#A666DF
Closest named color: Medium Purple (#9370DB). oklch(63.2% 0.182 306.3), rgb(166, 102, 223).
Aa
Black text reads best on this color (5.58:1).
About this color
#A666DF is a medium-light, vivid purple. In OKLCH its lightness is 63%, its chroma 0.182 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Purple (#9370DB), ΔE 0.038 away. Black text reads best on it, at 5.58:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.182) |
| Temperature | in between |
| Nearest name | Medium Purple (#9370DB) |
| Black text | 5.58:1 |
| White text | 3.75:1 |
Values
| HEX | #A666DF |
| RGB | rgb(166, 102, 223) |
| HSL | hsl(272, 65%, 64%) |
| OKLCH | oklch(63.2% 0.182 306.3) |
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 #A666DF | 3.75:1 | AA large text | Lc -70.3 | Content text, not long reading |
| Black text on #A666DF | 5.58:1 | AA | Lc 39.3 | Non-text elements, placeholder text |
| #A666DF text on white | 3.75:1 | AA large text | Lc 64.8 | Content text, not long reading |
| #A666DF text on black | 5.58:1 | AA | Lc -36.9 | 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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EEE6F8
oklch(93.6% 0.025 305.8)
-
Step 200
200
#E1D1F4
oklch(88.4% 0.05 306)
-
Step 300
300
#CFB2EF
oklch(80.9% 0.09 306.1)
-
Step 400
400
#B787E6
oklch(70.6% 0.143 306.4)
-
Step 500
500 (this color)
#A666DF
oklch(63.2% 0.182 306.3)
-
Step 600
600
#9149CC
oklch(55.6% 0.197 306.3)
-
Step 700
700
#7C39B1
oklch(49.2% 0.184 306.4)
-
Step 800
800
#64308F
oklch(42.6% 0.153 306.1)
-
Step 900
900
#522C72
oklch(37.7% 0.119 306.6)
-
Step 950
950
#301B43
oklch(27.1% 0.075 306.3)
#A666DF 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) | #3D81E3 | 0.145 |
| Deuteranopia (no green cones) | #5384DC | 0.130 |
| Tritanopia (no blue cones) | #9D7C99 | 0.132 |
| Achromatopsia (no color) | #848484 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A666DF
#A666DF
oklch(63.2% 0.182 306.3)
- #719A00
#719A00
oklch(63.2% 0.161 126.2)
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 #A666DF, closest first.
No curated palette has a color within ΔE 0.04 of #A666DF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Purple #9370DB ΔE 0.038
- Lighter Purple #A55AF4 ΔE 0.042
- Light Urple #B36FF6 ΔE 0.044
- Medium Orchid #BA55D3 ΔE 0.048
- Amethyst #9B5FC0 ΔE 0.051
- Deep Lilac #966EBD ΔE 0.063
- Light Purple #BF77F6 ΔE 0.066
- Easter Purple #C071FE ΔE 0.067
Use #A666DF 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.