#BB311A#BB311A

#BB311A is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.5% C 0.178 H 32.0°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#BB311A
RGB	rgb(187, 49, 26)
HSL	hsl(9, 76%, 42%)
HSV	hsv(9, 86%, 73%)
CMYK	cmyk(0%, 73.8%, 86.1%, 26.7%)
CIE-LAB	lab(42.52, 53.73, 45.54)
CIE-LCH	lch(42.52, 70.43, 40.29°)
OKLab	oklab(52.51% 0.1511 0.0946)
OKLCH	oklch(52.51% 0.178 32)
XYZ	xyz(21.7809, 12.8395, 2.3085)
Luminance	0.1284 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB311A #1AA4BB

analogous

#BB1A54 #BB311A #BB811A

triadic

#BB311A #1ABB31 #311ABB

tetradic

#BB311A #54BB1A #1AA4BB #811ABB

square

#BB311A #54BB1A #1AA4BB #811ABB

split-complementary

#BB311A #1ABB81 #1A54BB

monochromatic

#50150B #852313 #BB311A #E24930 #EA7966

Accessibility & contrast

On white

5.89

#BB311A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#BB311A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB311A

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB311A	#FFFFFF	#000000	##FFFFFF
##BB311A	1.00	5.89	3.57	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5115

Deuteranopia (green-blind)

#7D6F11

Tritanopia (blue-blind)

#CE002D

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #bb311a;
/* rgb */ color: rgb(187, 49, 26);
/* oklch */ color: oklch(52.5% 0.178 32.0);

Tailwind

colors: {
  custom: {
    50: '#d9735a',
    500: '#bb311a',
    950: '#000000',
  },
}

SCSS

$custom: #bb311a;
$custom-light: #d9735a;
$custom-dark: #000000;

JSON

{
  "hex": "#bb311a",
  "rgb": {
    "r": 187,
    "g": 49,
    "b": 26
  },
  "hsl": {
    "h": 8.571,
    "s": 75.587,
    "l": 41.765
  },
  "oklch": {
    "l": 0.52506,
    "c": 0.17828,
    "h": 32
  },
  "luminance": 0.12836
}

Semantic roles & 50–950 ramp

primary

#BB311A

secondary

#62BFCF

accent

#D7F236

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#170904

muted

#857B79

Preview Lab

Preview with #BB311A

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

Preview Lab → · Contrast checker → · Palette generator →