#B01F21#B01F21

#B01F21 is a mid, vivid red. Relative luminance 0.103; OKLCH L 49.1% C 0.180 H 26.5°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#B01F21
RGB	rgb(176, 31, 33)
HSL	hsl(359, 70%, 41%)
HSV	hsv(359, 82%, 69%)
CMYK	cmyk(0%, 82.4%, 81.3%, 31%)
CIE-LAB	lab(38.42, 56.11, 37.37)
CIE-LCH	lch(38.42, 67.41, 33.67°)
OKLab	oklab(49.08% 0.161 0.0803)
OKLCH	oklch(49.08% 0.18 26.5)
XYZ	xyz(18.6713, 10.3229, 2.4480)
Luminance	0.1032 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B01F21 #1FB0AE

analogous

#B01F6A #B01F21 #B0651F

triadic

#B01F21 #21B01F #1F21B0

tetradic

#B01F21 #6AB01F #1FB0AE #651FB0

square

#B01F21 #6AB01F #1FB0AE #651FB0

split-complementary

#B01F21 #1FB065 #1F6AB0

monochromatic

#480D0D #7C1617 #B01F21 #DB3134 #E46567

Accessibility & contrast

On white

6.85

#B01F21 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#B01F21 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B01F21

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B01F21	#FFFFFF	#000000	##FFFFFF
##B01F21	1.00	6.85	3.06	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F461F

Deuteranopia (green-blind)

#72661A

Tritanopia (blue-blind)

#C20022

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #b01f21;
/* rgb */ color: rgb(176, 31, 33);
/* oklch */ color: oklch(49.1% 0.180 26.5);

Tailwind

colors: {
  custom: {
    50: '#d16b5d',
    500: '#b01f21',
    950: '#000000',
  },
}

SCSS

$custom: #b01f21;
$custom-light: #d16b5d;
$custom-dark: #000000;

JSON

{
  "hex": "#b01f21",
  "rgb": {
    "r": 176,
    "g": 31,
    "b": 33
  },
  "hsl": {
    "h": 359.172,
    "s": 70.048,
    "l": 40.588
  },
  "oklch": {
    "l": 0.49081,
    "c": 0.1799,
    "h": 26.5
  },
  "luminance": 0.1032
}

Semantic roles & 50–950 ramp

primary

#B01F21

secondary

#62C9C8

accent

#EDEA3B

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160704

muted

#847A79

Preview Lab

Preview with #B01F21

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

Preview Lab → · Contrast checker → · Palette generator →