#B4172E#B4172E

#B4172E is a mid, vivid red. Relative luminance 0.105; OKLCH L 49.5% C 0.187 H 21.4°. Best body text is #FFFFFF at 6.77:1 contrast (WCAG AA passes).

Color values

HEX	#B4172E
RGB	rgb(180, 23, 46)
HSL	hsl(351, 77%, 40%)
HSV	hsv(351, 87%, 71%)
CMYK	cmyk(0%, 87.2%, 74.4%, 29.4%)
CIE-LAB	lab(38.75, 59.51, 30.33)
CIE-LCH	lch(38.75, 66.79, 27.00°)
OKLab	oklab(49.52% 0.1742 0.0684)
OKLCH	oklch(49.52% 0.187 21.4)
XYZ	xyz(19.6243, 10.5166, 3.5809)
Luminance	0.1051 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4172E #17B49D

analogous

#B4177D #B4172E #B44E17

triadic

#B4172E #2EB417 #172EB4

tetradic

#B4172E #7DB417 #17B49D #4E17B4

square

#B4172E #7DB417 #17B49D #4E17B4

split-complementary

#B4172E #17B44E #177DB4

monochromatic

#470912 #7E1020 #B4172E #E32541 #EA5B70

Accessibility & contrast

On white

6.77

#B4172E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#B4172E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4172E

6.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4172E	#FFFFFF	#000000	##FFFFFF
##B4172E	1.00	6.77	3.10	6.77
#FFFFFF	6.77	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C462D

Deuteranopia (green-blind)

#726728

Tritanopia (blue-blind)

#C60022

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b4172e;
/* rgb */ color: rgb(180, 23, 46);
/* oklch */ color: oklch(49.5% 0.187 21.4);

Tailwind

colors: {
  custom: {
    50: '#d46966',
    500: '#b4172e',
    950: '#000000',
  },
}

SCSS

$custom: #b4172e;
$custom-light: #d46966;
$custom-dark: #000000;

JSON

{
  "hex": "#b4172e",
  "rgb": {
    "r": 180,
    "g": 23,
    "b": 46
  },
  "hsl": {
    "h": 351.21,
    "s": 77.34,
    "l": 39.804
  },
  "oklch": {
    "l": 0.49524,
    "c": 0.18713,
    "h": 21.4
  },
  "luminance": 0.10513
}

Semantic roles & 50–950 ramp

primary

#B4172E

secondary

#59CEBD

accent

#F4D834

background

#FEF6F6

surface

#FCECEB

border

#D5C7C6

text

#160706

muted

#847A7A

Preview Lab

Preview with #B4172E

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

Preview Lab → · Contrast checker → · Palette generator →