#BB3121#BB3121

#BB3121 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.6% C 0.177 H 30.4°. Best body text is #FFFFFF at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#BB3121
RGB	rgb(187, 49, 33)
HSL	hsl(6, 70%, 43%)
HSV	hsv(6, 82%, 73%)
CMYK	cmyk(0%, 73.8%, 82.4%, 26.7%)
CIE-LAB	lab(42.57, 53.91, 42.15)
CIE-LCH	lch(42.57, 68.43, 38.02°)
OKLab	oklab(52.56% 0.1529 0.0898)
OKLCH	oklch(52.56% 0.177 30.4)
XYZ	xyz(21.8690, 12.8747, 2.7721)
Luminance	0.1287 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3121 #21ABBB

analogous

#BB215E #BB3121 #BB7E21

triadic

#BB3121 #21BB31 #3121BB

tetradic

#BB3121 #5EBB21 #21ABBB #7E21BB

square

#BB3121 #5EBB21 #21ABBB #7E21BB

split-complementary

#BB3121 #21BB7E #215EBB

monochromatic

#53160F #872318 #BB3121 #DD4D3D #E67D71

Accessibility & contrast

On white

5.88

#BB3121 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#BB3121 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3121

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3121	#FFFFFF	#000000	##FFFFFF
##BB3121	1.00	5.88	3.57	5.88
#FFFFFF	5.88	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B511D

Deuteranopia (green-blind)

#7D701A

Tritanopia (blue-blind)

#CE002F

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #bb3121;
/* rgb */ color: rgb(187, 49, 33);
/* oklch */ color: oklch(52.6% 0.177 30.4);

Tailwind

colors: {
  custom: {
    50: '#d9735e',
    500: '#bb3121',
    950: '#000000',
  },
}

SCSS

$custom: #bb3121;
$custom-light: #d9735e;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3121",
  "rgb": {
    "r": 187,
    "g": 49,
    "b": 33
  },
  "hsl": {
    "h": 6.234,
    "s": 70,
    "l": 43.137
  },
  "oklch": {
    "l": 0.52563,
    "c": 0.17729,
    "h": 30.4
  },
  "luminance": 0.12871
}

Semantic roles & 50–950 ramp

primary

#BB3121

secondary

#6BC2CC

accent

#DAED3B

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#170904

muted

#857B79

Preview Lab

Preview with #BB3121

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

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