#644C38#644C38
#644C38 is a dark, muted orange. Relative luminance 0.082; OKLCH L 43.6% C 0.045 H 61.0°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).
Color values
| HEX | #644C38 |
|---|---|
| RGB | rgb(100, 76, 56) |
| HSL | hsl(27, 28%, 31%) |
| HSV | hsv(27, 44%, 39%) |
| CMYK | cmyk(0%, 24%, 44%, 60.8%) |
| CIE-LAB | lab(34.32, 7.16, 15.79) |
| CIE-LCH | lch(34.32, 17.34, 65.60°) |
| OKLab | oklab(43.65% 0.0217 0.0393) |
| OKLCH | oklch(43.65% 0.045 61) |
| XYZ | xyz(8.5541, 8.1642, 4.8659) |
| Luminance | 0.0816 (WCAG relative) |
| Temperature | warm |
| Family | orange |
Closest named colors
Walnut
#5C4A3D
ΔE00 3.55
Umber
#635147
ΔE00 4.89
Espresso
#4B382A
ΔE00 7.40
Cocoa
#875F42
ΔE00 9.69
Milk Chocolate
#7F4E1E
ΔE00 10.18
Dark Taupe
#7F684E
ΔE00 10.32
Perceptual scales
Shades
Tints
Tones
OKLCH scale
Color harmonies
complementary
#644C38 #385064
analogous
#64383A #644C38 #646238
triadic
#644C38 #38644C #4C3864
tetradic
#644C38 #3A6438 #385064 #623864
square
#644C38 #3A6438 #385064 #623864
split-complementary
#644C38 #386462 #383A64
monochromatic
#16100C #3D2E22 #644C38 #8B6A4E #AC886B
Accessibility & contrast
On white
7.98
#644C38 on #FFFFFF
AA ✓AA large ✓AAA ✓
On black
2.63
#644C38 on #000000
AA ✗AA large ✗AAA ✗
Best text color
#FFFFFF on #644C38
7.98:1 — WCAG AA (normal text) passes
Contrast matrix
| fg \ bg | ##644C38 | #FFFFFF | #000000 | ##FFFFFF |
|---|---|---|---|---|
| ##644C38 | 1.00 | 7.98 | 2.63 | 7.98 |
| #FFFFFF | 7.98 | 1.00 | 21.00 | 1.00 |
| #000000 | 2.63 | 21.00 | 1.00 | 21.00 |
| ##FFFFFF | 7.98 | 1.00 | 21.00 | 1.00 |
Color blindness preview
Protanopia (red-blind)
#534E37
Deuteranopia (green-blind)
#595338
Tritanopia (blue-blind)
#6B4747
Achromatopsia (no color)
#515151
Design tokens & code
CSS
--color: #644c38; /* rgb */ color: rgb(100, 76, 56); /* oklch */ color: oklch(43.6% 0.045 61.0);
Tailwind
colors: {
custom: {
50: '#917e6e',
500: '#644c38',
950: '#000000',
},
}SCSS
$custom: #644c38; $custom-light: #917e6e; $custom-dark: #000000;
JSON
{
"hex": "#644c38",
"rgb": {
"r": 100,
"g": 76,
"b": 56
},
"hsl": {
"h": 27.273,
"s": 28.205,
"l": 30.588
},
"oklch": {
"l": 0.43649,
"c": 0.04493,
"h": 61
},
"luminance": 0.08164
}Semantic roles & 50–950 ramp
primary
#644C38
secondary
#637E94
accent
#98C563
background
#F9F7F6
surface
#F1EEEC
border
#CBC9C7
text
#0D0907
muted
#7E7B7A