#643F44#643F44
#643F44 is a dark, muted red. Relative luminance 0.067; OKLCH L 41.2% C 0.052 H 10.8°. Best body text is #FFFFFF at 8.99:1 contrast (WCAG AA passes).
Color values
| HEX | #643F44 |
|---|---|
| RGB | rgb(100, 63, 68) |
| HSL | hsl(352, 23%, 32%) |
| HSV | hsv(352, 37%, 39%) |
| CMYK | cmyk(0%, 37%, 32%, 60.8%) |
| CIE-LAB | lab(31.07, 16.92, 3.67) |
| CIE-LCH | lch(31.07, 17.32, 12.24°) |
| OKLab | oklab(41.23% 0.0513 0.0098) |
| OKLCH | oklch(41.23% 0.052 10.8) |
| XYZ | xyz(8.0767, 6.6822, 6.3321) |
| Luminance | 0.0668 (WCAG relative) |
| Temperature | warm |
| Family | red |
Closest named colors
Purplish Brown
#6B4247
ΔE00 1.80
Purple Brown
#673A3F
ΔE00 2.57
Brownish Purple
#76424E
ΔE00 5.15
Wine
#722F37
ΔE00 7.60
Dirty Purple
#734A65
ΔE00 9.61
Dark Mauve
#874C62
ΔE00 10.20
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#643F44 #3F645F
analogous
#643F57 #643F44 #644D3F
triadic
#643F44 #44643F #3F4464
tetradic
#643F44 #57643F #3F645F #4D3F64
square
#643F44 #57643F #3F645F #4D3F64
split-complementary
#643F44 #3F644D #3F5764
monochromatic
#191011 #3E272A #643F44 #8A575E #A8757C
Accessibility & contrast
On white
8.99
#643F44 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.34
#643F44 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #643F44
8.99:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##643F44 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##643F44 | 1.00 | 8.99 | 2.34 | 8.99 |
| #FFFFFF | 8.99 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.34 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 8.99 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#454544
Deuteranopia (green-blind)
#4E4C43
Tritanopia (blue-blind)
#6B3C41
Achromatopsia (no color)
#494949
Design tokens & code
CSS
--color: #643f44; /* rgb */ color: rgb(100, 63, 68); /* oklch */ color: oklch(41.2% 0.052 10.8);
Tailwind
colors: {
custom: {
50: '#917477',
500: '#643f44',
950: '#000000',
},
}SCSS
$custom: #643f44; $custom-light: #917477; $custom-dark: #000000;
JSON
{
"hex": "#643f44",
"rgb": {
"r": 100,
"g": 63,
"b": 68
},
"hsl": {
"h": 351.892,
"s": 22.699,
"l": 31.961
},
"oklch": {
"l": 0.41229,
"c": 0.05224,
"h": 10.8
},
"luminance": 0.06682
}Semantic roles & 50–950 ramp
primary
#643F44
secondary
#6B948E
accent
#BFB369
background
#F9F7F7
surface
#F1EDED
border
#CBC8C8
text
#0D0808
muted
#7E7B7B