#B01C21#B01C21

#B01C21 is a mid, vivid red. Relative luminance 0.102; OKLCH L 48.9% C 0.182 H 26.0°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#B01C21
RGB	rgb(176, 28, 33)
HSL	hsl(358, 73%, 40%)
HSV	hsv(358, 84%, 69%)
CMYK	cmyk(0%, 84.1%, 81.3%, 31%)
CIE-LAB	lab(38.15, 56.86, 37.11)
CIE-LCH	lch(38.15, 67.89, 33.13°)
OKLab	oklab(48.89% 0.1634 0.0797)
OKLCH	oklch(48.89% 0.182 26)
XYZ	xyz(18.5966, 10.1735, 2.4231)
Luminance	0.1017 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B01C21 #1CB0AB

analogous

#B01C6B #B01C21 #B0611C

triadic

#B01C21 #21B01C #1C21B0

tetradic

#B01C21 #6BB01C #1CB0AB #611CB0

square

#B01C21 #6BB01C #1CB0AB #611CB0

split-complementary

#B01C21 #1CB061 #1C6BB0

monochromatic

#460B0D #7B1417 #B01C21 #DD2C32 #E66165

Accessibility & contrast

On white

6.92

#B01C21 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#B01C21 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B01C21

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B01C21	#FFFFFF	#000000	##FFFFFF
##B01C21	1.00	6.92	3.03	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E451F

Deuteranopia (green-blind)

#71651A

Tritanopia (blue-blind)

#C20020

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #b01c21;
/* rgb */ color: rgb(176, 28, 33);
/* oklch */ color: oklch(48.9% 0.182 26.0);

Tailwind

colors: {
  custom: {
    50: '#d16a5d',
    500: '#b01c21',
    950: '#000000',
  },
}

SCSS

$custom: #b01c21;
$custom-light: #d16a5d;
$custom-dark: #000000;

JSON

{
  "hex": "#b01c21",
  "rgb": {
    "r": 176,
    "g": 28,
    "b": 33
  },
  "hsl": {
    "h": 357.973,
    "s": 72.549,
    "l": 40
  },
  "oklch": {
    "l": 0.48886,
    "c": 0.18177,
    "h": 26
  },
  "luminance": 0.1017
}

Semantic roles & 50–950 ramp

primary

#B01C21

secondary

#5ECAC7

accent

#EFE939

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160704

muted

#847A79

Preview Lab

Preview with #B01C21

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

Preview Lab → · Contrast checker → · Palette generator →