#B23730#B23730

#B23730 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.8% C 0.160 H 27.4°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#B23730
RGB	rgb(178, 55, 48)
HSL	hsl(3, 58%, 44%)
HSV	hsv(3, 73%, 70%)
CMYK	cmyk(0%, 69.1%, 73%, 30.2%)
CIE-LAB	lab(41.87, 49.26, 32.60)
CIE-LCH	lch(41.87, 59.07, 33.49°)
OKLab	oklab(51.78% 0.1424 0.0739)
OKLCH	oklch(51.78% 0.16 27.4)
XYZ	xyz(20.2620, 12.4137, 4.1249)
Luminance	0.1241 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23730 #30ABB2

analogous

#B2306A #B23730 #B27830

triadic

#B23730 #30B237 #3730B2

tetradic

#B23730 #6AB230 #30ABB2 #7830B2

square

#B23730 #6AB230 #30ABB2 #7830B2

split-complementary

#B23730 #30B278 #306AB2

monochromatic

#521916 #822823 #B23730 #D05650 #DD8580

Accessibility & contrast

On white

6.03

#B23730 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B23730 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23730

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23730	#FFFFFF	#000000	##FFFFFF
##B23730	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A522E

Deuteranopia (green-blind)

#796D2C

Tritanopia (blue-blind)

#C41036

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b23730;
/* rgb */ color: rgb(178, 55, 48);
/* oklch */ color: oklch(51.8% 0.160 27.4);

Tailwind

colors: {
  custom: {
    50: '#d17569',
    500: '#b23730',
    950: '#000000',
  },
}

SCSS

$custom: #b23730;
$custom-light: #d17569;
$custom-dark: #000000;

JSON

{
  "hex": "#b23730",
  "rgb": {
    "r": 178,
    "g": 55,
    "b": 48
  },
  "hsl": {
    "h": 3.231,
    "s": 57.522,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51777,
    "c": 0.16042,
    "h": 27.4
  },
  "luminance": 0.12411
}

Semantic roles & 50–950 ramp

primary

#B23730

secondary

#78C1C6

accent

#D8E147

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B23730

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

Preview Lab → · Contrast checker → · Palette generator →