#8366E1
Closest named color: Medium Slate Blue (#7B68EE). oklch(59.9% 0.18 290.8), rgb(131, 102, 225).
Aa
Black text reads best on this color (4.95:1).
About this color
#8366E1 is a medium-dark, vivid purple. In OKLCH its lightness is 60%, its chroma 0.180 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 0.023 away. Black text reads best on it, at 4.95:1.
| Hue family | Purples |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.180) |
| Temperature | in between |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 4.95:1 |
| White text | 4.23:1 |
Values
| HEX | #8366E1 |
| RGB | rgb(131, 102, 225) |
| HSL | hsl(254, 67%, 64%) |
| OKLCH | oklch(59.9% 0.18 290.8) |
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 #8366E1 | 4.23:1 | AA large text | Lc -74.5 | Content text, not long reading |
| Black text on #8366E1 | 4.95:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #8366E1 text on white | 4.23:1 | AA large text | Lc 69.0 | Content text, not long reading |
| #8366E1 text on black | 4.95:1 | AA | Lc -32.7 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#E9E7FA
oklch(93.5% 0.026 290.7)
-
Step 200
200
#D8D4F8
oklch(88.4% 0.049 290.4)
-
Step 300
300
#C0B7F6
oklch(80.9% 0.088 290.8)
-
Step 400
400
#A18FF1
oklch(70.6% 0.141 290.8)
-
Step 500
500 (this color)
#8366E1
oklch(59.9% 0.18 290.8)
-
Step 600
600
#7854DA
oklch(55.6% 0.195 291.1)
-
Step 700
700
#6544BD
oklch(49.1% 0.181 290.8)
-
Step 800
800
#523999
oklch(42.7% 0.15 290.7)
-
Step 900
900
#43327A
oklch(37.6% 0.118 290.5)
-
Step 950
950
#271E47
oklch(26.9% 0.074 290.7)
#8366E1 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) | #277DE5 | 0.107 |
| Deuteranopia (no green cones) | #2D78DE | 0.103 |
| Tritanopia (no blue cones) | #69809A | 0.146 |
| Achromatopsia (no color) | #7B7B7B | 0.180 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8366E1
#8366E1
oklch(59.9% 0.18 290.8)
- #848600
#848600
oklch(59.8% 0.131 110.8)
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 #8366E1, closest first.
No curated palette has a color within ΔE 0.04 of #8366E1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.023
- Purpley #8756E4 ΔE 0.035
- Medium Purple #9370DB ΔE 0.039
- Light Indigo #6D5ACF ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.058
- Cornflower #6A79F7 ΔE 0.060
- Amethyst #9B5FC0 ΔE 0.064
Use #8366E1 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.