#B01F33#B01F33

#B01F33 is a mid, vivid red. Relative luminance 0.104; OKLCH L 49.3% C 0.178 H 20.4°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#B01F33
RGB	rgb(176, 31, 51)
HSL	hsl(352, 70%, 41%)
HSV	hsv(352, 82%, 69%)
CMYK	cmyk(0%, 82.4%, 71%, 31%)
CIE-LAB	lab(38.64, 56.80, 26.91)
CIE-LCH	lch(38.64, 62.85, 25.35°)
OKLab	oklab(49.32% 0.1672 0.0621)
OKLCH	oklch(49.32% 0.178 20.4)
XYZ	xyz(18.9942, 10.4521, 4.1487)
Luminance	0.1045 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B01F33 #1FB09C

analogous

#B01F7B #B01F33 #B0531F

triadic

#B01F33 #33B01F #1F33B0

tetradic

#B01F33 #7BB01F #1FB09C #531FB0

square

#B01F33 #7BB01F #1FB09C #531FB0

split-complementary

#B01F33 #1FB053 #1F7BB0

monochromatic

#480D15 #7C1624 #B01F33 #DB3149 #E46577

Accessibility & contrast

On white

6.80

#B01F33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#B01F33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B01F33

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B01F33	#FFFFFF	#000000	##FFFFFF
##B01F33	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D4732

Deuteranopia (green-blind)

#71662E

Tritanopia (blue-blind)

#C20028

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b01f33;
/* rgb */ color: rgb(176, 31, 51);
/* oklch */ color: oklch(49.3% 0.178 20.4);

Tailwind

colors: {
  custom: {
    50: '#d06b6a',
    500: '#b01f33',
    950: '#000000',
  },
}

SCSS

$custom: #b01f33;
$custom-light: #d06b6a;
$custom-dark: #000000;

JSON

{
  "hex": "#b01f33",
  "rgb": {
    "r": 176,
    "g": 31,
    "b": 51
  },
  "hsl": {
    "h": 351.724,
    "s": 70.048,
    "l": 40.588
  },
  "oklch": {
    "l": 0.49321,
    "c": 0.17838,
    "h": 20.4
  },
  "luminance": 0.10449
}

Semantic roles & 50–950 ramp

primary

#B01F33

secondary

#62C9BB

accent

#EDD43B

background

#FDF6F6

surface

#FBECEB

border

#D4C7C6

text

#160806

muted

#847A7A

Preview Lab

Preview with #B01F33

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

Preview Lab → · Contrast checker → · Palette generator →