#B33F33#B33F33

#B33F33 is a mid, vivid red. Relative luminance 0.134; OKLCH L 52.9% C 0.153 H 29.1°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#B33F33
RGB	rgb(179, 63, 51)
HSL	hsl(6, 56%, 45%)
HSV	hsv(6, 72%, 70%)
CMYK	cmyk(0%, 64.8%, 71.5%, 29.8%)
CIE-LAB	lab(43.33, 46.38, 32.59)
CIE-LCH	lch(43.33, 56.68, 35.09°)
OKLab	oklab(52.92% 0.1338 0.0745)
OKLCH	oklch(52.92% 0.153 29.1)
XYZ	xyz(20.9677, 13.3807, 4.6100)
Luminance	0.1338 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33F33 #33A7B3

analogous

#B33367 #B33F33 #B37F33

triadic

#B33F33 #33B33F #3F33B3

tetradic

#B33F33 #67B333 #33A7B3 #7F33B3

square

#B33F33 #67B333 #33A7B3 #7F33B3

split-complementary

#B33F33 #33B37F #3367B3

monochromatic

#541D18 #832E25 #B33F33 #CE6055 #DC8D84

Accessibility & contrast

On white

5.71

#B33F33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#B33F33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33F33

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33F33	#FFFFFF	#000000	##FFFFFF
##B33F33	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F5631

Deuteranopia (green-blind)

#7C702F

Tritanopia (blue-blind)

#C5223D

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b33f33;
/* rgb */ color: rgb(179, 63, 51);
/* oklch */ color: oklch(52.9% 0.153 29.1);

Tailwind

colors: {
  custom: {
    50: '#d17a6b',
    500: '#b33f33',
    950: '#000000',
  },
}

SCSS

$custom: #b33f33;
$custom-light: #d17a6b;
$custom-dark: #000000;

JSON

{
  "hex": "#b33f33",
  "rgb": {
    "r": 179,
    "g": 63,
    "b": 51
  },
  "hsl": {
    "h": 5.625,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.52922,
    "c": 0.15313,
    "h": 29.1
  },
  "luminance": 0.13378
}

Semantic roles & 50–950 ramp

primary

#B33F33

secondary

#7CBFC6

accent

#D1DF49

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150A06

muted

#837C7A

Preview Lab

Preview with #B33F33

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

Preview Lab → · Contrast checker → · Palette generator →