#B3231C#B3231C
#B3231C is a mid, vivid red. Relative luminance 0.109; OKLCH L 49.9% C 0.181 H 28.6°. Best body text is #FFFFFF at 6.62:1 contrast (WCAG AA passes).
Color values
| HEX | #B3231C |
|---|---|
| RGB | rgb(179, 35, 28) |
| HSL | hsl(3, 73%, 41%) |
| HSV | hsv(3, 84%, 70%) |
| CMYK | cmyk(0%, 80.4%, 84.4%, 29.8%) |
| CIE-LAB | lab(39.37, 55.76, 41.19) |
| CIE-LCH | lch(39.37, 69.33, 36.45°) |
| OKLab | oklab(49.88% 0.1586 0.0865) |
| OKLCH | oklch(49.88% 0.181 28.6) |
| XYZ | xyz(19.4035, 10.8728, 2.1754) |
| Luminance | 0.1087 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Firebrick
#B22222
ΔE00 1.76
Scarlet
#BE0119
ΔE00 2.53
Darkish Red
#A90308
ΔE00 4.03
Brick
#A03623
ΔE00 4.20
Brown
#A52A2A
ΔE00 4.51
Brownish Red
#9E3623
ΔE00 4.51
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#B3231C #1CACB3
analogous
#B31C61 #B3231C #B36E1C
triadic
#B3231C #1CB323 #231CB3
tetradic
#B3231C #61B31C #1CACB3 #6E1CB3
square
#B3231C #61B31C #1CACB3 #6E1CB3
split-complementary
#B3231C #1CB36E #1C61B3
monochromatic
#490E0B #7E1914 #B3231C #DE362E #E76963
Accessibility & contrast
On white
6.62
#B3231C on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.17
#B3231C on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #B3231C
6.62:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##B3231C | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##B3231C | 1.00 | 6.62 | 3.17 | 6.62 |
| #FFFFFF | 6.62 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.17 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 6.62 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#524919
Deuteranopia (green-blind)
#756813
Tritanopia (blue-blind)
#C60024
Achromatopsia (no color)
#5D5D5D
Design tokens & code
CSS
--color: #b3231c; /* rgb */ color: rgb(179, 35, 28); /* oklch */ color: oklch(49.9% 0.181 28.6);
Tailwind
colors: {
custom: {
50: '#d46c5a',
500: '#b3231c',
950: '#000000',
},
}SCSS
$custom: #b3231c; $custom-light: #d46c5a; $custom-dark: #000000;
JSON
{
"hex": "#b3231c",
"rgb": {
"r": 179,
"g": 35,
"b": 28
},
"hsl": {
"h": 2.781,
"s": 72.947,
"l": 40.588
},
"oklch": {
"l": 0.4988,
"c": 0.18065,
"h": 28.6
},
"luminance": 0.1087
}Semantic roles & 50–950 ramp
primary
#B3231C
secondary
#5FC6CB
accent
#E7F038
background
#FEF6F5
surface
#FDECE9
border
#D5C7C5
text
#160804
muted
#847A79