#B23F40#B23F40

#B23F40 is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.0% C 0.150 H 23.3°. Best body text is #FFFFFF at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#B23F40
RGB	rgb(178, 63, 64)
HSL	hsl(359, 48%, 47%)
HSV	hsv(359, 65%, 70%)
CMYK	cmyk(0%, 64.6%, 64%, 30.2%)
CIE-LAB	lab(43.35, 46.77, 24.87)
CIE-LCH	lch(43.35, 52.97, 28.00°)
OKLab	oklab(52.96% 0.1378 0.0593)
OKLCH	oklch(52.96% 0.15 23.3)
XYZ	xyz(21.0651, 13.3930, 6.3254)
Luminance	0.1339 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23F40 #3FB2B1

analogous

#B23F7A #B23F40 #B2773F

triadic

#B23F40 #40B23F #3F40B2

tetradic

#B23F40 #7AB23F #3FB2B1 #773FB2

square

#B23F40 #7AB23F #3FB2B1 #773FB2

split-complementary

#B23F40 #3FB277 #3F7AB2

monochromatic

#581F1F #852F30 #B23F40 #C96666 #D99393

Accessibility & contrast

On white

5.71

#B23F40 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#B23F40 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23F40

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23F40	#FFFFFF	#000000	##FFFFFF
##B23F40	1.00	5.71	3.68	5.71
#FFFFFF	5.71	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D573F

Deuteranopia (green-blind)

#7A703D

Tritanopia (blue-blind)

#C32540

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b23f40;
/* rgb */ color: rgb(178, 63, 64);
/* oklch */ color: oklch(53.0% 0.150 23.3);

Tailwind

colors: {
  custom: {
    50: '#d07a75',
    500: '#b23f40',
    950: '#000000',
  },
}

SCSS

$custom: #b23f40;
$custom-light: #d07a75;
$custom-dark: #000000;

JSON

{
  "hex": "#b23f40",
  "rgb": {
    "r": 178,
    "g": 63,
    "b": 64
  },
  "hsl": {
    "h": 359.478,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.52964,
    "c": 0.14998,
    "h": 23.3
  },
  "luminance": 0.1339
}

Semantic roles & 50–950 ramp

primary

#B23F40

secondary

#89C4C3

accent

#D7D650

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150A08

muted

#837C7B

Preview Lab

Preview with #B23F40

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

Preview Lab → · Contrast checker → · Palette generator →