#B23E1F#B23E1F

#B23E1F is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.4% C 0.157 H 35.5°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#B23E1F
RGB	rgb(178, 62, 31)
HSL	hsl(13, 70%, 41%)
HSV	hsv(13, 83%, 70%)
CMYK	cmyk(0%, 65.2%, 82.6%, 30.2%)
CIE-LAB	lab(42.78, 45.67, 42.76)
CIE-LCH	lch(42.78, 62.56, 43.12°)
OKLab	oklab(52.41% 0.1279 0.0913)
OKLCH	oklch(52.41% 0.157 35.5)
XYZ	xyz(20.3324, 13.0121, 2.7370)
Luminance	0.1301 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23E1F #1F93B2

analogous

#B21F49 #B23E1F #B2871F

triadic

#B23E1F #1FB23E #3E1FB2

tetradic

#B23E1F #49B21F #1F93B2 #871FB2

square

#B23E1F #49B21F #1F93B2 #871FB2

split-complementary

#B23E1F #1FB287 #1F49B2

monochromatic

#4A1A0D #7E2C16 #B23E1F #DB5633 #E58167

Accessibility & contrast

On white

5.83

#B23E1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#B23E1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23E1F

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23E1F	#FFFFFF	#000000	##FFFFFF
##B23E1F	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F551A

Deuteranopia (green-blind)

#7C6F1A

Tritanopia (blue-blind)

#C41D38

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b23e1f;
/* rgb */ color: rgb(178, 62, 31);
/* oklch */ color: oklch(52.4% 0.157 35.5);

Tailwind

colors: {
  custom: {
    50: '#d2795d',
    500: '#b23e1f',
    950: '#000000',
  },
}

SCSS

$custom: #b23e1f;
$custom-light: #d2795d;
$custom-dark: #000000;

JSON

{
  "hex": "#b23e1f",
  "rgb": {
    "r": 178,
    "g": 62,
    "b": 31
  },
  "hsl": {
    "h": 12.653,
    "s": 70.335,
    "l": 40.98
  },
  "oklch": {
    "l": 0.52408,
    "c": 0.15709,
    "h": 35.5
  },
  "luminance": 0.13009
}

Semantic roles & 50–950 ramp

primary

#B23E1F

secondary

#63B4CA

accent

#C7ED3B

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B23E1F

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

Preview Lab → · Contrast checker → · Palette generator →