#B33D21#B33D21

#B33D21 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.5% C 0.159 H 34.5°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#B33D21
RGB	rgb(179, 61, 33)
HSL	hsl(12, 69%, 42%)
HSV	hsv(12, 82%, 70%)
CMYK	cmyk(0%, 65.9%, 81.6%, 29.8%)
CIE-LAB	lab(42.81, 46.52, 41.86)
CIE-LCH	lch(42.81, 62.58, 41.98°)
OKLab	oklab(52.47% 0.1307 0.0899)
OKLCH	oklch(52.47% 0.159 34.5)
XYZ	xyz(20.5360, 13.0340, 2.8730)
Luminance	0.1303 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33D21 #2197B3

analogous

#B3214E #B33D21 #B38621

triadic

#B33D21 #21B33D #3D21B3

tetradic

#B33D21 #4EB321 #2197B3 #8621B3

square

#B33D21 #4EB321 #2197B3 #8621B3

split-complementary

#B33D21 #21B386 #214EB3

monochromatic

#4C1A0E #7F2B17 #B33D21 #DA5637 #E4826B

Accessibility & contrast

On white

5.82

#B33D21 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#B33D21 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33D21

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33D21	#FFFFFF	#000000	##FFFFFF
##B33D21	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F551D

Deuteranopia (green-blind)

#7C6F1C

Tritanopia (blue-blind)

#C51A38

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33d21;
/* rgb */ color: rgb(179, 61, 33);
/* oklch */ color: oklch(52.5% 0.159 34.5);

Tailwind

colors: {
  custom: {
    50: '#d2785f',
    500: '#b33d21',
    950: '#000000',
  },
}

SCSS

$custom: #b33d21;
$custom-light: #d2785f;
$custom-dark: #000000;

JSON

{
  "hex": "#b33d21",
  "rgb": {
    "r": 179,
    "g": 61,
    "b": 33
  },
  "hsl": {
    "h": 11.507,
    "s": 68.868,
    "l": 41.569
  },
  "oklch": {
    "l": 0.52472,
    "c": 0.15865,
    "h": 34.5
  },
  "luminance": 0.13031
}

Semantic roles & 50–950 ramp

primary

#B33D21

secondary

#66B7CA

accent

#CAEC3C

background

#FEF7F5

surface

#FCEEE9

border

#D5C9C5

text

#160905

muted

#847B79

Preview Lab

Preview with #B33D21

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

Preview Lab → · Contrast checker → · Palette generator →