#644E84
Closest named color: Twilight (#4E518B). oklch(47% 0.088 301.9), rgb(100, 78, 132).
Aa
White text reads best on this color (7.08:1).
About this color
#644E84 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.088 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.037 away. White text reads best on it, at 7.08:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.088) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.96:1 |
| White text | 7.08:1 |
Values
| HEX | #644E84 |
| RGB | rgb(100, 78, 132) |
| HSL | hsl(264, 26%, 41%) |
| OKLCH | oklch(47% 0.088 301.9) |
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 #644E84 | 7.08:1 | AAA | Lc -89.4 | Fine for body text |
| Black text on #644E84 | 2.96:1 | Fails | Lc 19.6 | Dividers and decoration only |
| #644E84 text on white | 7.08:1 | AAA | Lc 84.5 | Fine for body text |
| #644E84 text on black | 2.96:1 | Fails | Lc -17.5 | 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
#C5BBD8
oklch(80.9% 0.042 301.2)
-
Step 400
400
#A897C5
oklch(70.7% 0.069 301.6)
-
Step 500
500
#937DB6
oklch(63.1% 0.087 301.7)
-
Step 600
600
#7E65A2
oklch(55.6% 0.096 302.2)
-
Step 700
700 (this color)
#644E84
oklch(47% 0.088 301.9)
-
Step 800
800
#564570
oklch(42.7% 0.072 301.6)
-
Step 900
900
#473A5B
oklch(37.7% 0.057 301.8)
-
Step 950
950
#2A2235
oklch(27% 0.036 303.4)
#644E84 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) | #415886 | 0.057 |
| Deuteranopia (no green cones) | #455883 | 0.053 |
| Tritanopia (no blue cones) | #5E5762 | 0.069 |
| Achromatopsia (no color) | #585858 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644E84
#644E84
oklch(47% 0.088 301.9)
- #536225
#536225
oklch(46.9% 0.087 121.5)
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 #644E84, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.037
- Dusk #4E5481 ΔE 0.039
- Dusty Grape #545775 ΔE 0.047
- Dusky Blue #475F94 ΔE 0.061
- Muted Purple #805B87 ΔE 0.063
- Denim Blue #3B5B92 ΔE 0.066
- YInMn Blue #415A77 ΔE 0.068
- Light Eggplant #894585 ΔE 0.069
Use #644E84 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.