#B23F1F#B23F1F

#B23F1F is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.5% C 0.156 H 35.9°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#B23F1F
RGB	rgb(178, 63, 31)
HSL	hsl(13, 70%, 41%)
HSV	hsv(13, 83%, 70%)
CMYK	cmyk(0%, 64.6%, 82.6%, 30.2%)
CIE-LAB	lab(42.95, 45.22, 42.91)
CIE-LCH	lch(42.95, 62.34, 43.50°)
OKLab	oklab(52.53% 0.1265 0.0916)
OKLCH	oklch(52.53% 0.156 35.9)
XYZ	xyz(20.3872, 13.1219, 2.7553)
Luminance	0.1312 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23F1F #1F92B2

analogous

#B21F48 #B23F1F #B2881F

triadic

#B23F1F #1FB23F #3F1FB2

tetradic

#B23F1F #48B21F #1F92B2 #881FB2

square

#B23F1F #48B21F #1F92B2 #881FB2

split-complementary

#B23F1F #1FB288 #1F48B2

monochromatic

#4A1A0D #7E2D16 #B23F1F #DB5733 #E58267

Accessibility & contrast

On white

5.80

#B23F1F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#B23F1F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23F1F

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23F1F	#FFFFFF	#000000	##FFFFFF
##B23F1F	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#60551A

Deuteranopia (green-blind)

#7C6F1A

Tritanopia (blue-blind)

#C41F39

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b23f1f;
/* rgb */ color: rgb(178, 63, 31);
/* oklch */ color: oklch(52.5% 0.156 35.9);

Tailwind

colors: {
  custom: {
    50: '#d2795e',
    500: '#b23f1f',
    950: '#000000',
  },
}

SCSS

$custom: #b23f1f;
$custom-light: #d2795e;
$custom-dark: #000000;

JSON

{
  "hex": "#b23f1f",
  "rgb": {
    "r": 178,
    "g": 63,
    "b": 31
  },
  "hsl": {
    "h": 13.061,
    "s": 70.335,
    "l": 40.98
  },
  "oklch": {
    "l": 0.52532,
    "c": 0.15619,
    "h": 35.9
  },
  "luminance": 0.13119
}

Semantic roles & 50–950 ramp

primary

#B23F1F

secondary

#63B3CA

accent

#C6ED3B

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B23F1F

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

Preview Lab → · Contrast checker → · Palette generator →