#8566EB
Closest named color: Medium Slate Blue (#7B68EE). oklch(60.8% 0.192 290.2), rgb(133, 102, 235).
Aa
Black text reads best on this color (5.09:1).
About this color
#8566EB is a medium-dark, vivid purple. In OKLCH its lightness is 61%, its chroma 0.192 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.016 away. Black text reads best on it, at 5.09:1.
| Hue family | Purples |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.192) |
| Temperature | in between |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 5.09:1 |
| White text | 4.11:1 |
Values
| HEX | #8566EB |
| RGB | rgb(133, 102, 235) |
| HSL | hsl(254, 77%, 66%) |
| OKLCH | oklch(60.8% 0.192 290.2) |
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 #8566EB | 4.11:1 | AA large text | Lc -73.5 | Content text, not long reading |
| Black text on #8566EB | 5.09:1 | AA | Lc 36.1 | Non-text elements, placeholder text |
| #8566EB text on white | 4.11:1 | AA large text | Lc 68.0 | Content text, not long reading |
| #8566EB text on black | 5.09:1 | AA | Lc -33.7 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E9E7FB
oklch(93.5% 0.027 290.5)
-
Step 200
200
#D8D4FA
oklch(88.5% 0.052 290.1)
-
Step 300
300
#BFB7FA
oklch(81% 0.094 289.6)
-
Step 400
400
#A18EF7
oklch(70.8% 0.151 290.3)
-
Step 500
500 (this color)
#8566EB
oklch(60.8% 0.192 290.2)
-
Step 600
600
#7751E2
oklch(55.6% 0.209 289.9)
-
Step 700
700
#6540C4
oklch(49.1% 0.194 290.3)
-
Step 800
800
#52369F
oklch(42.7% 0.161 290.1)
-
Step 900
900
#43307E
oklch(37.6% 0.126 290.2)
-
Step 950
950
#271D4A
oklch(27% 0.08 290.2)
#8566EB 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) | #107FEF | 0.117 |
| Deuteranopia (no green cones) | #1B7AE8 | 0.113 |
| Tritanopia (no blue cones) | #67839F | 0.156 |
| Achromatopsia (no color) | #7D7D7D | 0.193 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8566EB
#8566EB
oklch(60.8% 0.192 290.2)
- #888900
#888900
oklch(60.9% 0.133 110.3)
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 #8566EB, closest first.
No curated palette has a color within ΔE 0.04 of #8566EB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.016
- Purpley #8756E4 ΔE 0.035
- Medium Purple #9370DB ΔE 0.044
- Cornflower #6A79F7 ΔE 0.056
- Lighter Purple #A55AF4 ΔE 0.058
- Light Indigo #6D5ACF ΔE 0.064
- Dark Periwinkle #665FD1 ΔE 0.065
- Slate Blue #6A5ACD ΔE 0.069
Use #8566EB 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.