#B23B2B#B23B2B

#B23B2B is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.2% C 0.157 H 30.7°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#B23B2B
RGB	rgb(178, 59, 43)
HSL	hsl(7, 61%, 43%)
HSV	hsv(7, 76%, 70%)
CMYK	cmyk(0%, 66.9%, 75.8%, 30.2%)
CIE-LAB	lab(42.42, 47.39, 36.07)
CIE-LCH	lch(42.42, 59.55, 37.27°)
OKLab	oklab(52.17% 0.1355 0.0803)
OKLCH	oklch(52.17% 0.157 30.7)
XYZ	xyz(20.3624, 12.7703, 3.6777)
Luminance	0.1277 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23B2B #2BA2B2

analogous

#B22B5E #B23B2B #B27E2B

triadic

#B23B2B #2BB23B #3B2BB2

tetradic

#B23B2B #5EB22B #2BA2B2 #7E2BB2

square

#B23B2B #5EB22B #2BA2B2 #7E2BB2

split-complementary

#B23B2B #2BB27E #2B5EB2

monochromatic

#4F1A13 #812B1F #B23B2B #D35848 #DF8579

Accessibility & contrast

On white

5.91

#B23B2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#B23B2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23B2B

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23B2B	#FFFFFF	#000000	##FFFFFF
##B23B2B	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5428

Deuteranopia (green-blind)

#7A6E27

Tritanopia (blue-blind)

#C41838

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b23b2b;
/* rgb */ color: rgb(178, 59, 43);
/* oklch */ color: oklch(52.2% 0.157 30.7);

Tailwind

colors: {
  custom: {
    50: '#d17765',
    500: '#b23b2b',
    950: '#000000',
  },
}

SCSS

$custom: #b23b2b;
$custom-light: #d17765;
$custom-dark: #000000;

JSON

{
  "hex": "#b23b2b",
  "rgb": {
    "r": 178,
    "g": 59,
    "b": 43
  },
  "hsl": {
    "h": 7.111,
    "s": 61.086,
    "l": 43.333
  },
  "oklch": {
    "l": 0.52169,
    "c": 0.15747,
    "h": 30.7
  },
  "luminance": 0.12767
}

Semantic roles & 50–950 ramp

primary

#B23B2B

secondary

#72BDC7

accent

#D1E444

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B23B2B

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

Preview Lab → · Contrast checker → · Palette generator →