#B23A2B#B23A2B

#B23A2B is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.1% C 0.158 H 30.3°. Best body text is #FFFFFF at 5.94:1 contrast (WCAG AA passes).

Color values

HEX	#B23A2B
RGB	rgb(178, 58, 43)
HSL	hsl(7, 61%, 43%)
HSV	hsv(7, 76%, 70%)
CMYK	cmyk(0%, 67.4%, 75.8%, 30.2%)
CIE-LAB	lab(42.26, 47.81, 35.90)
CIE-LCH	lch(42.26, 59.79, 36.90°)
OKLab	oklab(52.05% 0.1368 0.0799)
OKLCH	oklch(52.05% 0.158 30.3)
XYZ	xyz(20.3115, 12.6685, 3.6608)
Luminance	0.1267 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23A2B #2BA3B2

analogous

#B22B5F #B23A2B #B27D2B

triadic

#B23A2B #2BB23A #3A2BB2

tetradic

#B23A2B #5FB22B #2BA3B2 #7D2BB2

square

#B23A2B #5FB22B #2BA3B2 #7D2BB2

split-complementary

#B23A2B #2BB27D #2B5FB2

monochromatic

#4F1A13 #812A1F #B23A2B #D35748 #DF8479

Accessibility & contrast

On white

5.94

#B23A2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#B23A2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23A2B

5.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23A2B	#FFFFFF	#000000	##FFFFFF
##B23A2B	1.00	5.94	3.53	5.94
#FFFFFF	5.94	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5328

Deuteranopia (green-blind)

#7A6D27

Tritanopia (blue-blind)

#C41637

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b23a2b;
/* rgb */ color: rgb(178, 58, 43);
/* oklch */ color: oklch(52.1% 0.158 30.3);

Tailwind

colors: {
  custom: {
    50: '#d17765',
    500: '#b23a2b',
    950: '#000000',
  },
}

SCSS

$custom: #b23a2b;
$custom-light: #d17765;
$custom-dark: #000000;

JSON

{
  "hex": "#b23a2b",
  "rgb": {
    "r": 178,
    "g": 58,
    "b": 43
  },
  "hsl": {
    "h": 6.667,
    "s": 61.086,
    "l": 43.333
  },
  "oklch": {
    "l": 0.52052,
    "c": 0.15843,
    "h": 30.3
  },
  "luminance": 0.12666
}

Semantic roles & 50–950 ramp

primary

#B23A2B

secondary

#72BDC7

accent

#D2E444

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B23A2B

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

Preview Lab → · Contrast checker → · Palette generator →