#B3313B#B3313B

#B3313B is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.5% C 0.166 H 21.2°. Best body text is #FFFFFF at 6.14:1 contrast (WCAG AA passes).

Color values

HEX	#B3313B
RGB	rgb(179, 49, 59)
HSL	hsl(355, 57%, 45%)
HSV	hsv(355, 73%, 70%)
CMYK	cmyk(0%, 72.6%, 67%, 29.8%)
CIE-LAB	lab(41.37, 52.46, 25.47)
CIE-LCH	lch(41.37, 58.31, 25.89°)
OKLab	oklab(51.49% 0.1547 0.06)
OKLCH	oklch(51.49% 0.166 21.2)
XYZ	xyz(20.4803, 12.0991, 5.3938)
Luminance	0.1210 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3313B #31B3A9

analogous

#B3317C #B3313B #B36831

triadic

#B3313B #3BB331 #313BB3

tetradic

#B3313B #7CB331 #31B3A9 #6831B3

square

#B3313B #7CB331 #31B3A9 #6831B3

split-complementary

#B3313B #31B368 #317CB3

monochromatic

#53171B #83242B #B3313B #D0525B #DD8289

Accessibility & contrast

On white

6.14

#B3313B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#B3313B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3313B

6.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3313B	#FFFFFF	#000000	##FFFFFF
##B3313B	1.00	6.14	3.42	6.14
#FFFFFF	6.14	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#56503A

Deuteranopia (green-blind)

#766C37

Tritanopia (blue-blind)

#C50036

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b3313b;
/* rgb */ color: rgb(179, 49, 59);
/* oklch */ color: oklch(51.5% 0.166 21.2);

Tailwind

colors: {
  custom: {
    50: '#d17371',
    500: '#b3313b',
    950: '#000000',
  },
}

SCSS

$custom: #b3313b;
$custom-light: #d17371;
$custom-dark: #000000;

JSON

{
  "hex": "#b3313b",
  "rgb": {
    "r": 179,
    "g": 49,
    "b": 59
  },
  "hsl": {
    "h": 355.385,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51494,
    "c": 0.16592,
    "h": 21.2
  },
  "luminance": 0.12096
}

Semantic roles & 50–950 ramp

primary

#B3313B

secondary

#7AC6C0

accent

#E0D548

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B3313B

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

Preview Lab → · Contrast checker → · Palette generator →