#B33639#B33639
#B33639 is a mid, vivid red. Relative luminance 0.125; OKLCH L 52.0% C 0.161 H 23.5°. Best body text is #FFFFFF at 5.99:1 contrast (WCAG AA passes).
Color values
| HEX | #B33639 |
|---|---|
| RGB | rgb(179, 54, 57) |
| HSL | hsl(359, 54%, 46%) |
| HSV | hsv(359, 70%, 70%) |
| CMYK | cmyk(0%, 69.8%, 68.2%, 29.8%) |
| CIE-LAB | lab(42.03, 50.45, 27.50) |
| CIE-LCH | lch(42.03, 57.45, 28.59°) |
| OKLab | oklab(51.98% 0.1479 0.0643) |
| OKLCH | oklch(51.98% 0.161 23.5) |
| XYZ | xyz(20.6503, 12.5205, 5.1994) |
| Luminance | 0.1252 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Dull Red
#BB3F3F
ΔE00 2.69
Cardinal
#C41E3A
ΔE00 4.01
Brown
#A52A2A
ΔE00 4.34
Lipstick Red
#C0022F
ΔE00 4.46
Reddish
#C44240
ΔE00 4.80
Firebrick
#B22222
ΔE00 4.97
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#B33639 #36B3B0
analogous
#B33677 #B33639 #B37136
triadic
#B33639 #39B336 #3639B3
tetradic
#B33639 #77B336 #36B3B0 #7136B3
square
#B33639 #77B336 #36B3B0 #7136B3
split-complementary
#B33639 #36B371 #3677B3
monochromatic
#551A1B #84282A #B33639 #CD595C #DB888A
Accessibility & contrast
On white
5.99
#B33639 on #FFFFFF
AA ✓AA large ✓AAA ✗
On black
3.50
#B33639 on #000000
AA ✗AA large ✓AAA ✗
Best text color
#FFFFFF on #B33639
5.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##B33639 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##B33639 | 1.00 | 5.99 | 3.50 | 5.99 |
| #FFFFFF | 5.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 3.50 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 5.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#595238
Deuteranopia (green-blind)
#786D35
Tritanopia (blue-blind)
#C51038
Achromatopsia (no color)
#636363
Design tokens & code
CSS
--color: #b33639; /* rgb */ color: rgb(179, 54, 57); /* oklch */ color: oklch(52.0% 0.161 23.5);
Tailwind
colors: {
custom: {
50: '#d1756f',
500: '#b33639',
950: '#000000',
},
}SCSS
$custom: #b33639; $custom-light: #d1756f; $custom-dark: #000000;
JSON
{
"hex": "#b33639",
"rgb": {
"r": 179,
"g": 54,
"b": 57
},
"hsl": {
"h": 358.56,
"s": 53.648,
"l": 45.686
},
"oklch": {
"l": 0.51975,
"c": 0.16123,
"h": 23.5
},
"luminance": 0.12517
}Semantic roles & 50–950 ramp
primary
#B33639
secondary
#80C5C4
accent
#DDDA4B
background
#FDF7F6
surface
#FBEDEC
border
#D4C8C7
text
#150907
muted
#837B7A