#A66FE4
Closest named color: Medium Purple (#9370DB). oklch(64.9% 0.174 303.6), rgb(166, 111, 228).
Aa
Black text reads best on this color (6.01:1).
About this color
#A66FE4 is a medium-light, vivid purple. In OKLCH its lightness is 65%, its chroma 0.174 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Purple (#9370DB), ΔE 0.034 away. Black text reads best on it, at 6.01:1.
| Hue family | Purples |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.174) |
| Temperature | in between |
| Nearest name | Medium Purple (#9370DB) |
| Black text | 6.01:1 |
| White text | 3.49:1 |
Values
| HEX | #A66FE4 |
| RGB | rgb(166, 111, 228) |
| HSL | hsl(268, 68%, 66%) |
| OKLCH | oklch(64.9% 0.174 303.6) |
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 #A66FE4 | 3.49:1 | AA large text | Lc -67.7 | Content text, not long reading |
| Black text on #A66FE4 | 6.01:1 | AA | Lc 41.9 | Non-text elements, placeholder text |
| #A66FE4 text on white | 3.49:1 | AA large text | Lc 62.2 | Content text, not long reading |
| #A66FE4 text on black | 6.01:1 | AA | Lc -39.5 | 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
#EDE6F8
oklch(93.6% 0.025 303.5)
-
Step 200
200
#DFD2F3
oklch(88.4% 0.047 303.3)
-
Step 300
300
#CCB3EE
oklch(80.8% 0.086 303.9)
-
Step 400
400
#B38AE6
oklch(70.8% 0.137 303.6)
-
Step 500
500 (this color)
#A66FE4
oklch(64.9% 0.174 303.6)
-
Step 600
600
#8C4DCB
oklch(55.5% 0.189 303.9)
-
Step 700
700
#773DB0
oklch(49.1% 0.177 303.7)
-
Step 800
800
#61348E
oklch(42.8% 0.145 303.9)
-
Step 900
900
#4F2E72
oklch(37.7% 0.115 303.8)
-
Step 950
950
#2E1C43
oklch(27% 0.072 303.2)
#A66FE4 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) | #4988E8 | 0.129 |
| Deuteranopia (no green cones) | #5989E1 | 0.118 |
| Tritanopia (no blue cones) | #9B849F | 0.130 |
| Achromatopsia (no color) | #898989 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A66FE4
#A66FE4
oklch(64.9% 0.174 303.6)
- #7C9E00
#7C9E00
oklch(65% 0.161 123.6)
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 #A66FE4, closest first.
No curated palette has a color within ΔE 0.04 of #A66FE4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Purple #9370DB ΔE 0.034
- Light Urple #B36FF6 ΔE 0.034
- Lighter Purple #A55AF4 ΔE 0.053
- Light Purple #BF77F6 ΔE 0.053
- Easter Purple #C071FE ΔE 0.058
- Periwinkle #8E82FE ΔE 0.063
- Medium Orchid #BA55D3 ΔE 0.063
- Amethyst #9B5FC0 ΔE 0.064
Use #A66FE4 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.