#B73137#B73137
#B73137 is a mid, vivid red. Relative luminance 0.125; OKLCH L 52.1% C 0.170 H 23.1°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).
Color values
| HEX | #B73137 |
|---|---|
| RGB | rgb(183, 49, 55) |
| HSL | hsl(357, 58%, 45%) |
| HSV | hsv(357, 73%, 72%) |
| CMYK | cmyk(0%, 73.2%, 69.9%, 28.2%) |
| CIE-LAB | lab(42.07, 53.51, 28.92) |
| CIE-LCH | lch(42.07, 60.82, 28.39°) |
| OKLab | oklab(52.13% 0.1567 0.0669) |
| OKLCH | oklch(52.13% 0.17 23.1) |
| XYZ | xyz(21.3187, 12.5430, 4.9122) |
| Luminance | 0.1254 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Dull Red
#BB3F3F
ΔE00 2.87
Cardinal
#C41E3A
ΔE00 3.30
Lipstick Red
#C0022F
ΔE00 3.66
Cherry (survey)
#CF0234
ΔE00 4.47
Brown
#A52A2A
ΔE00 4.47
Firebrick
#B22222
ΔE00 4.71
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#B73137 #31B7B1
analogous
#B7317A #B73137 #B76E31
triadic
#B73137 #37B731 #3137B7
tetradic
#B73137 #7AB731 #31B7B1 #6E31B7
square
#B73137 #7AB731 #31B7B1 #6E31B7
split-complementary
#B73137 #31B76E #317AB7
monochromatic
#56171A #872428 #B73137 #D1545A #DE8488
Accessibility & contrast
On white
5.99
#B73137 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.51
#B73137 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #B73137
5.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##B73137 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##B73137 | 1.00 | 5.99 | 3.51 | 5.99 |
| #FFFFFF | 5.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.51 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#585136
Deuteranopia (green-blind)
#796E33
Tritanopia (blue-blind)
#C90035
Achromatopsia (no color)
#636363
Design tokens & code
CSS
--color: #b73137; /* rgb */ color: rgb(183, 49, 55); /* oklch */ color: oklch(52.1% 0.170 23.1);
Tailwind
colors: {
custom: {
50: '#d5736e',
500: '#b73137',
950: '#000000',
},
}SCSS
$custom: #b73137; $custom-light: #d5736e; $custom-dark: #000000;
JSON
{
"hex": "#b73137",
"rgb": {
"r": 183,
"g": 49,
"b": 55
},
"hsl": {
"h": 357.313,
"s": 57.759,
"l": 45.49
},
"oklch": {
"l": 0.52128,
"c": 0.17034,
"h": 23.1
},
"luminance": 0.1254
}Semantic roles & 50–950 ramp
primary
#B73137
secondary
#7CC8C4
accent
#E1DA47
background
#FEF7F6
surface
#FCEDEB
border
#D5C8C6
text
#160907
muted
#847B7A