#B7372A#B7372A
#B7372A is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.6% C 0.167 H 29.6°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).
Color values
| HEX | #B7372A |
|---|---|
| RGB | rgb(183, 55, 42) |
| HSL | hsl(6, 63%, 44%) |
| HSV | hsv(6, 77%, 72%) |
| CMYK | cmyk(0%, 69.9%, 77%, 28.2%) |
| CIE-LAB | lab(42.72, 50.68, 37.22) |
| CIE-LCH | lch(42.72, 62.88, 36.29°) |
| OKLab | oklab(52.56% 0.145 0.0822) |
| OKLCH | oklch(52.56% 0.167 29.6) |
| XYZ | xyz(21.3150, 12.9700, 3.5712) |
| Luminance | 0.1297 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Firebrick
#B22222
ΔE00 3.74
Scarlet
#BE0119
ΔE00 4.74
Brick
#A03623
ΔE00 4.83
Dull Red
#BB3F3F
ΔE00 5.10
Brownish Red
#9E3623
ΔE00 5.20
Brown
#A52A2A
ΔE00 5.57
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#B7372A #2AAAB7
analogous
#B72A64 #B7372A #B77E2A
triadic
#B7372A #2AB737 #372AB7
tetradic
#B7372A #64B72A #2AAAB7 #7E2AB7
square
#B7372A #64B72A #2AAAB7 #7E2AB7
split-complementary
#B7372A #2AB77E #2A64B7
monochromatic
#531913 #85281F #B7372A #D55649 #E1847B
Accessibility & contrast
On white
5.84
#B7372A on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.59
#B7372A on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #B7372A
5.84:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##B7372A | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##B7372A | 1.00 | 5.84 | 3.59 | 5.84 |
| #FFFFFF | 5.84 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.59 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.84 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5C5327
Deuteranopia (green-blind)
#7C6F25
Tritanopia (blue-blind)
#CA0635
Achromatopsia (no color)
#656565
Design tokens & code
CSS
--color: #b7372a; /* rgb */ color: rgb(183, 55, 42); /* oklch */ color: oklch(52.6% 0.167 29.6);
Tailwind
colors: {
custom: {
50: '#d57664',
500: '#b7372a',
950: '#000000',
},
}SCSS
$custom: #b7372a; $custom-light: #d57664; $custom-dark: #000000;
JSON
{
"hex": "#b7372a",
"rgb": {
"r": 183,
"g": 55,
"b": 42
},
"hsl": {
"h": 5.532,
"s": 62.667,
"l": 44.118
},
"oklch": {
"l": 0.52562,
"c": 0.16666,
"h": 29.6
},
"luminance": 0.12967
}Semantic roles & 50–950 ramp
primary
#B7372A
secondary
#74C1C9
accent
#D7E642
background
#FEF7F6
surface
#FCEDEB
border
#D5C8C6
text
#160905
muted
#847B7A