#B23721#B23721

#B23721 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.6% C 0.163 H 32.5°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#B23721
RGB	rgb(178, 55, 33)
HSL	hsl(9, 69%, 41%)
HSV	hsv(9, 81%, 70%)
CMYK	cmyk(0%, 69.1%, 81.5%, 30.2%)
CIE-LAB	lab(41.70, 48.68, 40.73)
CIE-LCH	lch(41.70, 63.47, 39.92°)
OKLab	oklab(51.6% 0.1375 0.0875)
OKLCH	oklch(51.6% 0.163 32.5)
XYZ	xyz(20.0031, 12.3102, 2.7614)
Luminance	0.1231 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B23721 #219CB2

analogous

#B22154 #B23721 #B28021

triadic

#B23721 #21B237 #3721B2

tetradic

#B23721 #54B221 #219CB2 #8021B2

square

#B23721 #54B221 #219CB2 #8021B2

split-complementary

#B23721 #21B280 #2154B2

monochromatic

#4B170E #7E2717 #B23721 #DA4F36 #E37C6A

Accessibility & contrast

On white

6.07

#B23721 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#B23721 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B23721

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B23721	#FFFFFF	#000000	##FFFFFF
##B23721	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B511D

Deuteranopia (green-blind)

#7A6C1B

Tritanopia (blue-blind)

#C40A33

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b23721;
/* rgb */ color: rgb(178, 55, 33);
/* oklch */ color: oklch(51.6% 0.163 32.5);

Tailwind

colors: {
  custom: {
    50: '#d2755e',
    500: '#b23721',
    950: '#000000',
  },
}

SCSS

$custom: #b23721;
$custom-light: #d2755e;
$custom-dark: #000000;

JSON

{
  "hex": "#b23721",
  "rgb": {
    "r": 178,
    "g": 55,
    "b": 33
  },
  "hsl": {
    "h": 9.103,
    "s": 68.72,
    "l": 41.373
  },
  "oklch": {
    "l": 0.51604,
    "c": 0.16301,
    "h": 32.5
  },
  "luminance": 0.12307
}

Semantic roles & 50–950 ramp

primary

#B23721

secondary

#66BAC9

accent

#D1EC3C

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B23721

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

Preview Lab → · Contrast checker → · Palette generator →