#646390
Closest named color: Dusky Blue (#475F94). oklch(51.9% 0.071 284.7), rgb(100, 99, 144).
Aa
White text reads best on this color (5.63:1).
About this color
#646390 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 52%, its chroma 0.071 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.044 away. White text reads best on it, at 5.63:1.
| Hue family | Purples |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.72:1 |
| White text | 5.63:1 |
Values
| HEX | #646390 |
| RGB | rgb(100, 99, 144) |
| HSL | hsl(241, 19%, 48%) |
| OKLCH | oklch(51.9% 0.071 284.7) |
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 #646390 | 5.63:1 | AA | Lc -83.4 | Fine for body text |
| Black text on #646390 | 3.72:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #646390 text on white | 5.63:1 | AA | Lc 78.1 | Fine for body text |
| #646390 text on black | 3.72:1 | AA large text | Lc -23.6 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9F0
oklch(93.6% 0.009 286.2)
-
Step 200
200
#D7D8E6
oklch(88.6% 0.019 282.7)
-
Step 300
300
#BEBED6
oklch(80.9% 0.034 285.6)
-
Step 400
400
#9C9CC2
oklch(70.6% 0.055 284.9)
-
Step 500
500
#8484B3
oklch(63.1% 0.07 284.2)
-
Step 600
600
#6E6D9E
oklch(55.5% 0.075 284.6)
-
Step 700
700 (this color)
#646390
oklch(51.9% 0.071 284.7)
-
Step 800
800
#4B4A6E
oklch(42.6% 0.059 284.9)
-
Step 900
900
#3F3E59
oklch(37.7% 0.046 285.7)
-
Step 950
950
#252534
oklch(27.1% 0.028 284.4)
#646390 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) | #566992 | 0.024 |
| Deuteranopia (no green cones) | #55668F | 0.023 |
| Tritanopia (no blue cones) | #596B73 | 0.061 |
| Achromatopsia (no color) | #676767 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #646390
#646390
oklch(51.9% 0.071 284.7)
- #6F6B39
#6F6B39
oklch(51.9% 0.07 104.5)
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 #646390, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.044
- Muted Purple #805B87 ΔE 0.048
- Dusty Purple #825F87 ΔE 0.050
- Metallic Blue #4F738E ΔE 0.053
- Denim #3B638C ΔE 0.055
- Dull Blue #49759C ΔE 0.057
- Dark Lavender #856798 ΔE 0.057
- Dusty Grape #545775 ΔE 0.057
Use #646390 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.