#B23121#B23121

#B23121 is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.0% C 0.168 H 30.6°. Best body text is #FFFFFF at 6.26:1 contrast (WCAG AA passes).

Color values

HEX	#B23121
RGB	rgb(178, 49, 33)
HSL	hsl(7, 69%, 41%)
HSV	hsv(7, 81%, 70%)
CMYK	cmyk(0%, 72.5%, 81.5%, 30.2%)
CIE-LAB	lab(40.86, 51.01, 39.91)
CIE-LCH	lch(40.86, 64.77, 38.04°)
OKLab	oklab(50.97% 0.1448 0.0857)
OKLCH	oklch(50.97% 0.168 30.6)
XYZ	xyz(19.7353, 11.7745, 2.6721)
Luminance	0.1177 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23121 #21A2B2

analogous

#B2215A #B23121 #B27A21

triadic

#B23121 #21B231 #3121B2

tetradic

#B23121 #5AB221 #21A2B2 #7A21B2

square

#B23121 #5AB221 #21A2B2 #7A21B2

split-complementary

#B23121 #21B27A #215AB2

monochromatic

#4B150E #7E2317 #B23121 #DA4836 #E3776A

Accessibility & contrast

On white

6.26

#B23121 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#B23121 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23121

6.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23121	#FFFFFF	#000000	##FFFFFF
##B23121	1.00	6.26	3.35	6.26
#FFFFFF	6.26	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584E1E

Deuteranopia (green-blind)

#786B1B

Tritanopia (blue-blind)

#C4002F

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b23121;
/* rgb */ color: rgb(178, 49, 33);
/* oklch */ color: oklch(51.0% 0.168 30.6);

Tailwind

colors: {
  custom: {
    50: '#d2725e',
    500: '#b23121',
    950: '#000000',
  },
}

SCSS

$custom: #b23121;
$custom-light: #d2725e;
$custom-dark: #000000;

JSON

{
  "hex": "#b23121",
  "rgb": {
    "r": 178,
    "g": 49,
    "b": 33
  },
  "hsl": {
    "h": 6.621,
    "s": 68.72,
    "l": 41.373
  },
  "oklch": {
    "l": 0.50968,
    "c": 0.16824,
    "h": 30.6
  },
  "luminance": 0.11771
}

Semantic roles & 50–950 ramp

primary

#B23121

secondary

#66BEC9

accent

#D8EC3C

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B23121

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

Preview Lab → · Contrast checker → · Palette generator →