#A666D4
Closest named color: Medium Purple (#9370DB). oklch(62.6% 0.17 309.2), rgb(166, 102, 212).
Aa
Black text reads best on this color (5.47:1).
About this color
#A666D4 is a medium-light, vivid purple. In OKLCH its lightness is 63%, its chroma 0.170 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 0.037 away. Black text reads best on it, at 5.47:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.170) |
| Temperature | in between |
| Nearest name | Medium Purple (#9370DB) |
| Black text | 5.47:1 |
| White text | 3.83:1 |
Values
| HEX | #A666D4 |
| RGB | rgb(166, 102, 212) |
| HSL | hsl(275, 56%, 62%) |
| OKLCH | oklch(62.6% 0.17 309.2) |
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 #A666D4 | 3.83:1 | AA large text | Lc -71.1 | Content text, not long reading |
| Black text on #A666D4 | 5.47:1 | AA | Lc 38.5 | Non-text elements, placeholder text |
| #A666D4 text on white | 3.83:1 | AA large text | Lc 65.5 | Content text, not long reading |
| #A666D4 text on black | 5.47:1 | AA | Lc -36.1 | 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
#F8F4FB
oklch(97.2% 0.01 311.2)
-
Step 100
100
#EEE6F6
oklch(93.6% 0.023 308.2)
-
Step 200
200
#E2D1F1
oklch(88.4% 0.047 309.2)
-
Step 300
300
#D0B2EA
oklch(80.8% 0.084 308.9)
-
Step 400
400
#B988DF
oklch(70.7% 0.133 309.2)
-
Step 500
500 (this color)
#A666D4
oklch(62.6% 0.17 309.2)
-
Step 600
600
#934CC3
oklch(55.7% 0.184 309.1)
-
Step 700
700
#7D3CA8
oklch(49.1% 0.171 309.2)
-
Step 800
800
#663288
oklch(42.7% 0.142 309.5)
-
Step 900
900
#532D6D
oklch(37.7% 0.111 309.5)
-
Step 950
950
#301B40
oklch(26.9% 0.07 308.6)
#A666D4 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) | #477FD8 | 0.138 |
| Deuteranopia (no green cones) | #5B83D1 | 0.124 |
| Tritanopia (no blue cones) | #A07993 | 0.121 |
| Achromatopsia (no color) | #828282 | 0.171 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A666D4
#A666D4
oklch(62.6% 0.17 309.2)
- #679A00
#679A00
oklch(62.6% 0.167 129.3)
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 #A666D4, closest first.
No curated palette has a color within ΔE 0.04 of #A666D4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Purple #9370DB ΔE 0.037
- Amethyst #9B5FC0 ΔE 0.038
- Medium Orchid #BA55D3 ΔE 0.046
- Deep Lilac #966EBD ΔE 0.050
- Soft Purple #A66FB5 ΔE 0.056
- Light Urple #B36FF6 ΔE 0.057
- Lighter Purple #A55AF4 ΔE 0.057
- Deep Lavender #8D5EB7 ΔE 0.064
Use #A666D4 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.