#B4153B#B4153B

#B4153B is a mid, vivid red. Relative luminance 0.106; OKLCH L 49.6% C 0.188 H 16.3°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#B4153B
RGB	rgb(180, 21, 59)
HSL	hsl(346, 79%, 39%)
HSV	hsv(346, 88%, 71%)
CMYK	cmyk(0%, 88.3%, 67.2%, 29.4%)
CIE-LAB	lab(38.83, 60.49, 22.30)
CIE-LCH	lch(38.83, 64.47, 20.24°)
OKLab	oklab(49.64% 0.1803 0.0528)
OKLCH	oklch(49.64% 0.188 16.3)
XYZ	xyz(19.8823, 10.5586, 5.1280)
Luminance	0.1056 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B4153B #15B48E

analogous

#B4158B #B4153B #B43E15

triadic

#B4153B #3BB415 #153BB4

tetradic

#B4153B #8BB415 #15B48E #3E15B4

square

#B4153B #8BB415 #15B48E #3E15B4

split-complementary

#B4153B #15B43E #158BB4

monochromatic

#460817 #7D0F29 #B4153B #E52150 #EC587B

Accessibility & contrast

On white

6.75

#B4153B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#B4153B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B4153B

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B4153B	#FFFFFF	#000000	##FFFFFF
##B4153B	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)

#4A473B

Deuteranopia (green-blind)

#716736

Tritanopia (blue-blind)

#C60027

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #b4153b;
/* rgb */ color: rgb(180, 21, 59);
/* oklch */ color: oklch(49.6% 0.188 16.3);

Tailwind

colors: {
  custom: {
    50: '#d36970',
    500: '#b4153b',
    950: '#000000',
  },
}

SCSS

$custom: #b4153b;
$custom-light: #d36970;
$custom-dark: #000000;

JSON

{
  "hex": "#b4153b",
  "rgb": {
    "r": 180,
    "g": 21,
    "b": 59
  },
  "hsl": {
    "h": 345.66,
    "s": 79.104,
    "l": 39.412
  },
  "oklch": {
    "l": 0.49644,
    "c": 0.1879,
    "h": 16.3
  },
  "luminance": 0.10555
}

Semantic roles & 50–950 ramp

primary

#B4153B

secondary

#56CFB2

accent

#F6C732

background

#FEF6F6

surface

#FCECEC

border

#D5C7C7

text

#160707

muted

#847A7A

Preview Lab

Preview with #B4153B

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

Preview Lab → · Contrast checker → · Palette generator →