#B33F3E#B33F3E

#B33F3E is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.1% C 0.151 H 24.3°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#B33F3E
RGB	rgb(179, 63, 62)
HSL	hsl(1, 49%, 47%)
HSV	hsv(1, 65%, 70%)
CMYK	cmyk(0%, 64.8%, 65.4%, 29.8%)
CIE-LAB	lab(43.49, 46.99, 26.29)
CIE-LCH	lch(43.49, 53.84, 29.23°)
OKLab	oklab(53.09% 0.138 0.0622)
OKLCH	oklch(53.09% 0.151 24.3)
XYZ	xyz(21.2395, 13.4894, 6.0418)
Luminance	0.1349 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33F3E #3EB2B3

analogous

#B33E77 #B33F3E #B37A3E

triadic

#B33F3E #3EB33F #3F3EB3

tetradic

#B33F3E #77B33E #3EB2B3 #7A3EB3

square

#B33F3E #77B33E #3EB2B3 #7A3EB3

split-complementary

#B33F3E #3EB37A #3E77B3

monochromatic

#581F1F #862F2E #B33F3E #CA6665 #D99392

Accessibility & contrast

On white

5.68

#B33F3E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#B33F3E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33F3E

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33F3E	#FFFFFF	#000000	##FFFFFF
##B33F3E	1.00	5.68	3.70	5.68
#FFFFFF	5.68	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E573D

Deuteranopia (green-blind)

#7B703B

Tritanopia (blue-blind)

#C42440

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b33f3e;
/* rgb */ color: rgb(179, 63, 62);
/* oklch */ color: oklch(53.1% 0.151 24.3);

Tailwind

colors: {
  custom: {
    50: '#d07a73',
    500: '#b33f3e',
    950: '#000000',
  },
}

SCSS

$custom: #b33f3e;
$custom-light: #d07a73;
$custom-dark: #000000;

JSON

{
  "hex": "#b33f3e",
  "rgb": {
    "r": 179,
    "g": 63,
    "b": 62
  },
  "hsl": {
    "h": 0.513,
    "s": 48.548,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53093,
    "c": 0.15134,
    "h": 24.3
  },
  "luminance": 0.13487
}

Semantic roles & 50–950 ramp

primary

#B33F3E

secondary

#88C4C5

accent

#D7D850

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150A08

muted

#837C7B

Preview Lab

Preview with #B33F3E

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

Preview Lab → · Contrast checker → · Palette generator →