#B23F31#B23F31

#B23F31 is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.7% C 0.152 H 29.9°. Best body text is #FFFFFF at 5.76:1 contrast (WCAG AA passes).

Color values

HEX	#B23F31
RGB	rgb(178, 63, 49)
HSL	hsl(7, 57%, 45%)
HSV	hsv(7, 72%, 70%)
CMYK	cmyk(0%, 64.6%, 72.5%, 30.2%)
CIE-LAB	lab(43.13, 45.93, 33.46)
CIE-LCH	lch(43.13, 56.82, 36.08°)
OKLab	oklab(52.73% 0.1321 0.076)
OKLCH	oklch(52.73% 0.152 29.9)
XYZ	xyz(20.6942, 13.2447, 4.3719)
Luminance	0.1324 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23F31 #31A4B2

analogous

#B23163 #B23F31 #B28031

triadic

#B23F31 #31B23F #3F31B2

tetradic

#B23F31 #63B231 #31A4B2 #8031B2

square

#B23F31 #63B231 #31A4B2 #8031B2

split-complementary

#B23F31 #31B280 #3163B2

monochromatic

#521D17 #822E24 #B23F31 #CF5F51 #DC8B81

Accessibility & contrast

On white

5.76

#B23F31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#B23F31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23F31

5.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23F31	#FFFFFF	#000000	##FFFFFF
##B23F31	1.00	5.76	3.65	5.76
#FFFFFF	5.76	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F562F

Deuteranopia (green-blind)

#7B6F2D

Tritanopia (blue-blind)

#C4223C

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b23f31;
/* rgb */ color: rgb(178, 63, 49);
/* oklch */ color: oklch(52.7% 0.152 29.9);

Tailwind

colors: {
  custom: {
    50: '#d07a6a',
    500: '#b23f31',
    950: '#000000',
  },
}

SCSS

$custom: #b23f31;
$custom-light: #d07a6a;
$custom-dark: #000000;

JSON

{
  "hex": "#b23f31",
  "rgb": {
    "r": 178,
    "g": 63,
    "b": 49
  },
  "hsl": {
    "h": 6.512,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.52729,
    "c": 0.15242,
    "h": 29.9
  },
  "luminance": 0.13242
}

Semantic roles & 50–950 ramp

primary

#B23F31

secondary

#79BDC5

accent

#D0E048

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B23F31

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

Preview Lab → · Contrast checker → · Palette generator →