#B01F23#B01F23

#B01F23 is a mid, vivid red. Relative luminance 0.103; OKLCH L 49.1% C 0.180 H 25.9°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#B01F23
RGB	rgb(176, 31, 35)
HSL	hsl(358, 70%, 41%)
HSV	hsv(358, 82%, 69%)
CMYK	cmyk(0%, 82.4%, 80.1%, 31%)
CIE-LAB	lab(38.44, 56.17, 36.26)
CIE-LCH	lch(38.44, 66.86, 32.85°)
OKLab	oklab(49.1% 0.1616 0.0786)
OKLCH	oklch(49.1% 0.18 25.9)
XYZ	xyz(18.7002, 10.3345, 2.5999)
Luminance	0.1033 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B01F23 #1FB0AC

analogous

#B01F6B #B01F23 #B0631F

triadic

#B01F23 #23B01F #1F23B0

tetradic

#B01F23 #6BB01F #1FB0AC #631FB0

square

#B01F23 #6BB01F #1FB0AC #631FB0

split-complementary

#B01F23 #1FB063 #1F6BB0

monochromatic

#480D0E #7C1619 #B01F23 #DB3136 #E46569

Accessibility & contrast

On white

6.85

#B01F23 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#B01F23 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B01F23

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B01F23	#FFFFFF	#000000	##FFFFFF
##B01F23	1.00	6.85	3.07	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E4721

Deuteranopia (green-blind)

#72661C

Tritanopia (blue-blind)

#C20023

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #b01f23;
/* rgb */ color: rgb(176, 31, 35);
/* oklch */ color: oklch(49.1% 0.180 25.9);

Tailwind

colors: {
  custom: {
    50: '#d16b5f',
    500: '#b01f23',
    950: '#000000',
  },
}

SCSS

$custom: #b01f23;
$custom-light: #d16b5f;
$custom-dark: #000000;

JSON

{
  "hex": "#b01f23",
  "rgb": {
    "r": 176,
    "g": 31,
    "b": 35
  },
  "hsl": {
    "h": 358.345,
    "s": 70.048,
    "l": 40.588
  },
  "oklch": {
    "l": 0.49103,
    "c": 0.17969,
    "h": 25.9
  },
  "luminance": 0.10331
}

Semantic roles & 50–950 ramp

primary

#B01F23

secondary

#62C9C6

accent

#EDE83B

background

#FEF6F5

surface

#FCECE9

border

#D5C7C5

text

#160704

muted

#847A79

Preview Lab

Preview with #B01F23

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

Preview Lab → · Contrast checker → · Palette generator →