#A666DE
Closest named color: Medium Purple (#9370DB). oklch(63.2% 0.181 306.6), rgb(166, 102, 222).
Aa
Black text reads best on this color (5.57:1).
About this color
#A666DE is a medium-light, vivid purple. In OKLCH its lightness is 63%, its chroma 0.181 and its hue 307°. 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 5.57:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.181) |
| Temperature | in between |
| Nearest name | Medium Purple (#9370DB) |
| Black text | 5.57:1 |
| White text | 3.76:1 |
Values
| HEX | #A666DE |
| RGB | rgb(166, 102, 222) |
| HSL | hsl(272, 65%, 64%) |
| OKLCH | oklch(63.2% 0.181 306.6) |
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 #A666DE | 3.76:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #A666DE | 5.57:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #A666DE text on white | 3.76:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #A666DE text on black | 5.57:1 | AA | Lc -36.8 | 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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EEE6F8
oklch(93.6% 0.025 305.8)
-
Step 200
200
#E1D1F3
oklch(88.4% 0.049 306.6)
-
Step 300
300
#CFB2EE
oklch(80.9% 0.088 306.5)
-
Step 400
400
#B787E5
oklch(70.6% 0.142 306.6)
-
Step 500
500 (this color)
#A666DE
oklch(63.2% 0.181 306.6)
-
Step 600
600
#9149CB
oklch(55.6% 0.196 306.5)
-
Step 700
700
#7C39B0
oklch(49.2% 0.183 306.6)
-
Step 800
800
#65308E
oklch(42.7% 0.152 307)
-
Step 900
900
#522C72
oklch(37.7% 0.119 306.6)
-
Step 950
950
#301B43
oklch(27.1% 0.075 306.3)
#A666DE 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) | #3E81E2 | 0.144 |
| Deuteranopia (no green cones) | #5484DB | 0.130 |
| Tritanopia (no blue cones) | #9D7C98 | 0.132 |
| Achromatopsia (no color) | #838383 | 0.182 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A666DE
#A666DE
oklch(63.2% 0.181 306.6)
- #709A00
#709A00
oklch(63.2% 0.162 126.5)
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 #A666DE, closest first.
No curated palette has a color within ΔE 0.04 of #A666DE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Purple #9370DB ΔE 0.037
- Lighter Purple #A55AF4 ΔE 0.043
- Light Urple #B36FF6 ΔE 0.045
- Medium Orchid #BA55D3 ΔE 0.048
- Amethyst #9B5FC0 ΔE 0.050
- Deep Lilac #966EBD ΔE 0.062
- Light Purple #BF77F6 ΔE 0.066
- Easter Purple #C071FE ΔE 0.068
Use #A666DE 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.