#A663D3
Closest named color: Amethyst (#9B5FC0). oklch(62.1% 0.173 309.9), rgb(166, 99, 211).
Aa
Black text reads best on this color (5.34:1).
About this color
#A663D3 is a medium-light, vivid purple. In OKLCH its lightness is 62%, its chroma 0.173 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Amethyst (#9B5FC0), ΔE 0.035 away. Black text reads best on it, at 5.34:1.
| Hue family | Purples |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.173) |
| Temperature | in between |
| Nearest name | Amethyst (#9B5FC0) |
| Black text | 5.34:1 |
| White text | 3.92:1 |
Values
| HEX | #A663D3 |
| RGB | rgb(166, 99, 211) |
| HSL | hsl(276, 56%, 61%) |
| OKLCH | oklch(62.1% 0.173 309.9) |
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 #A663D3 | 3.92:1 | AA large text | Lc -71.8 | Content text, not long reading |
| Black text on #A663D3 | 5.34:1 | AA | Lc 37.7 | Non-text elements, placeholder text |
| #A663D3 text on white | 3.92:1 | AA large text | Lc 66.3 | Content text, not long reading |
| #A663D3 text on black | 5.34:1 | AA | Lc -35.3 | 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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#EFE6F7
oklch(93.7% 0.025 309.4)
-
Step 200
200
#E3D1F1
oklch(88.5% 0.047 310.5)
-
Step 300
300
#D1B2EA
oklch(80.9% 0.084 309.6)
-
Step 400
400
#BA87DF
oklch(70.6% 0.135 309.9)
-
Step 500
500 (this color)
#A663D3
oklch(62.1% 0.173 309.9)
-
Step 600
600
#954AC4
oklch(55.7% 0.189 310)
-
Step 700
700
#7F3AA9
oklch(49.2% 0.175 310.1)
-
Step 800
800
#673189
oklch(42.7% 0.145 309.9)
-
Step 900
900
#542C6D
oklch(37.6% 0.113 310.5)
-
Step 950
950
#311B40
oklch(27% 0.071 309.9)
#A663D3 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) | #437DD7 | 0.143 |
| Deuteranopia (no green cones) | #5982D0 | 0.129 |
| Tritanopia (no blue cones) | #A07692 | 0.121 |
| Achromatopsia (no color) | #808080 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A663D3
#A663D3
oklch(62.1% 0.173 309.9)
- #649900
#649900
oklch(62.2% 0.167 129.9)
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 #A663D3, closest first.
No curated palette has a color within ΔE 0.04 of #A663D3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Amethyst #9B5FC0 ΔE 0.035
- Medium Purple #9370DB ΔE 0.041
- Medium Orchid #BA55D3 ΔE 0.043
- Deep Lilac #966EBD ΔE 0.052
- Lighter Purple #A55AF4 ΔE 0.055
- Soft Purple #A66FB5 ΔE 0.059
- Light Urple #B36FF6 ΔE 0.060
- Deep Lavender #8D5EB7 ΔE 0.061
Use #A663D3 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.