#B43537#B43537
#B43537 is a mid, vivid red. Relative luminance 0.125; OKLCH L 52.0% C 0.163 H 24.1°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).
Color values
| HEX | #B43537 |
|---|---|
| RGB | rgb(180, 53, 55) |
| HSL | hsl(359, 55%, 46%) |
| HSV | hsv(359, 71%, 71%) |
| CMYK | cmyk(0%, 70.6%, 69.4%, 29.4%) |
| CIE-LAB | lab(42.04, 51.06, 28.76) |
| CIE-LCH | lch(42.04, 58.60, 29.39°) |
| OKLab | oklab(52.01% 0.1493 0.0667) |
| OKLCH | oklch(52.01% 0.163 24.1) |
| XYZ | xyz(20.7873, 12.5284, 4.9373) |
| Luminance | 0.1253 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Dull Red
#BB3F3F
ΔE00 2.70
Cardinal
#C41E3A
ΔE00 4.14
Brown
#A52A2A
ΔE00 4.17
Lipstick Red
#C0022F
ΔE00 4.40
Firebrick
#B22222
ΔE00 4.50
Reddish
#C44240
ΔE00 4.68
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#B43537 #35B4B2
analogous
#B43576 #B43537 #B47235
triadic
#B43537 #37B435 #3537B4
tetradic
#B43537 #76B435 #35B4B2 #7235B4
square
#B43537 #76B435 #35B4B2 #7235B4
split-complementary
#B43537 #35B472 #3576B4
monochromatic
#55191A #852729 #B43537 #CE585A #DC8889
Accessibility & contrast
On white
5.99
#B43537 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.51
#B43537 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #B43537
5.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##B43537 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##B43537 | 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)
#595236
Deuteranopia (green-blind)
#796D33
Tritanopia (blue-blind)
#C60A37
Achromatopsia (no color)
#636363
Design tokens & code
CSS
--color: #b43537; /* rgb */ color: rgb(180, 53, 55); /* oklch */ color: oklch(52.0% 0.163 24.1);
Tailwind
colors: {
custom: {
50: '#d2756e',
500: '#b43537',
950: '#000000',
},
}SCSS
$custom: #b43537; $custom-light: #d2756e; $custom-dark: #000000;
JSON
{
"hex": "#b43537",
"rgb": {
"r": 180,
"g": 53,
"b": 55
},
"hsl": {
"h": 359.055,
"s": 54.506,
"l": 45.686
},
"oklch": {
"l": 0.52008,
"c": 0.16349,
"h": 24.1
},
"luminance": 0.12525
}Semantic roles & 50–950 ramp
primary
#B43537
secondary
#7FC6C5
accent
#DEDC4A
background
#FDF7F6
surface
#FBEDEB
border
#D4C8C6
text
#150907
muted
#837B7A