#A666B2
Closest named color: Soft Purple (#A66FB5). oklch(60.8% 0.131 321.1), rgb(166, 102, 178).
Aa
Black text reads best on this color (5.16:1).
About this color
#A666B2 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 61%, its chroma 0.131 and its hue 321°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Purple (#A66FB5), ΔE 0.021 away. Black text reads best on it, at 5.16:1.
| Hue family | Purples |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.131) |
| Temperature | in between |
| Nearest name | Soft Purple (#A66FB5) |
| Black text | 5.16:1 |
| White text | 4.06:1 |
Values
| HEX | #A666B2 |
| RGB | rgb(166, 102, 178) |
| HSL | hsl(291, 33%, 55%) |
| OKLCH | oklch(60.8% 0.131 321.1) |
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 #A666B2 | 4.06:1 | AA large text | Lc -73.1 | Content text, not long reading |
| Black text on #A666B2 | 5.16:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #A666B2 text on white | 4.06:1 | AA large text | Lc 67.6 | Content text, not long reading |
| #A666B2 text on black | 5.16:1 | AA | Lc -34.0 | 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
#F8F4F9
oklch(97.2% 0.008 319.4)
-
Step 100
100
#F0E6F2
oklch(93.6% 0.019 320.6)
-
Step 200
200
#E4D2E8
oklch(88.5% 0.035 320.1)
-
Step 300
300
#D4B4DA
oklch(81% 0.063 321)
-
Step 400
400
#BE8BC8
oklch(70.7% 0.103 320.8)
-
Step 500
500 (this color)
#A666B2
oklch(60.8% 0.131 321.1)
-
Step 600
600
#9853A5
oklch(55.5% 0.143 321.1)
-
Step 700
700
#82438E
oklch(49.1% 0.134 321)
-
Step 800
800
#6A3873
oklch(42.8% 0.11 321.3)
-
Step 900
900
#56315D
oklch(37.8% 0.085 321.1)
-
Step 950
950
#321D36
oklch(26.9% 0.053 321)
#A666B2 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) | #5C79B5 | 0.117 |
| Deuteranopia (no green cones) | #6D80B0 | 0.106 |
| Tritanopia (no blue cones) | #A76F84 | 0.081 |
| Achromatopsia (no color) | #7E7E7E | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A666B2
#A666B2
oklch(60.8% 0.131 321.1)
- #529648
#529648
oklch(60.9% 0.132 141.2)
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 #A666B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Purple #A66FB5 ΔE 0.021
- Dark Lilac #9C6DA5 ΔE 0.033
- Deep Lilac #966EBD ΔE 0.034
- Amethyst #9B5FC0 ΔE 0.037
- Deep Lavender #8D5EB7 ΔE 0.052
- Wisteria #A87DC2 ΔE 0.057
- Faded Purple #916E99 ΔE 0.059
- Medium Purple #9370DB ΔE 0.069
Use #A666B2 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.