#B33E37#B33E37

#B33E37 is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.9% C 0.153 H 27.0°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#B33E37
RGB	rgb(179, 62, 55)
HSL	hsl(3, 53%, 46%)
HSV	hsv(3, 69%, 70%)
CMYK	cmyk(0%, 65.4%, 69.3%, 29.8%)
CIE-LAB	lab(43.22, 47.02, 30.13)
CIE-LCH	lch(43.22, 55.84, 32.65°)
OKLab	oklab(52.86% 0.1367 0.0698)
OKLCH	oklch(52.86% 0.153 27)
XYZ	xyz(21.0048, 13.3078, 5.0763)
Luminance	0.1331 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33E37 #37ACB3

analogous

#B3376E #B33E37 #B37C37

triadic

#B33E37 #37B33E #3E37B3

tetradic

#B33E37 #6EB337 #37ACB3 #7C37B3

square

#B33E37 #6EB337 #37ACB3 #7C37B3

split-complementary

#B33E37 #37B37C #376EB3

monochromatic

#551E1A #842E29 #B33E37 #CD615B #DB8E8A

Accessibility & contrast

On white

5.74

#B33E37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#B33E37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33E37

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33E37	#FFFFFF	#000000	##FFFFFF
##B33E37	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)

#5E5635

Deuteranopia (green-blind)

#7B6F34

Tritanopia (blue-blind)

#C5213D

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b33e37;
/* rgb */ color: rgb(179, 62, 55);
/* oklch */ color: oklch(52.9% 0.153 27.0);

Tailwind

colors: {
  custom: {
    50: '#d1796e',
    500: '#b33e37',
    950: '#000000',
  },
}

SCSS

$custom: #b33e37;
$custom-light: #d1796e;
$custom-dark: #000000;

JSON

{
  "hex": "#b33e37",
  "rgb": {
    "r": 179,
    "g": 62,
    "b": 55
  },
  "hsl": {
    "h": 3.387,
    "s": 52.991,
    "l": 45.882
  },
  "oklch": {
    "l": 0.52858,
    "c": 0.15343,
    "h": 27
  },
  "luminance": 0.13305
}

Semantic roles & 50–950 ramp

primary

#B33E37

secondary

#81C1C5

accent

#D4DC4B

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33E37

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

Preview Lab → · Contrast checker → · Palette generator →