#B33F22#B33F22
#B33F22 is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.7% C 0.157 H 35.0°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).
Color values
| HEX | #B33F22 |
|---|---|
| RGB | rgb(179, 63, 34) |
| HSL | hsl(12, 68%, 42%) |
| HSV | hsv(12, 81%, 70%) |
| CMYK | cmyk(0%, 64.8%, 81%, 29.8%) |
| CIE-LAB | lab(43.15, 45.68, 41.68) |
| CIE-LCH | lch(43.15, 61.84, 42.38°) |
| OKLab | oklab(52.73% 0.1283 0.0898) |
| OKLCH | oklch(52.73% 0.157 35) |
| XYZ | xyz(20.6590, 13.2572, 2.9841) |
| Luminance | 0.1325 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Rusty Red
#AF2F0D
ΔE00 3.61
Rust
#B7410E
ΔE00 4.40
Brick
#A03623
ΔE00 5.07
Rust (survey)
#A83C09
ΔE00 5.14
Rust Red
#AA2704
ΔE00 5.32
Brownish Red
#9E3623
ΔE00 5.41
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#B33F22 #2296B3
analogous
#B3224E #B33F22 #B38822
triadic
#B33F22 #22B33F #3F22B3
tetradic
#B33F22 #4EB322 #2296B3 #8822B3
square
#B33F22 #4EB322 #2296B3 #8822B3
split-complementary
#B33F22 #22B388 #224EB3
monochromatic
#4C1B0E #802D18 #B33F22 #D95939 #E3846C
Accessibility & contrast
On white
5.75
#B33F22 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.65
#B33F22 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #B33F22
5.75:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##B33F22 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##B33F22 | 1.00 | 5.75 | 3.65 | 5.75 |
| #FFFFFF | 5.75 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.65 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.75 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#60561E
Deuteranopia (green-blind)
#7D6F1D
Tritanopia (blue-blind)
#C51E39
Achromatopsia (no color)
#666666
Design tokens & code
CSS
--color: #b33f22; /* rgb */ color: rgb(179, 63, 34); /* oklch */ color: oklch(52.7% 0.157 35.0);
Tailwind
colors: {
custom: {
50: '#d2795f',
500: '#b33f22',
950: '#000000',
},
}SCSS
$custom: #b33f22; $custom-light: #d2795f; $custom-dark: #000000;
JSON
{
"hex": "#b33f22",
"rgb": {
"r": 179,
"g": 63,
"b": 34
},
"hsl": {
"h": 12,
"s": 68.075,
"l": 41.765
},
"oklch": {
"l": 0.52725,
"c": 0.15663,
"h": 35
},
"luminance": 0.13254
}Semantic roles & 50–950 ramp
primary
#B33F22
secondary
#68B6C9
accent
#C8EB3D
background
#FEF7F5
surface
#FCEEE9
border
#D5C9C5
text
#160905
muted
#847B79