#B3331F#B3331F

#B3331F is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.3% C 0.168 H 31.7°. Best body text is #FFFFFF at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#B3331F
RGB	rgb(179, 51, 31)
HSL	hsl(8, 70%, 41%)
HSV	hsv(8, 83%, 70%)
CMYK	cmyk(0%, 71.5%, 82.7%, 29.8%)
CIE-LAB	lab(41.30, 50.53, 41.44)
CIE-LCH	lch(41.30, 65.35, 39.36°)
OKLab	oklab(51.33% 0.1428 0.0882)
OKLCH	oklch(51.33% 0.168 31.7)
XYZ	xyz(20.0239, 12.0534, 2.5682)
Luminance	0.1205 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3331F #1F9FB3

analogous

#B31F55 #B3331F #B37D1F

triadic

#B3331F #1FB333 #331FB3

tetradic

#B3331F #55B31F #1F9FB3 #7D1FB3

square

#B3331F #55B31F #1F9FB3 #7D1FB3

split-complementary

#B3331F #1FB37D #1F55B3

monochromatic

#4B150D #7F2416 #B3331F #DC4A33 #E57968

Accessibility & contrast

On white

6.16

#B3331F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B3331F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3331F

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3331F	#FFFFFF	#000000	##FFFFFF
##B3331F	1.00	6.16	3.41	6.16
#FFFFFF	6.16	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#594F1B

Deuteranopia (green-blind)

#796C18

Tritanopia (blue-blind)

#C50030

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b3331f;
/* rgb */ color: rgb(179, 51, 31);
/* oklch */ color: oklch(51.3% 0.168 31.7);

Tailwind

colors: {
  custom: {
    50: '#d3735d',
    500: '#b3331f',
    950: '#000000',
  },
}

SCSS

$custom: #b3331f;
$custom-light: #d3735d;
$custom-dark: #000000;

JSON

{
  "hex": "#b3331f",
  "rgb": {
    "r": 179,
    "g": 51,
    "b": 31
  },
  "hsl": {
    "h": 8.108,
    "s": 70.476,
    "l": 41.176
  },
  "oklch": {
    "l": 0.51331,
    "c": 0.16787,
    "h": 31.7
  },
  "luminance": 0.1205
}

Semantic roles & 50–950 ramp

primary

#B3331F

secondary

#64BCCA

accent

#D5ED3B

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B3331F

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

Preview Lab → · Contrast checker → · Palette generator →