#644E85
Closest named color: Twilight (#4E518B). oklch(47% 0.09 301.5), rgb(100, 78, 133).
Aa
White text reads best on this color (7.06:1).
About this color
#644E85 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.090 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.036 away. White text reads best on it, at 7.06:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.090) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #644E85 |
| RGB | rgb(100, 78, 133) |
| HSL | hsl(264, 26%, 41%) |
| OKLCH | oklch(47% 0.09 301.5) |
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 #644E85 | 7.06:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #644E85 | 2.97:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #644E85 text on white | 7.06:1 | AAA | Lc 84.4 | Fine for body text |
| #644E85 text on black | 2.97:1 | Fails | Lc -17.6 | Dividers and decoration only |
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 700.
-
Step 50
50
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EBE8F1
oklch(93.6% 0.012 301.3)
-
Step 200
200
#DCD6E7
oklch(88.6% 0.024 301.9)
-
Step 300
300
#C5BBD9
oklch(81% 0.043 300.6)
-
Step 400
400
#A897C5
oklch(70.7% 0.069 301.6)
-
Step 500
500
#937DB7
oklch(63.2% 0.089 301.3)
-
Step 600
600
#7D65A3
oklch(55.5% 0.097 301.1)
-
Step 700
700 (this color)
#644E85
oklch(47% 0.09 301.5)
-
Step 800
800
#564571
oklch(42.7% 0.074 301.1)
-
Step 900
900
#473A5B
oklch(37.7% 0.057 301.8)
-
Step 950
950
#2A2236
oklch(27% 0.038 302.3)
#644E85 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) | #405887 | 0.058 |
| Deuteranopia (no green cones) | #455884 | 0.053 |
| Tritanopia (no blue cones) | #5E5763 | 0.069 |
| Achromatopsia (no color) | #585858 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644E85
#644E85
oklch(47% 0.09 301.5)
- #536223
#536223
oklch(46.9% 0.089 121.2)
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 #644E85, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.036
- Dusk #4E5481 ΔE 0.039
- Dusty Grape #545775 ΔE 0.048
- Dusky Blue #475F94 ΔE 0.060
- Muted Purple #805B87 ΔE 0.064
- Denim Blue #3B5B92 ΔE 0.066
- YInMn Blue #415A77 ΔE 0.068
- Light Eggplant #894585 ΔE 0.069
Use #644E85 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.