#B4431E#B4431E
#B4431E is a mid, vivid red. Relative luminance 0.138; OKLCH L 53.4% C 0.155 H 37.6°. Best body text is #FFFFFF at 5.58:1 contrast (WCAG AA passes).
Color values
| HEX | #B4431E |
|---|---|
| RGB | rgb(180, 67, 30) |
| HSL | hsl(15, 71%, 41%) |
| HSV | hsv(15, 83%, 71%) |
| CMYK | cmyk(0%, 62.8%, 83.3%, 29.4%) |
| CIE-LAB | lab(43.97, 44.12, 44.46) |
| CIE-LCH | lch(43.97, 62.63, 45.22°) |
| OKLab | oklab(53.36% 0.1227 0.0945) |
| OKLCH | oklch(53.36% 0.155 37.6) |
| XYZ | xyz(21.0662, 13.8144, 2.7852) |
| Luminance | 0.1381 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Rust
#B7410E
ΔE00 2.53
Rust (survey)
#A83C09
ΔE00 4.10
Rusty Red
#AF2F0D
ΔE00 4.23
Brick Orange
#C14A09
ΔE00 5.51
Russet
#A13905
ΔE00 5.56
Sienna
#A0522D
ΔE00 5.78
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#B4431E #1E8FB4
analogous
#B41E44 #B4431E #B48E1E
triadic
#B4431E #1EB443 #431EB4
tetradic
#B4431E #44B41E #1E8FB4 #8E1EB4
square
#B4431E #44B41E #1E8FB4 #8E1EB4
split-complementary
#B4431E #1EB48E #1E44B4
monochromatic
#4B1C0D #802F15 #B4431E #DD5C32 #E68667
Accessibility & contrast
On white
5.58
#B4431E on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.76
#B4431E on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #B4431E
5.58:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##B4431E | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##B4431E | 1.00 | 5.58 | 3.76 | 5.58 |
| #FFFFFF | 5.58 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.76 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.58 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#635818
Deuteranopia (green-blind)
#7F7119
Tritanopia (blue-blind)
#C6253C
Achromatopsia (no color)
#686868
Design tokens & code
CSS
--color: #b4431e; /* rgb */ color: rgb(180, 67, 30); /* oklch */ color: oklch(53.4% 0.155 37.6);
Tailwind
colors: {
custom: {
50: '#d37c5d',
500: '#b4431e',
950: '#000000',
},
}SCSS
$custom: #b4431e; $custom-light: #d37c5d; $custom-dark: #000000;
JSON
{
"hex": "#b4431e",
"rgb": {
"r": 180,
"g": 67,
"b": 30
},
"hsl": {
"h": 14.8,
"s": 71.429,
"l": 41.176
},
"oklch": {
"l": 0.53365,
"c": 0.1549,
"h": 37.6
},
"luminance": 0.13811
}Semantic roles & 50–950 ramp
primary
#B4431E
secondary
#63B1CB
accent
#C2EE3A
background
#FEF7F5
surface
#FCEEE9
border
#D5C9C5
text
#160A04
muted
#847C79