#66568E
Closest named color: Twilight (#4E518B). oklch(49.3% 0.089 296.1), rgb(102, 86, 142).
Aa
White text reads best on this color (6.38:1).
About this color
#66568E is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.089 and its hue 296°. 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 6.38:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.089) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.28:1 |
| White text | 6.38:1 |
Values
| HEX | #66568E |
| RGB | rgb(102, 86, 142) |
| HSL | hsl(257, 25%, 45%) |
| OKLCH | oklch(49.3% 0.089 296.1) |
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 #66568E | 6.38:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #66568E | 3.28:1 | AA large text | Lc 22.4 | Dividers and decoration only |
| #66568E text on white | 6.38:1 | AA | Lc 81.7 | Fine for body text |
| #66568E text on black | 3.28:1 | AA large text | Lc -20.2 | 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
#DAD6E8
oklch(88.5% 0.025 296.1)
-
Step 300
300
#C3BBDA
oklch(80.8% 0.044 297.2)
-
Step 400
400
#A498C7
oklch(70.7% 0.069 296.3)
-
Step 500
500
#8E7EB9
oklch(63% 0.089 296.2)
-
Step 600
600
#7867A5
oklch(55.6% 0.096 295.7)
-
Step 700
700 (this color)
#66568E
oklch(49.3% 0.089 296.1)
-
Step 800
800
#534673
oklch(42.7% 0.074 296.4)
-
Step 900
900
#443B5D
oklch(37.7% 0.058 295.7)
-
Step 950
950
#282336
oklch(27.1% 0.035 296)
#66568E 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) | #475F90 | 0.049 |
| Deuteranopia (no green cones) | #495E8D | 0.046 |
| Tritanopia (no blue cones) | #5E606B | 0.073 |
| Achromatopsia (no color) | #5F5F5F | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66568E
#66568E
oklch(49.3% 0.089 296.1)
- #5F6726
#5F6726
oklch(49.2% 0.089 115.6)
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 #66568E, 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 0.045
- Dusky Blue #475F94 ΔE 0.049
- Muted Purple #805B87 ΔE 0.050
- Dusty Grape #545775 ΔE 0.052
- Dusty Purple #825F87 ΔE 0.059
- Dull Purple #84597E ΔE 0.060
- Denim Blue #3B5B92 ΔE 0.061
Use #66568E 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.