#B23031#B23031

#B23031 is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.1% C 0.167 H 25.0°. Best body text is #FFFFFF at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#B23031
RGB	rgb(178, 48, 49)
HSL	hsl(360, 58%, 44%)
HSV	hsv(360, 73%, 70%)
CMYK	cmyk(0%, 73%, 72.5%, 30.2%)
CIE-LAB	lab(40.90, 52.00, 30.90)
CIE-LCH	lch(40.90, 60.48, 30.72°)
OKLab	oklab(51.06% 0.1512 0.0704)
OKLCH	oklch(51.06% 0.167 25)
XYZ	xyz(19.9737, 11.8037, 4.1318)
Luminance	0.1180 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23031 #30B2B1

analogous

#B23072 #B23031 #B27030

triadic

#B23031 #31B230 #3031B2

tetradic

#B23031 #72B230 #30B2B1 #7030B2

square

#B23031 #72B230 #30B2B1 #7030B2

split-complementary

#B23031 #30B270 #3072B2

monochromatic

#521616 #822324 #B23031 #D05051 #DD8080

Accessibility & contrast

On white

6.25

#B23031 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#B23031 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23031

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23031	#FFFFFF	#000000	##FFFFFF
##B23031	1.00	6.25	3.36	6.25
#FFFFFF	6.25	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564F30

Deuteranopia (green-blind)

#766B2D

Tritanopia (blue-blind)

#C40032

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b23031;
/* rgb */ color: rgb(178, 48, 49);
/* oklch */ color: oklch(51.1% 0.167 25.0);

Tailwind

colors: {
  custom: {
    50: '#d17269',
    500: '#b23031',
    950: '#000000',
  },
}

SCSS

$custom: #b23031;
$custom-light: #d17269;
$custom-dark: #000000;

JSON

{
  "hex": "#b23031",
  "rgb": {
    "r": 178,
    "g": 48,
    "b": 49
  },
  "hsl": {
    "h": 359.538,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51061,
    "c": 0.16679,
    "h": 25
  },
  "luminance": 0.11801
}

Semantic roles & 50–950 ramp

primary

#B23031

secondary

#78C6C5

accent

#E1E047

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160806

muted

#847B7A

Preview Lab

Preview with #B23031

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

Preview Lab → · Contrast checker → · Palette generator →