#B23729#B23729

#B23729 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.7% C 0.162 H 30.0°. Best body text is #FFFFFF at 6.05:1 contrast (WCAG AA passes).

Color values

HEX	#B23729
RGB	rgb(178, 55, 41)
HSL	hsl(6, 63%, 43%)
HSV	hsv(6, 77%, 70%)
CMYK	cmyk(0%, 69.1%, 77%, 30.2%)
CIE-LAB	lab(41.78, 48.97, 36.50)
CIE-LCH	lch(41.78, 61.07, 36.70°)
OKLab	oklab(51.69% 0.14 0.0807)
OKLCH	oklch(51.69% 0.162 30)
XYZ	xyz(20.1288, 12.3605, 3.4233)
Luminance	0.1236 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23729 #29A4B2

analogous

#B22960 #B23729 #B27B29

triadic

#B23729 #29B237 #3729B2

tetradic

#B23729 #60B229 #29A4B2 #7B29B2

square

#B23729 #60B229 #29A4B2 #7B29B2

split-complementary

#B23729 #29B27B #2960B2

monochromatic

#4F1812 #80281E #B23729 #D45344 #DF8176

Accessibility & contrast

On white

6.05

#B23729 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B23729 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23729

6.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23729	#FFFFFF	#000000	##FFFFFF
##B23729	1.00	6.05	3.47	6.05
#FFFFFF	6.05	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5126

Deuteranopia (green-blind)

#796C24

Tritanopia (blue-blind)

#C40D35

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b23729;
/* rgb */ color: rgb(178, 55, 41);
/* oklch */ color: oklch(51.7% 0.162 30.0);

Tailwind

colors: {
  custom: {
    50: '#d17564',
    500: '#b23729',
    950: '#000000',
  },
}

SCSS

$custom: #b23729;
$custom-light: #d17564;
$custom-dark: #000000;

JSON

{
  "hex": "#b23729",
  "rgb": {
    "r": 178,
    "g": 55,
    "b": 41
  },
  "hsl": {
    "h": 6.131,
    "s": 62.557,
    "l": 42.941
  },
  "oklch": {
    "l": 0.51688,
    "c": 0.16159,
    "h": 30
  },
  "luminance": 0.12357
}

Semantic roles & 50–950 ramp

primary

#B23729

secondary

#70BEC7

accent

#D5E642

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B23729

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

Preview Lab → · Contrast checker → · Palette generator →