#A66ECF
Closest named color: Medium Purple (#9370DB). oklch(63.6% 0.151 309.4), rgb(166, 110, 207).
Aa
Black text reads best on this color (5.75:1).
About this color
#A66ECF is a medium-light, vivid purple. In OKLCH its lightness is 64%, its chroma 0.151 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Purple (#9370DB), ΔE 0.036 away. Black text reads best on it, at 5.75:1.
| Hue family | Purples |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Medium Purple (#9370DB) |
| Black text | 5.75:1 |
| White text | 3.65:1 |
Values
| HEX | #A66ECF |
| RGB | rgb(166, 110, 207) |
| HSL | hsl(275, 50%, 62%) |
| OKLCH | oklch(63.6% 0.151 309.4) |
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 #A66ECF | 3.65:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #A66ECF | 5.75:1 | AA | Lc 40.2 | Non-text elements, placeholder text |
| #A66ECF text on white | 3.65:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #A66ECF text on black | 5.75:1 | AA | Lc -37.8 | 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
#E1D2EE
oklch(88.4% 0.041 309.4)
-
Step 300
300
#CFB4E5
oklch(80.9% 0.074 309.6)
-
Step 400
400
#B68BD8
oklch(70.6% 0.118 309.2)
-
Step 500
500 (this color)
#A66ECF
oklch(63.6% 0.151 309.4)
-
Step 600
600
#9052BA
oklch(55.6% 0.164 309.6)
-
Step 700
700
#7A42A0
oklch(49% 0.152 309.4)
-
Step 800
800
#633782
oklch(42.7% 0.126 309.1)
-
Step 900
900
#513068
oklch(37.6% 0.099 309.7)
-
Step 950
950
#2F1D3D
oklch(27% 0.062 308.8)
#A66ECF 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) | #5783D2 | 0.118 |
| Deuteranopia (no green cones) | #6687CC | 0.108 |
| Tritanopia (no blue cones) | #A17E95 | 0.108 |
| Achromatopsia (no color) | #868686 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66ECF
#A66ECF
oklch(63.6% 0.151 309.4)
- #6D9C28
#6D9C28
oklch(63.6% 0.151 129.4)
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 #A66ECF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Purple #9370DB ΔE 0.036
- Deep Lilac #966EBD ΔE 0.038
- Soft Purple #A66FB5 ΔE 0.040
- Amethyst #9B5FC0 ΔE 0.044
- Wisteria #A87DC2 ΔE 0.046
- Medium Orchid #BA55D3 ΔE 0.061
- Light Urple #B36FF6 ΔE 0.062
- Dark Lilac #9C6DA5 ΔE 0.066
Use #A66ECF 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.