#8166DB
Closest named color: Medium Slate Blue (#7B68EE). oklch(59.3% 0.172 290.9), rgb(129, 102, 219).
Aa
Black text reads best on this color (4.85:1).
About this color
#8166DB is a medium-dark, vivid purple. In OKLCH its lightness is 59%, its chroma 0.172 and its hue 291°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.030 away. Black text reads best on it, at 4.85:1.
| Hue family | Purples |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.172) |
| Temperature | in between |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 4.85:1 |
| White text | 4.32:1 |
Values
| HEX | #8166DB |
| RGB | rgb(129, 102, 219) |
| HSL | hsl(254, 62%, 63%) |
| OKLCH | oklch(59.3% 0.172 290.9) |
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 #8166DB | 4.32:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #8166DB | 4.85:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #8166DB text on white | 4.32:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #8166DB text on black | 4.85:1 | AA | Lc -32.0 | 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 600.
-
Step 50
50
#F5F4FC
oklch(97% 0.011 292)
-
Step 100
100
#E9E8F8
oklch(93.6% 0.021 288.9)
-
Step 200
200
#D8D5F4
oklch(88.5% 0.042 289.9)
-
Step 300
300
#C0B8EF
oklch(80.8% 0.077 291.2)
-
Step 400
400
#A192E8
oklch(70.7% 0.124 290.9)
-
Step 500
500
#8B75E1
oklch(63.2% 0.158 290.5)
-
Step 600
600 (this color)
#8166DB
oklch(59.3% 0.172 290.9)
-
Step 700
700
#6449B3
oklch(49.1% 0.161 291)
-
Step 800
800
#513D91
oklch(42.7% 0.133 290.6)
-
Step 900
900
#433573
oklch(37.7% 0.103 291.1)
-
Step 950
950
#272044
oklch(27.1% 0.065 290.3)
#8166DB 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) | #2F7CDF | 0.101 |
| Deuteranopia (no green cones) | #3377D8 | 0.097 |
| Tritanopia (no blue cones) | #687F97 | 0.141 |
| Achromatopsia (no color) | #797979 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8166DB
#8166DB
oklch(59.3% 0.172 290.9)
- #828400
#828400
oklch(59.2% 0.13 110.8)
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 #8166DB, closest first.
No curated palette has a color within ΔE 0.04 of #8166DB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.030
- Purpley #8756E4 ΔE 0.039
- Medium Purple #9370DB ΔE 0.040
- Light Indigo #6D5ACF ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.049
- Slate Blue #6A5ACD ΔE 0.052
- Deep Lavender #8D5EB7 ΔE 0.059
- Amethyst #9B5FC0 ΔE 0.060
Use #8166DB 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.