#A66BC9
Closest named color: Deep Lilac (#966EBD). oklch(62.8% 0.149 311.7), rgb(166, 107, 201).
Aa
Black text reads best on this color (5.56:1).
About this color
#A66BC9 is a medium-light, vivid purple. In OKLCH its lightness is 63%, its chroma 0.149 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Deep Lilac (#966EBD), ΔE 0.034 away. Black text reads best on it, at 5.56:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Deep Lilac (#966EBD) |
| Black text | 5.56:1 |
| White text | 3.77:1 |
Values
| HEX | #A66BC9 |
| RGB | rgb(166, 107, 201) |
| HSL | hsl(278, 47%, 60%) |
| OKLCH | oklch(62.8% 0.149 311.7) |
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 #A66BC9 | 3.77:1 | AA large text | Lc -70.5 | Content text, not long reading |
| Black text on #A66BC9 | 5.56:1 | AA | Lc 39.1 | Non-text elements, placeholder text |
| #A66BC9 text on white | 3.77:1 | AA large text | Lc 65.0 | Content text, not long reading |
| #A66BC9 text on black | 5.56:1 | AA | Lc -36.6 | 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
#EFE6F4
oklch(93.6% 0.021 313.8)
-
Step 200
200
#E2D2ED
oklch(88.5% 0.04 311.7)
-
Step 300
300
#D0B4E3
oklch(80.9% 0.072 311.5)
-
Step 400
400
#B98BD5
oklch(70.7% 0.116 312.1)
-
Step 500
500 (this color)
#A66BC9
oklch(62.8% 0.149 311.7)
-
Step 600
600
#9252B7
oklch(55.7% 0.161 311.5)
-
Step 700
700
#7C429D
oklch(49.1% 0.149 311.5)
-
Step 800
800
#653780
oklch(42.8% 0.124 311.3)
-
Step 900
900
#523066
oklch(37.6% 0.096 311.7)
-
Step 950
950
#301D3C
oklch(27% 0.061 311.2)
#A66BC9 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) | #5680CC | 0.121 |
| Deuteranopia (no green cones) | #6685C6 | 0.110 |
| Tritanopia (no blue cones) | #A27A90 | 0.105 |
| Achromatopsia (no color) | #838383 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66BC9
#A66BC9
oklch(62.8% 0.149 311.7)
- #669A2E
#669A2E
oklch(62.7% 0.148 131.7)
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 #A66BC9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Lilac #966EBD ΔE 0.034
- Soft Purple #A66FB5 ΔE 0.034
- Amethyst #9B5FC0 ΔE 0.036
- Medium Purple #9370DB ΔE 0.041
- Wisteria #A87DC2 ΔE 0.048
- Medium Orchid #BA55D3 ΔE 0.058
- Dark Lilac #9C6DA5 ΔE 0.059
- Deep Lavender #8D5EB7 ΔE 0.060
Use #A66BC9 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.