#B1372B#B1372B
#B1372B is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.5% C 0.160 H 29.3°. Best body text is #FFFFFF at 6.09:1 contrast (WCAG AA passes).
Color values
| HEX | #B1372B |
|---|---|
| RGB | rgb(177, 55, 43) |
| HSL | hsl(5, 61%, 43%) |
| HSV | hsv(5, 76%, 69%) |
| CMYK | cmyk(0%, 68.9%, 75.7%, 30.6%) |
| CIE-LAB | lab(41.62, 48.71, 35.15) |
| CIE-LCH | lch(41.62, 60.07, 35.82°) |
| OKLab | oklab(51.54% 0.1397 0.0784) |
| OKLCH | oklch(51.54% 0.16 29.3) |
| XYZ | xyz(19.9359, 12.2569, 3.6011) |
| Luminance | 0.1225 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Firebrick
#B22222
ΔE00 3.15
Brick
#A03623
ΔE00 3.88
Brownish Red
#9E3623
ΔE00 4.22
Brown
#A52A2A
ΔE00 4.45
Scarlet
#BE0119
ΔE00 4.81
Dull Red
#BB3F3F
ΔE00 5.12
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#B1372B #2BA5B1
analogous
#B12B62 #B1372B #B17A2B
triadic
#B1372B #2BB137 #372BB1
tetradic
#B1372B #62B12B #2BA5B1 #7A2BB1
square
#B1372B #62B12B #2BA5B1 #7A2BB1
split-complementary
#B1372B #2BB17A #2B62B1
monochromatic
#4F1813 #80281F #B1372B #D25347 #DE8178
Accessibility & contrast
On white
6.09
#B1372B on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.45
#B1372B on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #B1372B
6.09:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##B1372B | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##B1372B | 1.00 | 6.09 | 3.45 | 6.09 |
| #FFFFFF | 6.09 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.45 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 6.09 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5A5129
Deuteranopia (green-blind)
#786C27
Tritanopia (blue-blind)
#C30F35
Achromatopsia (no color)
#626262
Design tokens & code
CSS
--color: #b1372b; /* rgb */ color: rgb(177, 55, 43); /* oklch */ color: oklch(51.5% 0.160 29.3);
Tailwind
colors: {
custom: {
50: '#d07565',
500: '#b1372b',
950: '#000000',
},
}SCSS
$custom: #b1372b; $custom-light: #d07565; $custom-dark: #000000;
JSON
{
"hex": "#b1372b",
"rgb": {
"r": 177,
"g": 55,
"b": 43
},
"hsl": {
"h": 5.373,
"s": 60.909,
"l": 43.137
},
"oklch": {
"l": 0.5154,
"c": 0.16019,
"h": 29.3
},
"luminance": 0.12254
}Semantic roles & 50–950 ramp
primary
#B1372B
secondary
#72BFC6
accent
#D6E444
background
#FDF7F6
surface
#FBEDEB
border
#D4C8C6
text
#150905
muted
#837B7A