#B12537#B12537

#B12537 is a mid, vivid red. Relative luminance 0.109; OKLCH L 50.0% C 0.175 H 20.0°. Best body text is #FFFFFF at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#B12537
RGB	rgb(177, 37, 55)
HSL	hsl(352, 65%, 42%)
HSV	hsv(352, 79%, 69%)
CMYK	cmyk(0%, 79.1%, 68.9%, 30.6%)
CIE-LAB	lab(39.49, 55.62, 25.52)
CIE-LCH	lch(39.49, 61.19, 24.65°)
OKLab	oklab(50.01% 0.1642 0.0596)
OKLCH	oklch(50.01% 0.175 20)
XYZ	xyz(19.4848, 10.9491, 4.7011)
Luminance	0.1095 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B12537 #25B19F

analogous

#B1257D #B12537 #B15925

triadic

#B12537 #37B125 #2537B1

tetradic

#B12537 #7DB125 #25B19F #5925B1

square

#B12537 #7DB125 #25B19F #5925B1

split-complementary

#B12537 #25B159 #257DB1

monochromatic

#4C1018 #7E1A27 #B12537 #D63D51 #E16F7E

Accessibility & contrast

On white

6.58

#B12537 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.19

#B12537 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B12537

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B12537	#FFFFFF	#000000	##FFFFFF
##B12537	1.00	6.58	3.19	6.58
#FFFFFF	6.58	1.00	21.00	1.00
#000000	3.19	21.00	1.00	21.00
##FFFFFF	6.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F4A37

Deuteranopia (green-blind)

#726833

Tritanopia (blue-blind)

#C3002D

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b12537;
/* rgb */ color: rgb(177, 37, 55);
/* oklch */ color: oklch(50.0% 0.175 20.0);

Tailwind

colors: {
  custom: {
    50: '#d06d6d',
    500: '#b12537',
    950: '#000000',
  },
}

SCSS

$custom: #b12537;
$custom-light: #d06d6d;
$custom-dark: #000000;

JSON

{
  "hex": "#b12537",
  "rgb": {
    "r": 177,
    "g": 37,
    "b": 55
  },
  "hsl": {
    "h": 352.286,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.50008,
    "c": 0.17468,
    "h": 20
  },
  "luminance": 0.10946
}

Semantic roles & 50–950 ramp

primary

#B12537

secondary

#6AC8BC

accent

#E8D33F

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150807

muted

#837B7A

Preview Lab

Preview with #B12537

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

Preview Lab → · Contrast checker → · Palette generator →