#B33130#B33130

#B33130 is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.3% C 0.167 H 25.7°. Best body text is #FFFFFF at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#B33130
RGB	rgb(179, 49, 48)
HSL	hsl(0, 58%, 45%)
HSV	hsv(0, 73%, 70%)
CMYK	cmyk(0%, 72.6%, 73.2%, 29.8%)
CIE-LAB	lab(41.21, 51.90, 31.90)
CIE-LCH	lch(41.21, 60.92, 31.57°)
OKLab	oklab(51.32% 0.1506 0.0723)
OKLCH	oklch(51.32% 0.167 25.7)
XYZ	xyz(20.2245, 11.9968, 4.0464)
Luminance	0.1199 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33130 #30B2B3

analogous

#B33071 #B33130 #B37330

triadic

#B33130 #30B331 #3130B3

tetradic

#B33130 #71B330 #30B2B3 #7330B3

square

#B33130 #71B330 #30B2B3 #7330B3

split-complementary

#B33130 #30B373 #3071B3

monochromatic

#521716 #832423 #B33130 #D05150 #DD8180

Accessibility & contrast

On white

6.18

#B33130 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#B33130 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33130

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33130	#FFFFFF	#000000	##FFFFFF
##B33130	1.00	6.18	3.40	6.18
#FFFFFF	6.18	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574F2E

Deuteranopia (green-blind)

#776B2B

Tritanopia (blue-blind)

#C50032

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b33130;
/* rgb */ color: rgb(179, 49, 48);
/* oklch */ color: oklch(51.3% 0.167 25.7);

Tailwind

colors: {
  custom: {
    50: '#d27368',
    500: '#b33130',
    950: '#000000',
  },
}

SCSS

$custom: #b33130;
$custom-light: #d27368;
$custom-dark: #000000;

JSON

{
  "hex": "#b33130",
  "rgb": {
    "r": 179,
    "g": 49,
    "b": 48
  },
  "hsl": {
    "h": 0.458,
    "s": 57.709,
    "l": 44.51
  },
  "oklch": {
    "l": 0.51321,
    "c": 0.16705,
    "h": 25.7
  },
  "luminance": 0.11994
}

Semantic roles & 50–950 ramp

primary

#B33130

secondary

#79C5C6

accent

#E0E147

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33130

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

Preview Lab → · Contrast checker → · Palette generator →