#B33B2F#B33B2F

#B33B2F is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.4% C 0.158 H 29.2°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B33B2F
RGB	rgb(179, 59, 47)
HSL	hsl(5, 58%, 44%)
HSV	hsv(5, 74%, 70%)
CMYK	cmyk(0%, 67%, 73.7%, 29.8%)
CIE-LAB	lab(42.64, 47.91, 34.10)
CIE-LCH	lch(42.64, 58.81, 35.44°)
OKLab	oklab(52.39% 0.1378 0.0769)
OKLCH	oklch(52.39% 0.158 29.2)
XYZ	xyz(20.6697, 12.9199, 4.0942)
Luminance	0.1292 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33B2F #2FA7B3

analogous

#B32F65 #B33B2F #B37D2F

triadic

#B33B2F #2FB33B #3B2FB3

tetradic

#B33B2F #65B32F #2FA7B3 #7D2FB3

square

#B33B2F #65B32F #2FA7B3 #7D2FB3

split-complementary

#B33B2F #2FB37D #2F65B3

monochromatic

#521B16 #832B22 #B33B2F #D15A4F #DD887F

Accessibility & contrast

On white

5.86

#B33B2F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#B33B2F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33B2F

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33B2F	#FFFFFF	#000000	##FFFFFF
##B33B2F	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D542D

Deuteranopia (green-blind)

#7B6E2B

Tritanopia (blue-blind)

#C51939

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33b2f;
/* rgb */ color: rgb(179, 59, 47);
/* oklch */ color: oklch(52.4% 0.158 29.2);

Tailwind

colors: {
  custom: {
    50: '#d27868',
    500: '#b33b2f',
    950: '#000000',
  },
}

SCSS

$custom: #b33b2f;
$custom-light: #d27868;
$custom-dark: #000000;

JSON

{
  "hex": "#b33b2f",
  "rgb": {
    "r": 179,
    "g": 59,
    "b": 47
  },
  "hsl": {
    "h": 5.455,
    "s": 58.407,
    "l": 44.314
  },
  "oklch": {
    "l": 0.52388,
    "c": 0.15781,
    "h": 29.2
  },
  "luminance": 0.12917
}

Semantic roles & 50–950 ramp

primary

#B33B2F

secondary

#78BFC6

accent

#D3E246

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B33B2F

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

Preview Lab → · Contrast checker → · Palette generator →