#66568A
Closest named color: Dusk (#4E5481). oklch(49.1% 0.083 297.4), rgb(102, 86, 138).
Aa
White text reads best on this color (6.43:1).
About this color
#66568A is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.083 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.042 away. White text reads best on it, at 6.43:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.083) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 3.26:1 |
| White text | 6.43:1 |
Values
| HEX | #66568A |
| RGB | rgb(102, 86, 138) |
| HSL | hsl(258, 23%, 44%) |
| OKLCH | oklch(49.1% 0.083 297.4) |
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 #66568A | 6.43:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #66568A | 3.26:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #66568A text on white | 6.43:1 | AA | Lc 81.9 | Fine for body text |
| #66568A text on black | 3.26:1 | AA large text | Lc -20.0 | 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
#EAE8F1
oklch(93.5% 0.012 296.3)
-
Step 200
200
#DAD6E6
oklch(88.4% 0.022 297.4)
-
Step 300
300
#C3BCD8
oklch(81% 0.04 296.9)
-
Step 400
400
#A599C4
oklch(70.8% 0.063 297.6)
-
Step 500
500
#8F7FB5
oklch(63.1% 0.082 297.6)
-
Step 600
600
#7968A1
oklch(55.6% 0.088 297.2)
-
Step 700
700 (this color)
#66568A
oklch(49.1% 0.083 297.4)
-
Step 800
800
#534770
oklch(42.8% 0.068 296.9)
-
Step 900
900
#453B5B
oklch(37.7% 0.055 298.1)
-
Step 950
950
#282335
oklch(27% 0.034 296.8)
#66568A 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) | #495F8C | 0.047 |
| Deuteranopia (no green cones) | #4B5E89 | 0.044 |
| Tritanopia (no blue cones) | #5F5F69 | 0.068 |
| Achromatopsia (no color) | #5E5E5E | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66568A
#66568A
oklch(49.1% 0.083 297.4)
- #5D672C
#5D672C
oklch(49.1% 0.083 117.6)
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 #66568A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.042
- Twilight #4E518B ΔE 0.043
- Dusty Grape #545775 ΔE 0.047
- Muted Purple #805B87 ΔE 0.049
- Dusky Blue #475F94 ΔE 0.049
- Dusty Purple #825F87 ΔE 0.057
- Dull Purple #84597E ΔE 0.057
- Denim Blue #3B5B92 ΔE 0.061
Use #66568A 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.