#B3213F#B3213F

#B3213F is a mid, vivid red. Relative luminance 0.110; OKLCH L 50.2% C 0.180 H 16.1°. Best body text is #FFFFFF at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#B3213F
RGB	rgb(179, 33, 63)
HSL	hsl(348, 69%, 42%)
HSV	hsv(348, 82%, 70%)
CMYK	cmyk(0%, 81.6%, 64.8%, 29.8%)
CIE-LAB	lab(39.64, 57.75, 20.77)
CIE-LCH	lch(39.64, 61.37, 19.79°)
OKLab	oklab(50.23% 0.1725 0.0499)
OKLCH	oklch(50.23% 0.18 16.1)
XYZ	xyz(20.0337, 11.0334, 5.7765)
Luminance	0.1103 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3213F #21B395

analogous

#B32188 #B3213F #B34C21

triadic

#B3213F #3FB321 #213FB3

tetradic

#B3213F #88B321 #21B395 #4C21B3

square

#B3213F #88B321 #21B395 #4C21B3

split-complementary

#B3213F #21B34C #2188B3

monochromatic

#4C0E1B #7F172D #B3213F #DA3759 #E46B84

Accessibility & contrast

On white

6.55

#B3213F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#B3213F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3213F

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3213F	#FFFFFF	#000000	##FFFFFF
##B3213F	1.00	6.55	3.21	6.55
#FFFFFF	6.55	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D4A3F

Deuteranopia (green-blind)

#72683B

Tritanopia (blue-blind)

#C5002E

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b3213f;
/* rgb */ color: rgb(179, 33, 63);
/* oklch */ color: oklch(50.2% 0.180 16.1);

Tailwind

colors: {
  custom: {
    50: '#d26c73',
    500: '#b3213f',
    950: '#000000',
  },
}

SCSS

$custom: #b3213f;
$custom-light: #d26c73;
$custom-dark: #000000;

JSON

{
  "hex": "#b3213f",
  "rgb": {
    "r": 179,
    "g": 33,
    "b": 63
  },
  "hsl": {
    "h": 347.671,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.50229,
    "c": 0.17954,
    "h": 16.1
  },
  "luminance": 0.1103
}

Semantic roles & 50–950 ramp

primary

#B3213F

secondary

#66CAB5

accent

#ECC83C

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150808

muted

#837B7B

Preview Lab

Preview with #B3213F

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

Preview Lab → · Contrast checker → · Palette generator →