#A166C9
Closest named color: Amethyst (#9B5FC0). oklch(61.4% 0.155 310.1), rgb(161, 102, 201).
Aa
Black text reads best on this color (5.25:1).
About this color
#A166C9 is a medium-dark, vivid purple. In OKLCH its lightness is 61%, its chroma 0.155 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Amethyst (#9B5FC0), ΔE 0.023 away. Black text reads best on it, at 5.25:1.
| Hue family | Purples |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.155) |
| Temperature | in between |
| Nearest name | Amethyst (#9B5FC0) |
| Black text | 5.25:1 |
| White text | 3.99:1 |
Values
| HEX | #A166C9 |
| RGB | rgb(161, 102, 201) |
| HSL | hsl(276, 48%, 59%) |
| OKLCH | oklch(61.4% 0.155 310.1) |
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 #A166C9 | 3.99:1 | AA large text | Lc -72.5 | Content text, not long reading |
| Black text on #A166C9 | 5.25:1 | AA | Lc 37.1 | Non-text elements, placeholder text |
| #A166C9 text on white | 3.99:1 | AA large text | Lc 67.0 | Content text, not long reading |
| #A166C9 text on black | 5.25:1 | AA | Lc -34.7 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F5
oklch(93.6% 0.022 309.6)
-
Step 200
200
#E2D2EE
oklch(88.5% 0.042 310.9)
-
Step 300
300
#D0B3E6
oklch(80.8% 0.077 310.3)
-
Step 400
400
#B88AD9
oklch(70.6% 0.122 310.2)
-
Step 500
500 (this color)
#A166C9
oklch(61.4% 0.155 310.1)
-
Step 600
600
#9150BB
oklch(55.5% 0.168 310.1)
-
Step 700
700
#7C40A1
oklch(49.1% 0.157 310.4)
-
Step 800
800
#653683
oklch(42.8% 0.13 310.2)
-
Step 900
900
#523069
oklch(37.8% 0.1 310)
-
Step 950
950
#301C3D
oklch(26.9% 0.064 310.7)
#A166C9 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) | #4D7CCC | 0.125 |
| Deuteranopia (no green cones) | #5E80C6 | 0.113 |
| Tritanopia (no blue cones) | #9C768E | 0.109 |
| Achromatopsia (no color) | #7F7F7F | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A166C9
#A166C9
oklch(61.4% 0.155 310.1)
- #64961B
#64961B
oklch(61.5% 0.155 130.2)
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 #A166C9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Amethyst #9B5FC0 ΔE 0.023
- Deep Lilac #966EBD ΔE 0.033
- Medium Purple #9370DB ΔE 0.039
- Soft Purple #A66FB5 ΔE 0.043
- Deep Lavender #8D5EB7 ΔE 0.048
- Medium Orchid #BA55D3 ΔE 0.056
- Wisteria #A87DC2 ΔE 0.062
- Dark Lilac #9C6DA5 ΔE 0.062
Use #A166C9 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.