#B23C21#B23C21

#B23C21 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.2% C 0.159 H 34.2°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#B23C21
RGB	rgb(178, 60, 33)
HSL	hsl(11, 69%, 41%)
HSV	hsv(11, 81%, 70%)
CMYK	cmyk(0%, 66.3%, 81.5%, 30.2%)
CIE-LAB	lab(42.47, 46.60, 41.47)
CIE-LCH	lch(42.47, 62.38, 41.67°)
OKLab	oklab(52.18% 0.1311 0.0891)
OKLCH	oklch(52.18% 0.159 34.2)
XYZ	xyz(20.2528, 12.8095, 2.8446)
Luminance	0.1281 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23C21 #2197B2

analogous

#B2214F #B23C21 #B28521

triadic

#B23C21 #21B23C #3C21B2

tetradic

#B23C21 #4FB221 #2197B2 #8521B2

square

#B23C21 #4FB221 #2197B2 #8521B2

split-complementary

#B23C21 #21B285 #214FB2

monochromatic

#4B190E #7E2B17 #B23C21 #DA5536 #E3816A

Accessibility & contrast

On white

5.90

#B23C21 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#B23C21 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23C21

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23C21	#FFFFFF	#000000	##FFFFFF
##B23C21	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E541D

Deuteranopia (green-blind)

#7B6E1C

Tritanopia (blue-blind)

#C41837

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b23c21;
/* rgb */ color: rgb(178, 60, 33);
/* oklch */ color: oklch(52.2% 0.159 34.2);

Tailwind

colors: {
  custom: {
    50: '#d2785f',
    500: '#b23c21',
    950: '#000000',
  },
}

SCSS

$custom: #b23c21;
$custom-light: #d2785f;
$custom-dark: #000000;

JSON

{
  "hex": "#b23c21",
  "rgb": {
    "r": 178,
    "g": 60,
    "b": 33
  },
  "hsl": {
    "h": 11.172,
    "s": 68.72,
    "l": 41.373
  },
  "oklch": {
    "l": 0.52183,
    "c": 0.15851,
    "h": 34.2
  },
  "luminance": 0.12807
}

Semantic roles & 50–950 ramp

primary

#B23C21

secondary

#66B7C9

accent

#CBEC3C

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B23C21

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

Preview Lab → · Contrast checker → · Palette generator →