#B23831#B23831

#B23831 is a mid, vivid red. Relative luminance 0.125; OKLCH L 51.9% C 0.159 H 27.4°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).

Color values

HEX	#B23831
RGB	rgb(178, 56, 49)
HSL	hsl(3, 57%, 45%)
HSV	hsv(3, 72%, 70%)
CMYK	cmyk(0%, 68.5%, 72.5%, 30.2%)
CIE-LAB	lab(42.03, 48.91, 32.20)
CIE-LCH	lch(42.03, 58.55, 33.36°)
OKLab	oklab(51.9% 0.1415 0.0733)
OKLCH	oklch(51.9% 0.159 27.4)
XYZ	xyz(20.3309, 12.5181, 4.2508)
Luminance	0.1252 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23831 #31ABB2

analogous

#B2316B #B23831 #B27931

triadic

#B23831 #31B238 #3831B2

tetradic

#B23831 #6BB231 #31ABB2 #7931B2

square

#B23831 #6BB231 #31ABB2 #7931B2

split-complementary

#B23831 #31B279 #316BB2

monochromatic

#521A17 #822924 #B23831 #CF5851 #DC8681

Accessibility & contrast

On white

5.99

#B23831 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#B23831 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23831

5.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23831	#FFFFFF	#000000	##FFFFFF
##B23831	1.00	5.99	3.50	5.99
#FFFFFF	5.99	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	5.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A522F

Deuteranopia (green-blind)

#796D2D

Tritanopia (blue-blind)

#C41337

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b23831;
/* rgb */ color: rgb(178, 56, 49);
/* oklch */ color: oklch(51.9% 0.159 27.4);

Tailwind

colors: {
  custom: {
    50: '#d17669',
    500: '#b23831',
    950: '#000000',
  },
}

SCSS

$custom: #b23831;
$custom-light: #d17669;
$custom-dark: #000000;

JSON

{
  "hex": "#b23831",
  "rgb": {
    "r": 178,
    "g": 56,
    "b": 49
  },
  "hsl": {
    "h": 3.256,
    "s": 56.828,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51902,
    "c": 0.1593,
    "h": 27.4
  },
  "luminance": 0.12515
}

Semantic roles & 50–950 ramp

primary

#B23831

secondary

#79C1C5

accent

#D8E048

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B23831

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

Preview Lab → · Contrast checker → · Palette generator →