#66568C
Closest named color: Twilight (#4E518B). oklch(49.2% 0.086 296.7), rgb(102, 86, 140).
Aa
White text reads best on this color (6.41:1).
About this color
#66568C is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.086 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.042 away. White text reads best on it, at 6.41:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.086) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.27:1 |
| White text | 6.41:1 |
Values
| HEX | #66568C |
| RGB | rgb(102, 86, 140) |
| HSL | hsl(258, 24%, 44%) |
| OKLCH | oklch(49.2% 0.086 296.7) |
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 #66568C | 6.41:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #66568C | 3.27:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #66568C text on white | 6.41:1 | AA | Lc 81.8 | Fine for body text |
| #66568C text on black | 3.27:1 | AA large text | Lc -20.1 | 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
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EAE8F1
oklch(93.5% 0.012 296.3)
-
Step 200
200
#DAD6E7
oklch(88.4% 0.023 296.7)
-
Step 300
300
#C3BCD9
oklch(81% 0.041 296.5)
-
Step 400
400
#A498C6
oklch(70.6% 0.067 296.6)
-
Step 500
500
#8E7FB7
oklch(63.1% 0.084 296.2)
-
Step 600
600
#7967A3
oklch(55.5% 0.093 297.1)
-
Step 700
700 (this color)
#66568C
oklch(49.2% 0.086 296.7)
-
Step 800
800
#534671
oklch(42.6% 0.071 297.2)
-
Step 900
900
#443B5C
oklch(37.6% 0.056 296.1)
-
Step 950
950
#282336
oklch(27.1% 0.035 296)
#66568C 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) | #485F8E | 0.048 |
| Deuteranopia (no green cones) | #4A5E8B | 0.045 |
| Tritanopia (no blue cones) | #5E5F6A | 0.069 |
| Achromatopsia (no color) | #5F5F5F | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66568C
#66568C
oklch(49.2% 0.086 296.7)
- #5E6729
#5E6729
oklch(49.2% 0.086 116.6)
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 #66568C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.042
- Dusk #4E5481 ΔE 0.043
- Dusky Blue #475F94 ΔE 0.049
- Dusty Grape #545775 ΔE 0.049
- Muted Purple #805B87 ΔE 0.049
- Dusty Purple #825F87 ΔE 0.058
- Dull Purple #84597E ΔE 0.059
- Denim Blue #3B5B92 ΔE 0.061
Use #66568C 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.