#B3313F#B3313F

#B3313F is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.6% C 0.166 H 19.4°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#B3313F
RGB	rgb(179, 49, 63)
HSL	hsl(354, 57%, 45%)
HSV	hsv(354, 73%, 70%)
CMYK	cmyk(0%, 72.6%, 64.8%, 29.8%)
CIE-LAB	lab(41.44, 52.69, 23.09)
CIE-LCH	lch(41.44, 57.53, 23.67°)
OKLab	oklab(51.57% 0.1563 0.0551)
OKLCH	oklch(51.57% 0.166 19.4)
XYZ	xyz(20.5881, 12.1422, 5.9613)
Luminance	0.1214 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3313F #31B3A5

analogous

#B33180 #B3313F #B36431

triadic

#B3313F #3FB331 #313FB3

tetradic

#B3313F #80B331 #31B3A5 #6431B3

square

#B3313F #80B331 #31B3A5 #6431B3

split-complementary

#B3313F #31B364 #3180B3

monochromatic

#53171D #83242E #B3313F #D0525F #DD828C

Accessibility & contrast

On white

6.13

#B3313F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#B3313F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3313F

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3313F	#FFFFFF	#000000	##FFFFFF
##B3313F	1.00	6.13	3.43	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#55503F

Deuteranopia (green-blind)

#766C3B

Tritanopia (blue-blind)

#C40237

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b3313f;
/* rgb */ color: rgb(179, 49, 63);
/* oklch */ color: oklch(51.6% 0.166 19.4);

Tailwind

colors: {
  custom: {
    50: '#d17374',
    500: '#b3313f',
    950: '#000000',
  },
}

SCSS

$custom: #b3313f;
$custom-light: #d17374;
$custom-dark: #000000;

JSON

{
  "hex": "#b3313f",
  "rgb": {
    "r": 179,
    "g": 49,
    "b": 63
  },
  "hsl": {
    "h": 353.538,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51567,
    "c": 0.16569,
    "h": 19.4
  },
  "luminance": 0.12139
}

Semantic roles & 50–950 ramp

primary

#B3313F

secondary

#7AC6BE

accent

#E0D048

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B3313F

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

Preview Lab → · Contrast checker → · Palette generator →