#B33F3D#B33F3D
#B33F3D is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.1% C 0.151 H 24.7°. Best body text is #FFFFFF at 5.68:1 contrast (WCAG AA passes).
Color values
| HEX | #B33F3D |
|---|---|
| RGB | rgb(179, 63, 61) |
| HSL | hsl(1, 49%, 47%) |
| HSV | hsv(1, 66%, 70%) |
| CMYK | cmyk(0%, 64.8%, 65.9%, 29.8%) |
| CIE-LAB | lab(43.48, 46.93, 26.87) |
| CIE-LCH | lch(43.48, 54.07, 29.79°) |
| OKLab | oklab(53.08% 0.1376 0.0634) |
| OKLCH | oklch(53.08% 0.151 24.7) |
| XYZ | xyz(21.2123, 13.4786, 5.8986) |
| Luminance | 0.1348 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Dull Red
#BB3F3F
ΔE00 1.63
Reddish
#C44240
ΔE00 3.70
Dusty Red
#B9484E
ΔE00 4.31
Cardinal
#C41E3A
ΔE00 5.18
Brown
#A52A2A
ΔE00 5.51
Firebrick
#B22222
ΔE00 5.88
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#B33F3D #3DB1B3
analogous
#B33D76 #B33F3D #B37A3D
triadic
#B33F3D #3DB33F #3F3DB3
tetradic
#B33F3D #76B33D #3DB1B3 #7A3DB3
square
#B33F3D #76B33D #3DB1B3 #7A3DB3
split-complementary
#B33F3D #3DB37A #3D76B3
monochromatic
#581F1E #852F2D #B33F3D #CA6563 #D99291
Accessibility & contrast
On white
5.68
#B33F3D on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.70
#B33F3D on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #B33F3D
5.68:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##B33F3D | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##B33F3D | 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)
#5E573C
Deuteranopia (green-blind)
#7B703A
Tritanopia (blue-blind)
#C42440
Achromatopsia (no color)
#676767
Design tokens & code
CSS
--color: #b33f3d; /* rgb */ color: rgb(179, 63, 61); /* oklch */ color: oklch(53.1% 0.151 24.7);
Tailwind
colors: {
custom: {
50: '#d17a72',
500: '#b33f3d',
950: '#000000',
},
}SCSS
$custom: #b33f3d; $custom-light: #d17a72; $custom-dark: #000000;
JSON
{
"hex": "#b33f3d",
"rgb": {
"r": 179,
"g": 63,
"b": 61
},
"hsl": {
"h": 1.017,
"s": 49.167,
"l": 47.059
},
"oklch": {
"l": 0.53076,
"c": 0.15147,
"h": 24.7
},
"luminance": 0.13476
}Semantic roles & 50–950 ramp
primary
#B33F3D
secondary
#87C4C5
accent
#D6D94F
background
#FDF7F6
surface
#FBEEEC
border
#D4C9C7
text
#150A08
muted
#837C7B