#B0243A#B0243A

#B0243A is a mid, vivid red. Relative luminance 0.108; OKLCH L 49.8% C 0.174 H 18.4°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#B0243A
RGB	rgb(176, 36, 58)
HSL	hsl(351, 66%, 42%)
HSV	hsv(351, 80%, 69%)
CMYK	cmyk(0%, 79.5%, 67%, 31%)
CIE-LAB	lab(39.24, 55.78, 23.29)
CIE-LCH	lch(39.24, 60.45, 22.66°)
OKLab	oklab(49.8% 0.1655 0.0551)
OKLCH	oklch(49.8% 0.174 18.4)
XYZ	xyz(19.3012, 10.8003, 5.0705)
Luminance	0.1080 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B0243A #24B09A

analogous

#B02480 #B0243A #B05424

triadic

#B0243A #3AB024 #243AB0

tetradic

#B0243A #80B024 #24B09A #5424B0

square

#B0243A #80B024 #24B09A #5424B0

split-complementary

#B0243A #24B054 #2480B0

monochromatic

#4A0F19 #7D1A29 #B0243A #D73A53 #E16D7F

Accessibility & contrast

On white

6.65

#B0243A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#B0243A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B0243A

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B0243A	#FFFFFF	#000000	##FFFFFF
##B0243A	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E4A3A

Deuteranopia (green-blind)

#716736

Tritanopia (blue-blind)

#C1002E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b0243a;
/* rgb */ color: rgb(176, 36, 58);
/* oklch */ color: oklch(49.8% 0.174 18.4);

Tailwind

colors: {
  custom: {
    50: '#cf6d70',
    500: '#b0243a',
    950: '#000000',
  },
}

SCSS

$custom: #b0243a;
$custom-light: #cf6d70;
$custom-dark: #000000;

JSON

{
  "hex": "#b0243a",
  "rgb": {
    "r": 176,
    "g": 36,
    "b": 58
  },
  "hsl": {
    "h": 350.571,
    "s": 66.038,
    "l": 41.569
  },
  "oklch": {
    "l": 0.49802,
    "c": 0.17443,
    "h": 18.4
  },
  "luminance": 0.10797
}

Semantic roles & 50–950 ramp

primary

#B0243A

secondary

#68C8B9

accent

#E9CE3F

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150807

muted

#837B7A

Preview Lab

Preview with #B0243A

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

Preview Lab → · Contrast checker → · Palette generator →