#644E8F
Closest named color: Twilight (#4E518B). oklch(47.6% 0.104 297.9), rgb(100, 78, 143).
Aa
White text reads best on this color (6.93:1).
About this color
#644E8F is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.104 and its hue 298°. 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 6.93:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.02:1 |
| White text | 6.93:1 |
Values
| HEX | #644E8F |
| RGB | rgb(100, 78, 143) |
| HSL | hsl(260, 29%, 43%) |
| OKLCH | oklch(47.6% 0.104 297.9) |
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 #644E8F | 6.93:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #644E8F | 3.02:1 | AA large text | Lc 20.2 | Dividers and decoration only |
| #644E8F text on white | 6.93:1 | AA | Lc 83.9 | Fine for body text |
| #644E8F text on black | 3.02:1 | AA large text | Lc -18.1 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#EBE8F3
oklch(93.7% 0.015 298.6)
-
Step 200
200
#DBD6EA
oklch(88.6% 0.028 297.3)
-
Step 300
300
#C4BADE
oklch(80.9% 0.051 298)
-
Step 400
400
#A696CD
oklch(70.7% 0.081 297.6)
-
Step 500
500
#917BC0
oklch(63% 0.104 298)
-
Step 600
600
#7C64AC
oklch(55.7% 0.111 298.1)
-
Step 700
700 (this color)
#644E8F
oklch(47.6% 0.104 297.9)
-
Step 800
800
#554478
oklch(42.8% 0.086 297.7)
-
Step 900
900
#463961
oklch(37.7% 0.068 298)
-
Step 950
950
#292239
oklch(27.1% 0.043 297.5)
#644E8F 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) | #3B5A91 | 0.064 |
| Deuteranopia (no green cones) | #3F598D | 0.060 |
| Tritanopia (no blue cones) | #5B5A67 | 0.084 |
| Achromatopsia (no color) | #5A5A5A | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #644E8F
#644E8F
oklch(47.6% 0.104 297.9)
- #58640F
#58640F
oklch(47.7% 0.104 117.9)
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 #644E8F, 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 0.046
- Dusky Blue #475F94 ΔE 0.059
- Dusty Grape #545775 ΔE 0.060
- Denim Blue #3B5B92 ΔE 0.065
- Blueberry #464196 ΔE 0.066
- Muted Purple #805B87 ΔE 0.067
- Rebecca Purple #663399 ΔE 0.068
Use #644E8F 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.