#B8313B#B8313B

#B8313B is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.4% C 0.171 H 21.6°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#B8313B
RGB	rgb(184, 49, 59)
HSL	hsl(356, 58%, 46%)
HSV	hsv(356, 73%, 72%)
CMYK	cmyk(0%, 73.4%, 67.9%, 27.8%)
CIE-LAB	lab(42.32, 54.03, 26.84)
CIE-LCH	lch(42.32, 60.33, 26.42°)
OKLab	oklab(52.37% 0.159 0.0629)
OKLCH	oklch(52.37% 0.171 21.6)
XYZ	xyz(21.6573, 12.7060, 5.4490)
Luminance	0.1270 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B8313B #31B8AE

analogous

#B8317E #B8313B #B86B31

triadic

#B8313B #3BB831 #313BB8

tetradic

#B8313B #7EB831 #31B8AE #6B31B8

square

#B8313B #7EB831 #31B8AE #6B31B8

split-complementary

#B8313B #31B86B #317EB8

monochromatic

#57171C #88242C #B8313B #D2555E #DE858C

Accessibility & contrast

On white

5.93

#B8313B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B8313B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B8313B

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B8313B	#FFFFFF	#000000	##FFFFFF
##B8313B	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#57523A

Deuteranopia (green-blind)

#796E37

Tritanopia (blue-blind)

#CA0036

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b8313b;
/* rgb */ color: rgb(184, 49, 59);
/* oklch */ color: oklch(52.4% 0.171 21.6);

Tailwind

colors: {
  custom: {
    50: '#d57371',
    500: '#b8313b',
    950: '#000000',
  },
}

SCSS

$custom: #b8313b;
$custom-light: #d57371;
$custom-dark: #000000;

JSON

{
  "hex": "#b8313b",
  "rgb": {
    "r": 184,
    "g": 49,
    "b": 59
  },
  "hsl": {
    "h": 355.556,
    "s": 57.94,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52368,
    "c": 0.17101,
    "h": 21.6
  },
  "luminance": 0.12703
}

Semantic roles & 50–950 ramp

primary

#B8313B

secondary

#7DC8C2

accent

#E1D647

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B8313B

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

Preview Lab → · Contrast checker → · Palette generator →