#B12737#B12737

#B12737 is a mid, vivid red. Relative luminance 0.111; OKLCH L 50.2% C 0.173 H 20.4°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#B12737
RGB	rgb(177, 39, 55)
HSL	hsl(353, 64%, 42%)
HSV	hsv(353, 78%, 69%)
CMYK	cmyk(0%, 78%, 68.9%, 30.6%)
CIE-LAB	lab(39.71, 55.01, 25.78)
CIE-LCH	lch(39.71, 60.75, 25.11°)
OKLab	oklab(50.17% 0.1623 0.0602)
OKLCH	oklch(50.17% 0.173 20.4)
XYZ	xyz(19.5488, 11.0770, 4.7224)
Luminance	0.1107 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B12737 #27B1A1

analogous

#B1277C #B12737 #B15C27

triadic

#B12737 #37B127 #2737B1

tetradic

#B12737 #7CB127 #27B1A1 #5C27B1

square

#B12737 #7CB127 #27B1A1 #5C27B1

split-complementary

#B12737 #27B15C #277CB1

monochromatic

#4D1118 #7F1C27 #B12737 #D54051 #E0727F

Accessibility & contrast

On white

6.53

#B12737 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#B12737 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B12737

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B12737	#FFFFFF	#000000	##FFFFFF
##B12737	1.00	6.53	3.21	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#504B36

Deuteranopia (green-blind)

#736833

Tritanopia (blue-blind)

#C3002E

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #b12737;
/* rgb */ color: rgb(177, 39, 55);
/* oklch */ color: oklch(50.2% 0.173 20.4);

Tailwind

colors: {
  custom: {
    50: '#d06e6d',
    500: '#b12737',
    950: '#000000',
  },
}

SCSS

$custom: #b12737;
$custom-light: #d06e6d;
$custom-dark: #000000;

JSON

{
  "hex": "#b12737",
  "rgb": {
    "r": 177,
    "g": 39,
    "b": 55
  },
  "hsl": {
    "h": 353.043,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.50168,
    "c": 0.17307,
    "h": 20.4
  },
  "luminance": 0.11074
}

Semantic roles & 50–950 ramp

primary

#B12737

secondary

#6DC7BD

accent

#E7D441

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150807

muted

#837B7A

Preview Lab

Preview with #B12737

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

Preview Lab → · Contrast checker → · Palette generator →