#A66DC6
Closest named color: Soft Purple (#A66FB5). oklch(63% 0.142 312.4), rgb(166, 109, 198).
Aa
Black text reads best on this color (5.62:1).
About this color
#A66DC6 is a medium-light, vivid purple. In OKLCH its lightness is 63%, its chroma 0.142 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Purple (#A66FB5), ΔE 0.028 away. Black text reads best on it, at 5.62:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Soft Purple (#A66FB5) |
| Black text | 5.62:1 |
| White text | 3.73:1 |
Values
| HEX | #A66DC6 |
| RGB | rgb(166, 109, 198) |
| HSL | hsl(278, 44%, 60%) |
| OKLCH | oklch(63% 0.142 312.4) |
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 #A66DC6 | 3.73:1 | AA large text | Lc -70.2 | Content text, not long reading |
| Black text on #A66DC6 | 5.62:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #A66DC6 text on white | 3.73:1 | AA large text | Lc 64.7 | Content text, not long reading |
| #A66DC6 text on black | 5.62:1 | AA | Lc -37.0 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#EEE6F4
oklch(93.5% 0.021 311.1)
-
Step 200
200
#E2D2EC
oklch(88.5% 0.039 312.6)
-
Step 300
300
#D0B4E1
oklch(80.9% 0.069 312.6)
-
Step 400
400
#B88CD2
oklch(70.7% 0.11 312.4)
-
Step 500
500 (this color)
#A66DC6
oklch(63% 0.142 312.4)
-
Step 600
600
#9253B3
oklch(55.6% 0.155 312.7)
-
Step 700
700
#7C439A
oklch(49.1% 0.144 312.5)
-
Step 800
800
#65387D
oklch(42.7% 0.119 312.5)
-
Step 900
900
#523164
oklch(37.7% 0.092 312.6)
-
Step 950
950
#301D3B
oklch(27% 0.059 312.1)
#A66DC6 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) | #5A81C9 | 0.115 |
| Deuteranopia (no green cones) | #6A85C4 | 0.103 |
| Tritanopia (no blue cones) | #A37A90 | 0.098 |
| Achromatopsia (no color) | #848484 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66DC6
#A66DC6
oklch(63% 0.142 312.4)
- #679A37
#679A37
oklch(62.9% 0.141 132.4)
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 #A66DC6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Purple #A66FB5 ΔE 0.028
- Deep Lilac #966EBD ΔE 0.030
- Amethyst #9B5FC0 ΔE 0.040
- Wisteria #A87DC2 ΔE 0.042
- Medium Purple #9370DB ΔE 0.044
- Dark Lilac #9C6DA5 ΔE 0.054
- Deep Lavender #8D5EB7 ΔE 0.061
- Medium Orchid #BA55D3 ΔE 0.064
Use #A66DC6 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.