#B03540#B03540

#B03540 is a mid, vivid red. Relative luminance 0.121; OKLCH L 51.5% C 0.159 H 19.8°. Best body text is #FFFFFF at 6.12:1 contrast (WCAG AA passes).

Color values

HEX	#B03540
RGB	rgb(176, 53, 64)
HSL	hsl(355, 54%, 45%)
HSV	hsv(355, 70%, 69%)
CMYK	cmyk(0%, 69.9%, 63.6%, 31%)
CIE-LAB	lab(41.45, 50.28, 22.38)
CIE-LCH	lch(41.45, 55.03, 23.99°)
OKLab	oklab(51.48% 0.1491 0.0537)
OKLCH	oklch(51.48% 0.159 19.8)
XYZ	xyz(20.1051, 12.1493, 6.1359)
Luminance	0.1215 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B03540 #35B0A5

analogous

#B0357E #B03540 #B06735

triadic

#B03540 #40B035 #3540B0

tetradic

#B03540 #7EB035 #35B0A5 #6735B0

square

#B03540 #7EB035 #35B0A5 #6735B0

split-complementary

#B03540 #35B067 #357EB0

monochromatic

#52191E #81272F #B03540 #CC5661 #DA858D

Accessibility & contrast

On white

6.12

#B03540 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#B03540 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B03540

6.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B03540	#FFFFFF	#000000	##FFFFFF
##B03540	1.00	6.12	3.43	6.12
#FFFFFF	6.12	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#565140

Deuteranopia (green-blind)

#756B3D

Tritanopia (blue-blind)

#C1133A

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b03540;
/* rgb */ color: rgb(176, 53, 64);
/* oklch */ color: oklch(51.5% 0.159 19.8);

Tailwind

colors: {
  custom: {
    50: '#ce7474',
    500: '#b03540',
    950: '#000000',
  },
}

SCSS

$custom: #b03540;
$custom-light: #ce7474;
$custom-dark: #000000;

JSON

{
  "hex": "#b03540",
  "rgb": {
    "r": 176,
    "g": 53,
    "b": 64
  },
  "hsl": {
    "h": 354.634,
    "s": 53.712,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51479,
    "c": 0.15852,
    "h": 19.8
  },
  "luminance": 0.12146
}

Semantic roles & 50–950 ramp

primary

#B03540

secondary

#7DC4BE

accent

#DDD04B

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B03540

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

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