#B23333#B23333

#B23333 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.4% C 0.164 H 25.0°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#B23333
RGB	rgb(178, 51, 51)
HSL	hsl(0, 55%, 45%)
HSV	hsv(0, 71%, 70%)
CMYK	cmyk(0%, 71.3%, 71.3%, 30.2%)
CIE-LAB	lab(41.33, 50.97, 30.21)
CIE-LCH	lch(41.33, 59.26, 30.66°)
OKLab	oklab(51.39% 0.1484 0.0693)
OKLCH	oklch(51.39% 0.164 25)
XYZ	xyz(20.1437, 12.0747, 4.4013)
Luminance	0.1207 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23333 #33B2B2

analogous

#B23373 #B23333 #B27333

triadic

#B23333 #33B233 #3333B2

tetradic

#B23333 #73B233 #33B2B2 #7333B2

square

#B23333 #73B233 #33B2B2 #7333B2

split-complementary

#B23333 #33B273 #3373B2

monochromatic

#531818 #822525 #B23333 #CE5454 #DC8484

Accessibility & contrast

On white

6.15

#B23333 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B23333 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23333

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23333	#FFFFFF	#000000	##FFFFFF
##B23333	1.00	6.15	3.41	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575032

Deuteranopia (green-blind)

#776C2F

Tritanopia (blue-blind)

#C40335

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b23333;
/* rgb */ color: rgb(178, 51, 51);
/* oklch */ color: oklch(51.4% 0.164 25.0);

Tailwind

colors: {
  custom: {
    50: '#d1736b',
    500: '#b23333',
    950: '#000000',
  },
}

SCSS

$custom: #b23333;
$custom-light: #d1736b;
$custom-dark: #000000;

JSON

{
  "hex": "#b23333",
  "rgb": {
    "r": 178,
    "g": 51,
    "b": 51
  },
  "hsl": {
    "h": 0,
    "s": 55.459,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51392,
    "c": 0.16379,
    "h": 25
  },
  "luminance": 0.12072
}

Semantic roles & 50–950 ramp

primary

#B23333

secondary

#7CC5C5

accent

#DFDF49

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B23333

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

Preview Lab → · Contrast checker → · Palette generator →