#B3303D#B3303D

#B3303D is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.4% C 0.167 H 20.1°. Best body text is #FFFFFF at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#B3303D
RGB	rgb(179, 48, 61)
HSL	hsl(354, 58%, 45%)
HSV	hsv(354, 73%, 70%)
CMYK	cmyk(0%, 73.2%, 65.9%, 29.8%)
CIE-LAB	lab(41.28, 52.93, 24.12)
CIE-LCH	lch(41.28, 58.17, 24.49°)
OKLab	oklab(51.43% 0.1566 0.0572)
OKLCH	oklch(51.43% 0.167 20.1)
XYZ	xyz(20.4918, 12.0376, 5.6584)
Luminance	0.1203 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3303D #30B3A6

analogous

#B3307F #B3303D #B36530

triadic

#B3303D #3DB330 #303DB3

tetradic

#B3303D #7FB330 #30B3A6 #6530B3

square

#B3303D #7FB330 #30B3A6 #6530B3

split-complementary

#B3303D #30B365 #307FB3

monochromatic

#52161C #83232D #B3303D #D0505D #DD808A

Accessibility & contrast

On white

6.16

#B3303D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B3303D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3303D

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3303D	#FFFFFF	#000000	##FFFFFF
##B3303D	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)

#55503C

Deuteranopia (green-blind)

#766B39

Tritanopia (blue-blind)

#C50036

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b3303d;
/* rgb */ color: rgb(179, 48, 61);
/* oklch */ color: oklch(51.4% 0.167 20.1);

Tailwind

colors: {
  custom: {
    50: '#d17272',
    500: '#b3303d',
    950: '#000000',
  },
}

SCSS

$custom: #b3303d;
$custom-light: #d17272;
$custom-dark: #000000;

JSON

{
  "hex": "#b3303d",
  "rgb": {
    "r": 179,
    "g": 48,
    "b": 61
  },
  "hsl": {
    "h": 354.046,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51432,
    "c": 0.16675,
    "h": 20.1
  },
  "luminance": 0.12035
}

Semantic roles & 50–950 ramp

primary

#B3303D

secondary

#79C6BE

accent

#E1D247

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150908

muted

#837B7B

Preview Lab

Preview with #B3303D

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

Preview Lab → · Contrast checker → · Palette generator →