#B23A21#B23A21

#B23A21 is a mid, vivid red. Relative luminance 0.126; OKLCH L 51.9% C 0.160 H 33.5°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#B23A21
RGB	rgb(178, 58, 33)
HSL	hsl(10, 69%, 41%)
HSV	hsv(10, 81%, 70%)
CMYK	cmyk(0%, 67.4%, 81.5%, 30.2%)
CIE-LAB	lab(42.16, 47.45, 41.17)
CIE-LCH	lch(42.16, 62.82, 40.95°)
OKLab	oklab(51.95% 0.1337 0.0885)
OKLCH	oklch(51.95% 0.16 33.5)
XYZ	xyz(20.1500, 12.6039, 2.8103)
Luminance	0.1260 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23A21 #2199B2

analogous

#B22151 #B23A21 #B28321

triadic

#B23A21 #21B23A #3A21B2

tetradic

#B23A21 #51B221 #2199B2 #8321B2

square

#B23A21 #51B221 #2199B2 #8321B2

split-complementary

#B23A21 #21B283 #2151B2

monochromatic

#4B180E #7E2917 #B23A21 #DA5336 #E37F6A

Accessibility & contrast

On white

5.97

#B23A21 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#B23A21 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23A21

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23A21	#FFFFFF	#000000	##FFFFFF
##B23A21	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D531D

Deuteranopia (green-blind)

#7B6D1C

Tritanopia (blue-blind)

#C41335

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b23a21;
/* rgb */ color: rgb(178, 58, 33);
/* oklch */ color: oklch(51.9% 0.160 33.5);

Tailwind

colors: {
  custom: {
    50: '#d2775e',
    500: '#b23a21',
    950: '#000000',
  },
}

SCSS

$custom: #b23a21;
$custom-light: #d2775e;
$custom-dark: #000000;

JSON

{
  "hex": "#b23a21",
  "rgb": {
    "r": 178,
    "g": 58,
    "b": 33
  },
  "hsl": {
    "h": 10.345,
    "s": 68.72,
    "l": 41.373
  },
  "oklch": {
    "l": 0.51946,
    "c": 0.16032,
    "h": 33.5
  },
  "luminance": 0.12601
}

Semantic roles & 50–950 ramp

primary

#B23A21

secondary

#66B8C9

accent

#CDEC3C

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B23A21

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

Preview Lab → · Contrast checker → · Palette generator →