#B3243F#B3243F

#B3243F is a mid, vivid red. Relative luminance 0.112; OKLCH L 50.4% C 0.177 H 16.6°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#B3243F
RGB	rgb(179, 36, 63)
HSL	hsl(349, 67%, 42%)
HSV	hsv(349, 80%, 70%)
CMYK	cmyk(0%, 79.9%, 64.8%, 29.8%)
CIE-LAB	lab(39.93, 56.92, 21.15)
CIE-LCH	lch(39.93, 60.73, 20.38°)
OKLab	oklab(50.44% 0.1698 0.0507)
OKLCH	oklch(50.44% 0.177 16.6)
XYZ	xyz(20.1207, 11.2074, 5.8055)
Luminance	0.1120 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3243F #24B398

analogous

#B32487 #B3243F #B35024

triadic

#B3243F #3FB324 #243FB3

tetradic

#B3243F #87B324 #24B398 #5024B3

square

#B3243F #87B324 #24B398 #5024B3

split-complementary

#B3243F #24B350 #2487B3

monochromatic

#4D101B #801A2D #B3243F #D83C5A #E26F85

Accessibility & contrast

On white

6.48

#B3243F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#B3243F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3243F

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3243F	#FFFFFF	#000000	##FFFFFF
##B3243F	1.00	6.48	3.24	6.48
#FFFFFF	6.48	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E4B3F

Deuteranopia (green-blind)

#72693B

Tritanopia (blue-blind)

#C50030

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #b3243f;
/* rgb */ color: rgb(179, 36, 63);
/* oklch */ color: oklch(50.4% 0.177 16.6);

Tailwind

colors: {
  custom: {
    50: '#d16d73',
    500: '#b3243f',
    950: '#000000',
  },
}

SCSS

$custom: #b3243f;
$custom-light: #d16d73;
$custom-dark: #000000;

JSON

{
  "hex": "#b3243f",
  "rgb": {
    "r": 179,
    "g": 36,
    "b": 63
  },
  "hsl": {
    "h": 348.671,
    "s": 66.512,
    "l": 42.157
  },
  "oklch": {
    "l": 0.50444,
    "c": 0.17724,
    "h": 16.6
  },
  "luminance": 0.11204
}

Semantic roles & 50–950 ramp

primary

#B3243F

secondary

#6AC9B7

accent

#E9C93E

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150808

muted

#837B7B

Preview Lab

Preview with #B3243F

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

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