#B41731#B41731

#B41731 is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.6% C 0.187 H 20.4°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#B41731
RGB	rgb(180, 23, 49)
HSL	hsl(350, 77%, 40%)
HSV	hsv(350, 87%, 71%)
CMYK	cmyk(0%, 87.2%, 72.8%, 29.4%)
CIE-LAB	lab(38.80, 59.64, 28.53)
CIE-LCH	lch(38.80, 66.11, 25.57°)
OKLab	oklab(49.57% 0.1753 0.0651)
OKLCH	oklch(49.57% 0.187 20.4)
XYZ	xyz(19.6855, 10.5411, 3.9033)
Luminance	0.1054 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B41731 #17B49A

analogous

#B4177F #B41731 #B44C17

triadic

#B41731 #31B417 #1731B4

tetradic

#B41731 #7FB417 #17B49A #4C17B4

square

#B41731 #7FB417 #17B49A #4C17B4

split-complementary

#B41731 #17B44C #177FB4

monochromatic

#470913 #7E1022 #B41731 #E32545 #EA5B73

Accessibility & contrast

On white

6.76

#B41731 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#B41731 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B41731

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B41731	#FFFFFF	#000000	##FFFFFF
##B41731	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C4630

Deuteranopia (green-blind)

#72672C

Tritanopia (blue-blind)

#C60024

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b41731;
/* rgb */ color: rgb(180, 23, 49);
/* oklch */ color: oklch(49.6% 0.187 20.4);

Tailwind

colors: {
  custom: {
    50: '#d46969',
    500: '#b41731',
    950: '#000000',
  },
}

SCSS

$custom: #b41731;
$custom-light: #d46969;
$custom-dark: #000000;

JSON

{
  "hex": "#b41731",
  "rgb": {
    "r": 180,
    "g": 23,
    "b": 49
  },
  "hsl": {
    "h": 350.064,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.49569,
    "c": 0.18698,
    "h": 20.4
  },
  "luminance": 0.10538
}

Semantic roles & 50–950 ramp

primary

#B41731

secondary

#59CEBA

accent

#F4D434

background

#FEF6F6

surface

#FCECEB

border

#D5C7C6

text

#160706

muted

#847A7A

Preview Lab

Preview with #B41731

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

Preview Lab → · Contrast checker → · Palette generator →