#B23331#B23331

#B23331 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.4% C 0.164 H 25.8°. Best body text is #FFFFFF at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#B23331
RGB	rgb(178, 51, 49)
HSL	hsl(1, 57%, 45%)
HSV	hsv(1, 72%, 70%)
CMYK	cmyk(0%, 71.3%, 72.5%, 30.2%)
CIE-LAB	lab(41.31, 50.88, 31.37)
CIE-LCH	lch(41.31, 59.77, 31.66°)
OKLab	oklab(51.36% 0.1477 0.0715)
OKLCH	oklch(51.36% 0.164 25.8)
XYZ	xyz(20.1005, 12.0574, 4.1740)
Luminance	0.1205 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23331 #31B0B2

analogous

#B23170 #B23331 #B27431

triadic

#B23331 #31B233 #3331B2

tetradic

#B23331 #70B231 #31B0B2 #7431B2

square

#B23331 #70B231 #31B0B2 #7431B2

split-complementary

#B23331 #31B274 #3170B2

monochromatic

#521817 #822524 #B23331 #CF5351 #DC8281

Accessibility & contrast

On white

6.16

#B23331 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B23331 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23331

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23331	#FFFFFF	#000000	##FFFFFF
##B23331	1.00	6.16	3.41	6.16
#FFFFFF	6.16	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575030

Deuteranopia (green-blind)

#776B2D

Tritanopia (blue-blind)

#C40134

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b23331;
/* rgb */ color: rgb(178, 51, 49);
/* oklch */ color: oklch(51.4% 0.164 25.8);

Tailwind

colors: {
  custom: {
    50: '#d17369',
    500: '#b23331',
    950: '#000000',
  },
}

SCSS

$custom: #b23331;
$custom-light: #d17369;
$custom-dark: #000000;

JSON

{
  "hex": "#b23331",
  "rgb": {
    "r": 178,
    "g": 51,
    "b": 49
  },
  "hsl": {
    "h": 0.93,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51363,
    "c": 0.16405,
    "h": 25.8
  },
  "luminance": 0.12054
}

Semantic roles & 50–950 ramp

primary

#B23331

secondary

#79C4C5

accent

#DEE048

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B23331

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

Preview Lab → · Contrast checker → · Palette generator →