#B13730#B13730

#B13730 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.6% C 0.159 H 27.4°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#B13730
RGB	rgb(177, 55, 48)
HSL	hsl(3, 57%, 44%)
HSV	hsv(3, 73%, 69%)
CMYK	cmyk(0%, 68.9%, 72.9%, 30.6%)
CIE-LAB	lab(41.68, 48.93, 32.34)
CIE-LCH	lch(41.68, 58.65, 33.46°)
OKLab	oklab(51.61% 0.1414 0.0734)
OKLCH	oklch(51.61% 0.159 27.4)
XYZ	xyz(20.0334, 12.2958, 4.1142)
Luminance	0.1229 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13730 #30AAB1

analogous

#B1306A #B13730 #B17830

triadic

#B13730 #30B137 #3730B1

tetradic

#B13730 #6AB130 #30AAB1 #7830B1

square

#B13730 #6AB130 #30AAB1 #7830B1

split-complementary

#B13730 #30B178 #306AB1

monochromatic

#511916 #812823 #B13730 #CF564F #DC847F

Accessibility & contrast

On white

6.07

#B13730 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#B13730 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13730

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13730	#FFFFFF	#000000	##FFFFFF
##B13730	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A512E

Deuteranopia (green-blind)

#786C2C

Tritanopia (blue-blind)

#C31136

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b13730;
/* rgb */ color: rgb(177, 55, 48);
/* oklch */ color: oklch(51.6% 0.159 27.4);

Tailwind

colors: {
  custom: {
    50: '#d07569',
    500: '#b13730',
    950: '#000000',
  },
}

SCSS

$custom: #b13730;
$custom-light: #d07569;
$custom-dark: #000000;

JSON

{
  "hex": "#b13730",
  "rgb": {
    "r": 177,
    "g": 55,
    "b": 48
  },
  "hsl": {
    "h": 3.256,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.51605,
    "c": 0.15935,
    "h": 27.4
  },
  "luminance": 0.12293
}

Semantic roles & 50–950 ramp

primary

#B13730

secondary

#78C1C5

accent

#D8E147

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B13730

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

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