#A663E4
Closest named color: Lighter Purple (#A55AF4). oklch(63.1% 0.192 305.5), rgb(166, 99, 228).
Aa
Black text reads best on this color (5.52:1).
About this color
#A663E4 is a medium-light, vivid purple. In OKLCH its lightness is 63%, its chroma 0.192 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Lighter Purple (#A55AF4), ΔE 0.032 away. Black text reads best on it, at 5.52:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.192) |
| Temperature | in between |
| Nearest name | Lighter Purple (#A55AF4) |
| Black text | 5.52:1 |
| White text | 3.79:1 |
Values
| HEX | #A663E4 |
| RGB | rgb(166, 99, 228) |
| HSL | hsl(271, 70%, 64%) |
| OKLCH | oklch(63.1% 0.192 305.5) |
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 #A663E4 | 3.79:1 | AA large text | Lc -70.6 | Content text, not long reading |
| Black text on #A663E4 | 5.52:1 | AA | Lc 39.0 | Non-text elements, placeholder text |
| #A663E4 text on white | 3.79:1 | AA large text | Lc 65.1 | Content text, not long reading |
| #A663E4 text on black | 5.52:1 | AA | Lc -36.5 | 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
#F7F3FC
oklch(97% 0.013 306)
-
Step 100
100
#EEE6F9
oklch(93.7% 0.027 304.8)
-
Step 200
200
#E1D1F5
oklch(88.5% 0.052 305.4)
-
Step 300
300
#CFB1F1
oklch(80.8% 0.094 305.8)
-
Step 400
400
#B786EB
oklch(70.7% 0.151 305.2)
-
Step 500
500 (this color)
#A663E4
oklch(63.1% 0.192 305.5)
-
Step 600
600
#9245D2
oklch(55.7% 0.209 305.7)
-
Step 700
700
#7C35B6
oklch(49.1% 0.195 305.4)
-
Step 800
800
#652D93
oklch(42.7% 0.161 305.8)
-
Step 900
900
#522A75
oklch(37.6% 0.126 305.8)
-
Step 950
950
#301A45
oklch(27.1% 0.079 305.3)
#A663E4 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) | #3181E8 | 0.155 |
| Deuteranopia (no green cones) | #4B83E1 | 0.139 |
| Tritanopia (no blue cones) | #9C7C9A | 0.141 |
| Achromatopsia (no color) | #838383 | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A663E4
#A663E4
oklch(63.1% 0.192 305.5)
- #729900
#729900
oklch(63.1% 0.16 125.6)
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 #A663E4, closest first.
No curated palette has a color within ΔE 0.04 of #A663E4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Lighter Purple #A55AF4 ΔE 0.032
- Light Urple #B36FF6 ΔE 0.043
- Medium Purple #9370DB ΔE 0.044
- Medium Orchid #BA55D3 ΔE 0.048
- Amethyst #9B5FC0 ΔE 0.057
- Purpley #8756E4 ΔE 0.064
- Easter Purple #C071FE ΔE 0.066
- Light Purple #BF77F6 ΔE 0.067
Use #A663E4 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.