#B33F3F#B33F3F
#B33F3F is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.1% C 0.151 H 23.8°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).
Color values
| HEX | #B33F3F |
|---|---|
| RGB | rgb(179, 63, 63) |
| HSL | hsl(0, 48%, 47%) |
| HSV | hsv(0, 65%, 70%) |
| CMYK | cmyk(0%, 64.8%, 64.8%, 29.8%) |
| CIE-LAB | lab(43.51, 47.05, 25.71) |
| CIE-LCH | lch(43.51, 53.61, 28.65°) |
| OKLab | oklab(53.11% 0.1383 0.061) |
| OKLCH | oklch(53.11% 0.151 23.8) |
| XYZ | xyz(21.2672, 13.5005, 6.1876) |
| Luminance | 0.1350 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Dull Red
#BB3F3F
ΔE00 1.66
Dusty Red
#B9484E
ΔE00 3.81
Reddish
#C44240
ΔE00 3.84
Cardinal
#C41E3A
ΔE00 4.88
Brown
#A52A2A
ΔE00 5.73
Lipstick Red
#C0022F
ΔE00 5.96
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#B33F3F #3FB3B3
analogous
#B33F79 #B33F3F #B3793F
triadic
#B33F3F #3FB33F #3F3FB3
tetradic
#B33F3F #79B33F #3FB3B3 #793FB3
square
#B33F3F #79B33F #3FB3B3 #793FB3
split-complementary
#B33F3F #3FB379 #3F79B3
monochromatic
#581F1F #862F2F #B33F3F #C96666 #D99393
Accessibility & contrast
On white
5.68
#B33F3F on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.70
#B33F3F on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #B33F3F
5.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##B33F3F | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##B33F3F | 1.00 | 5.68 | 3.70 | 5.68 |
| #FFFFFF | 5.68 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.70 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.68 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#5E573E
Deuteranopia (green-blind)
#7B703C
Tritanopia (blue-blind)
#C42540
Achromatopsia (no color)
#676767
Design tokens & code
CSS
--color: #b33f3f; /* rgb */ color: rgb(179, 63, 63); /* oklch */ color: oklch(53.1% 0.151 23.8);
Tailwind
colors: {
custom: {
50: '#d07a74',
500: '#b33f3f',
950: '#000000',
},
}SCSS
$custom: #b33f3f; $custom-light: #d07a74; $custom-dark: #000000;
JSON
{
"hex": "#b33f3f",
"rgb": {
"r": 179,
"g": 63,
"b": 63
},
"hsl": {
"h": 0,
"s": 47.934,
"l": 47.451
},
"oklch": {
"l": 0.53111,
"c": 0.15121,
"h": 23.8
},
"luminance": 0.13498
}Semantic roles & 50–950 ramp
primary
#B33F3F
secondary
#89C4C4
accent
#D8D850
background
#FDF7F7
surface
#FBEEED
border
#D4C9C8
text
#150A08
muted
#837C7B