#B23133#B23133

#B23133 is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.2% C 0.166 H 24.5°. Best body text is #FFFFFF at 6.21:1 contrast (WCAG AA passes).

Color values

HEX	#B23133
RGB	rgb(178, 49, 51)
HSL	hsl(359, 57%, 45%)
HSV	hsv(359, 72%, 70%)
CMYK	cmyk(0%, 72.5%, 71.3%, 30.2%)
CIE-LAB	lab(41.06, 51.72, 29.89)
CIE-LCH	lch(41.06, 59.74, 30.03°)
OKLab	oklab(51.19% 0.1508 0.0686)
OKLCH	oklch(51.19% 0.166 24.5)
XYZ	xyz(20.0582, 11.9036, 4.3728)
Luminance	0.1190 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23133 #31B2B0

analogous

#B23174 #B23133 #B27031

triadic

#B23133 #33B231 #3133B2

tetradic

#B23133 #74B231 #31B2B0 #7031B2

square

#B23133 #74B231 #31B2B0 #7031B2

split-complementary

#B23133 #31B270 #3174B2

monochromatic

#521718 #822425 #B23133 #CF5153 #DC8182

Accessibility & contrast

On white

6.21

#B23133 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.38

#B23133 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23133

6.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23133	#FFFFFF	#000000	##FFFFFF
##B23133	1.00	6.21	3.38	6.21
#FFFFFF	6.21	1.00	21.00	1.00
#000000	3.38	21.00	1.00	21.00
##FFFFFF	6.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564F32

Deuteranopia (green-blind)

#766B2F

Tritanopia (blue-blind)

#C40033

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b23133;
/* rgb */ color: rgb(178, 49, 51);
/* oklch */ color: oklch(51.2% 0.166 24.5);

Tailwind

colors: {
  custom: {
    50: '#d1726b',
    500: '#b23133',
    950: '#000000',
  },
}

SCSS

$custom: #b23133;
$custom-light: #d1726b;
$custom-dark: #000000;

JSON

{
  "hex": "#b23133",
  "rgb": {
    "r": 178,
    "g": 49,
    "b": 51
  },
  "hsl": {
    "h": 359.07,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51189,
    "c": 0.16564,
    "h": 24.5
  },
  "luminance": 0.11901
}

Semantic roles & 50–950 ramp

primary

#B23133

secondary

#79C5C4

accent

#E0DE48

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B23133

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

Preview Lab → · Contrast checker → · Palette generator →