#B33D31#B33D31

#B33D31 is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.7% C 0.155 H 29.1°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX#B33D31
RGBrgb(179, 61, 49)
HSLhsl(6, 57%, 45%)
HSVhsv(6, 73%, 70%)
CMYKcmyk(0%, 65.9%, 72.6%, 29.8%)
CIE-LABlab(42.98, 47.15, 33.34)
CIE-LCHlch(42.98, 57.75, 35.26°)
OKLaboklab(52.65% 0.1358 0.0757)
OKLCHoklch(52.65% 0.155 29.1)
XYZxyz(20.8158, 13.1459, 4.3465)
Luminance0.1314 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#B33D31 #31A7B3
analogous
#B33166 #B33D31 #B37E31
triadic
#B33D31 #31B33D #3D31B3
tetradic
#B33D31 #66B331 #31A7B3 #7E31B3
square
#B33D31 #66B331 #31A7B3 #7E31B3
split-complementary
#B33D31 #31B37E #3166B3
monochromatic
#531C17 #832D24 #B33D31 #D05D52 #DD8A82

Accessibility & contrast

On white

5.79
#B33D31 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

3.63
#B33D31 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33D31
5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##B33D31#FFFFFF#000000##FFFFFF
##B33D311.005.793.635.79
#FFFFFF5.791.0021.001.00
#0000003.6321.001.0021.00
##FFFFFF5.791.0021.001.00

Color blindness preview

Protanopia (red-blind)
#5E552F
Deuteranopia (green-blind)
#7B6F2D
Tritanopia (blue-blind)
#C51D3B
Achromatopsia (no color)
#656565

Design tokens & code

CSS
--color: #b33d31;
/* rgb */ color: rgb(179, 61, 49);
/* oklch */ color: oklch(52.7% 0.155 29.1);
Tailwind
colors: {
  custom: {
    50: '#d1796a',
    500: '#b33d31',
    950: '#000000',
  },
}
SCSS
$custom: #b33d31;
$custom-light: #d1796a;
$custom-dark: #000000;
JSON
{
  "hex": "#b33d31",
  "rgb": {
    "r": 179,
    "g": 61,
    "b": 49
  },
  "hsl": {
    "h": 5.538,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.52651,
    "c": 0.15549,
    "h": 29.1
  },
  "luminance": 0.13143
}

Semantic roles & 50–950 ramp

primary
#B33D31
secondary
#7ABFC6
accent
#D2E048
background
#FDF7F6
surface
#FBEEEB
border
#D4C9C6
text
#150906
muted
#837B7A

Preview Lab

Preview with #B33D31

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

Preview Lab → · Contrast checker → · Palette generator →

#B33D31 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva