0906)
OKLCH	oklch(52.72% 0.157 35.3)
XYZ	xyz(20.6448, 13.2515, 2.9093)
Luminance	0.1325 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33F21 #2195B3

analogous

#B3214C #B33F21 #B38821

triadic

#B33F21 #21B33F #3F21B3

tetradic

#B33F21 #4CB321 #2195B3 #8821B3

square

#B33F21 #4CB321 #2195B3 #8821B3

split-complementary

#B33F21 #21B388 #214CB3

monochromatic

#4C1B0E #7F2D17 #B33F21 #DA5937 #E4846B

Accessibility & contrast

On white

5.75

#B33F21 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#B33F21 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33F21

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33F21	#FFFFFF	#000000	##FFFFFF
##B33F21	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#60561C

Deuteranopia (green-blind)

#7D6F1C

Tritanopia (blue-blind)

#C51E39

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b33f21;
/* rgb */ color: rgb(179, 63, 33);
/* oklch */ color: oklch(52.7% 0.157 35.3);

Tailwind

colors: {
  custom: {
    50: '#d2795f',
    500: '#b33f21',
    950: '#000000',
  },
}

SCSS

$custom: #b33f21;
$custom-light: #d2795f;
$custom-dark: #000000;

JSON

{
  "hex": "#b33f21",
  "rgb": {
    "r": 179,
    "g": 63,
    "b": 33
  },
  "hsl": {
    "h": 12.329,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.52716,
    "c": 0.15684,
    "h": 35.3
  },
  "luminance": 0.13249
}

Semantic roles & 50–950 ramp

primary

#B33F21

secondary

#66B5CA

accent

#C8EC3C

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160905

muted

#847B79

Preview Lab

Preview with #B33F21

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

Preview Lab → · Contrast checker → · Palette generator →