#A66DD5
Closest named color: Medium Purple (#9370DB). oklch(63.8% 0.159 307.8), rgb(166, 109, 213).
Aa
Black text reads best on this color (5.76:1).
About this color
#A66DD5 is a medium-light, vivid purple. In OKLCH its lightness is 64%, its chroma 0.159 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Purple (#9370DB), ΔE 0.033 away. Black text reads best on it, at 5.76:1.
| Hue family | Purples |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Medium Purple (#9370DB) |
| Black text | 5.76:1 |
| White text | 3.63:1 |
Values
| HEX | #A66DD5 |
| RGB | rgb(166, 109, 213) |
| HSL | hsl(273, 55%, 63%) |
| OKLCH | oklch(63.8% 0.159 307.8) |
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 #A66DD5 | 3.63:1 | AA large text | Lc -69.2 | Content text, not long reading |
| Black text on #A66DD5 | 5.76:1 | AA | Lc 40.3 | Non-text elements, placeholder text |
| #A66DD5 text on white | 3.63:1 | AA large text | Lc 63.7 | Content text, not long reading |
| #A66DD5 text on black | 5.76:1 | AA | Lc -37.9 | 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
#F7F4FB
oklch(97.1% 0.01 305.4)
-
Step 100
100
#EEE6F6
oklch(93.6% 0.023 308.2)
-
Step 200
200
#E1D2F0
oklch(88.5% 0.044 307.9)
-
Step 300
300
#CEB4E8
oklch(80.9% 0.077 307.4)
-
Step 400
400
#B68BDD
oklch(70.8% 0.125 307.6)
-
Step 500
500 (this color)
#A66DD5
oklch(63.8% 0.159 307.8)
-
Step 600
600
#8F50C0
oklch(55.6% 0.173 307.7)
-
Step 700
700
#7A40A6
oklch(49.2% 0.162 307.7)
-
Step 800
800
#633586
oklch(42.6% 0.134 307.9)
-
Step 900
900
#512F6B
oklch(37.6% 0.104 308.4)
-
Step 950
950
#2F1C3F
oklch(26.9% 0.067 307.6)
#A66DD5 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) | #5184D9 | 0.124 |
| Deuteranopia (no green cones) | #6187D2 | 0.113 |
| Tritanopia (no blue cones) | #9F7F97 | 0.116 |
| Achromatopsia (no color) | #868686 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66DD5
#A66DD5
oklch(63.8% 0.159 307.8)
- #6F9C16
#6F9C16
oklch(63.7% 0.159 127.8)
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 #A66DD5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Purple #9370DB ΔE 0.033
- Deep Lilac #966EBD ΔE 0.046
- Amethyst #9B5FC0 ΔE 0.047
- Soft Purple #A66FB5 ΔE 0.050
- Light Urple #B36FF6 ΔE 0.053
- Wisteria #A87DC2 ΔE 0.054
- Medium Orchid #BA55D3 ΔE 0.057
- Lighter Purple #A55AF4 ΔE 0.066
Use #A66DD5 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.