#644666
Closest named color: Brownish Purple (#76424E). oklch(43.9% 0.064 324.5), rgb(100, 70, 102).
Aa
White text reads best on this color (8.04:1).
About this color
#644666 is a dark, muted purple. In OKLCH its lightness is 44%, its chroma 0.064 and its hue 324°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Brownish Purple (#76424E), ΔE 0.049 away. White text reads best on it, at 8.04:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | muted (0.064) |
| Temperature | in between |
| Nearest name | Brownish Purple (#76424E) |
| Black text | 2.60:1 |
| White text | 8.04:1 |
Values
| HEX | #644666 |
| RGB | rgb(100, 70, 102) |
| HSL | hsl(296, 19%, 34%) |
| OKLCH | oklch(43.9% 0.064 324.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #644666 | 8.04:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #644666 | 2.60:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #644666 text on white | 8.04:1 | AAA | Lc 87.8 | Fine for body text |
| #644666 text on black | 2.60:1 | Fails | Lc -14.3 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F7F4F7
oklch(97% 0.005 325.6)
-
Step 100
100
#EEE7EE
oklch(93.5% 0.012 325.7)
-
Step 200
200
#E0D5E1
oklch(88.5% 0.02 323.2)
-
Step 300
300
#CDB9CE
oklch(80.9% 0.036 324.5)
-
Step 400
400
#B494B6
oklch(70.7% 0.061 324.3)
-
Step 500
500
#A17AA3
oklch(63.1% 0.075 324.8)
-
Step 600
600
#8C628E
oklch(55.6% 0.083 325.1)
-
Step 700
700
#775179
oklch(49.1% 0.077 325)
-
Step 800
800 (this color)
#644666
oklch(43.9% 0.064 324.5)
-
Step 900
900
#4F3850
oklch(37.6% 0.05 325.1)
-
Step 950
950
#2E212F
oklch(26.9% 0.031 324)
#644666 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #434E67 | 0.057 |
| Deuteranopia (no green cones) | #4A5165 | 0.052 |
| Tritanopia (no blue cones) | #664951 | 0.039 |
| Achromatopsia (no color) | #505050 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644666
#644666
oklch(43.9% 0.064 324.5)
- #3C5C3C
#3C5C3C
oklch(44% 0.064 144.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #644666, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brownish Purple #76424E ΔE 0.049
- Dusty Grape #545775 ΔE 0.052
- Dusk #4E5481 ΔE 0.060
- Purple Brown #673A3F ΔE 0.063
- Twilight #4E518B ΔE 0.069
- Dark Mauve #874C62 ΔE 0.070
- YInMn Blue #415A77 ΔE 0.074
- Dull Purple #84597E ΔE 0.086
Use #644666 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.