#644576
Closest named color: Dusk (#4E5481). oklch(44.5% 0.086 312.3), rgb(100, 69, 118).
Aa
White text reads best on this color (7.91:1).
About this color
#644576 is a dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.086 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.052 away. White text reads best on it, at 7.91:1.
| Hue family | Purples |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.086) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.65:1 |
| White text | 7.91:1 |
Values
| HEX | #644576 |
| RGB | rgb(100, 69, 118) |
| HSL | hsl(278, 26%, 37%) |
| OKLCH | oklch(44.5% 0.086 312.3) |
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 #644576 | 7.91:1 | AAA | Lc -92.0 | Preferred for body text |
| Black text on #644576 | 2.65:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #644576 text on white | 7.91:1 | AAA | Lc 87.3 | Fine for body text |
| #644576 text on black | 2.65:1 | Fails | Lc -14.8 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F1
oklch(93.6% 0.015 312.2)
-
Step 200
200
#DFD4E7
oklch(88.4% 0.028 311.3)
-
Step 300
300
#CCB8D8
oklch(80.9% 0.049 312.9)
-
Step 400
400
#B292C5
oklch(70.7% 0.081 312.7)
-
Step 500
500
#9F77B6
oklch(63.2% 0.102 312.7)
-
Step 600
600
#895FA2
oklch(55.6% 0.111 312)
-
Step 700
700
#754E8B
oklch(49.2% 0.104 312.5)
-
Step 800
800 (this color)
#644576
oklch(44.5% 0.086 312.3)
-
Step 900
900
#4E375B
oklch(37.8% 0.066 312.7)
-
Step 950
950
#2D2035
oklch(26.9% 0.042 312)
#644576 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) | #3C5078 | 0.067 |
| Deuteranopia (no green cones) | #435275 | 0.062 |
| Tritanopia (no blue cones) | #624C58 | 0.059 |
| Achromatopsia (no color) | #515151 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644576
#644576
oklch(44.5% 0.086 312.3)
- #415E29
#415E29
oklch(44.6% 0.086 132.7)
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 #644576, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.052
- Twilight #4E518B ΔE 0.053
- Dusty Grape #545775 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.068
- Brownish Purple #76424E ΔE 0.072
- Light Eggplant #894585 ΔE 0.074
- YInMn Blue #415A77 ΔE 0.077
- Rebecca Purple #663399 ΔE 0.077
Use #644576 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.