#644F84
Closest named color: Twilight (#4E518B). oklch(47.2% 0.087 301.4), rgb(100, 79, 132).
Aa
White text reads best on this color (7.01:1).
About this color
#644F84 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.087 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.037 away. White text reads best on it, at 7.01:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.087) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.99:1 |
| White text | 7.01:1 |
Values
| HEX | #644F84 |
| RGB | rgb(100, 79, 132) |
| HSL | hsl(264, 25%, 41%) |
| OKLCH | oklch(47.2% 0.087 301.4) |
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 #644F84 | 7.01:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #644F84 | 2.99:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #644F84 text on white | 7.01:1 | AAA | Lc 84.2 | Fine for body text |
| #644F84 text on black | 2.99:1 | Fails | Lc -17.8 | 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
#DBD6E6
oklch(88.5% 0.022 300.2)
-
Step 300
300
#C5BBD8
oklch(80.9% 0.042 301.2)
-
Step 400
400
#A897C4
oklch(70.7% 0.067 302)
-
Step 500
500
#927DB5
oklch(63% 0.086 301.2)
-
Step 600
600
#7D66A1
oklch(55.6% 0.093 301.4)
-
Step 700
700 (this color)
#644F84
oklch(47.2% 0.087 301.4)
-
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
#292235
oklch(26.9% 0.036 300.9)
#644F84 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) | #425986 | 0.055 |
| Deuteranopia (no green cones) | #465983 | 0.052 |
| Tritanopia (no blue cones) | #5E5863 | 0.068 |
| Achromatopsia (no color) | #595959 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644F84
#644F84
oklch(47.2% 0.087 301.4)
- #546326
#546326
oklch(47.3% 0.087 121.4)
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 #644F84, 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 0.038
- Dusty Grape #545775 ΔE 0.045
- Dusky Blue #475F94 ΔE 0.059
- Muted Purple #805B87 ΔE 0.062
- Denim Blue #3B5B92 ΔE 0.065
- YInMn Blue #415A77 ΔE 0.066
- Dull Purple #84597E ΔE 0.067
Use #644F84 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.