#B33021#B33021

#B33021 is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.0% C 0.170 H 30.3°. Best body text is #FFFFFF at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#B33021
RGB	rgb(179, 48, 33)
HSL	hsl(6, 69%, 42%)
HSV	hsv(6, 82%, 70%)
CMYK	cmyk(0%, 73.2%, 81.6%, 29.8%)
CIE-LAB	lab(40.91, 51.70, 40.03)
CIE-LCH	lch(40.91, 65.39, 37.75°)
OKLab	oklab(51.05% 0.1468 0.0859)
OKLCH	oklch(51.05% 0.17 30.3)
XYZ	xyz(19.9242, 11.8105, 2.6691)
Luminance	0.1181 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33021 #21A4B3

analogous

#B3215B #B33021 #B37921

triadic

#B33021 #21B330 #3021B3

tetradic

#B33021 #5BB321 #21A4B3 #7921B3

square

#B33021 #5BB321 #21A4B3 #7921B3

split-complementary

#B33021 #21B379 #215BB3

monochromatic

#4C140E #7F2217 #B33021 #DA4837 #E4776B

Accessibility & contrast

On white

6.25

#B33021 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#B33021 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33021

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33021	#FFFFFF	#000000	##FFFFFF
##B33021	1.00	6.25	3.36	6.25
#FFFFFF	6.25	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#584E1E

Deuteranopia (green-blind)

#786B1B

Tritanopia (blue-blind)

#C5002E

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b33021;
/* rgb */ color: rgb(179, 48, 33);
/* oklch */ color: oklch(51.0% 0.170 30.3);

Tailwind

colors: {
  custom: {
    50: '#d3725e',
    500: '#b33021',
    950: '#000000',
  },
}

SCSS

$custom: #b33021;
$custom-light: #d3725e;
$custom-dark: #000000;

JSON

{
  "hex": "#b33021",
  "rgb": {
    "r": 179,
    "g": 48,
    "b": 33
  },
  "hsl": {
    "h": 6.164,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.51046,
    "c": 0.17009,
    "h": 30.3
  },
  "luminance": 0.11807
}

Semantic roles & 50–950 ramp

primary

#B33021

secondary

#66BFCA

accent

#DAEC3C

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160804

muted

#847B79

Preview Lab

Preview with #B33021

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

Preview Lab → · Contrast checker → · Palette generator →