#B4182F#B4182F

#B4182F is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.6% C 0.187 H 21.2°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#B4182F
RGB	rgb(180, 24, 47)
HSL	hsl(351, 76%, 40%)
HSV	hsv(351, 87%, 71%)
CMYK	cmyk(0%, 86.7%, 73.9%, 29.4%)
CIE-LAB	lab(38.84, 59.35, 29.81)
CIE-LCH	lch(38.84, 66.42, 26.67°)
OKLab	oklab(49.59% 0.1739 0.0675)
OKLCH	oklch(49.59% 0.187 21.2)
XYZ	xyz(19.6645, 10.5650, 3.6926)
Luminance	0.1056 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4182F #18B49D

analogous

#B4187D #B4182F #B44F18

triadic

#B4182F #2FB418 #182FB4

tetradic

#B4182F #7DB418 #18B49D #4F18B4

square

#B4182F #7DB418 #18B49D #4F18B4

split-complementary

#B4182F #18B44F #187DB4

monochromatic

#480A13 #7E1121 #B4182F #E22743 #E95D72

Accessibility & contrast

On white

6.75

#B4182F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#B4182F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4182F

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4182F	#FFFFFF	#000000	##FFFFFF
##B4182F	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D472E

Deuteranopia (green-blind)

#726729

Tritanopia (blue-blind)

#C60023

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b4182f;
/* rgb */ color: rgb(180, 24, 47);
/* oklch */ color: oklch(49.6% 0.187 21.2);

Tailwind

colors: {
  custom: {
    50: '#d46967',
    500: '#b4182f',
    950: '#000000',
  },
}

SCSS

$custom: #b4182f;
$custom-light: #d46967;
$custom-dark: #000000;

JSON

{
  "hex": "#b4182f",
  "rgb": {
    "r": 180,
    "g": 24,
    "b": 47
  },
  "hsl": {
    "h": 351.154,
    "s": 76.471,
    "l": 40
  },
  "oklch": {
    "l": 0.49591,
    "c": 0.18654,
    "h": 21.2
  },
  "luminance": 0.10562
}

Semantic roles & 50–950 ramp

primary

#B4182F

secondary

#5BCDBC

accent

#F3D735

background

#FEF6F6

surface

#FCECEB

border

#D5C7C6

text

#160706

muted

#847A7A

Preview Lab

Preview with #B4182F

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

Preview Lab → · Contrast checker → · Palette generator →