#8566DD
Closest named color: Medium Slate Blue (#7B68EE). oklch(59.8% 0.174 292.3), rgb(133, 102, 221).
Aa
Black text reads best on this color (4.94:1).
About this color
#8566DD is a medium-dark, vivid purple. In OKLCH its lightness is 60%, its chroma 0.174 and its hue 292°. 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 4.94:1.
| Hue family | Purples |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.174) |
| Temperature | in between |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 4.94:1 |
| White text | 4.24:1 |
Values
| HEX | #8566DD |
| RGB | rgb(133, 102, 221) |
| HSL | hsl(256, 64%, 63%) |
| OKLCH | oklch(59.8% 0.174 292.3) |
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 #8566DD | 4.24:1 | AA large text | Lc -74.6 | Content text, not long reading |
| Black text on #8566DD | 4.94:1 | AA | Lc 35.0 | Non-text elements, placeholder text |
| #8566DD text on white | 4.24:1 | AA large text | Lc 69.1 | Content text, not long reading |
| #8566DD text on black | 4.94:1 | AA | Lc -32.6 | 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
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#D9D4F7
oklch(88.5% 0.048 291.9)
-
Step 300
300
#C1B7F4
oklch(80.9% 0.086 291.9)
-
Step 400
400
#A38FEE
oklch(70.6% 0.137 292.2)
-
Step 500
500 (this color)
#8566DD
oklch(59.8% 0.174 292.3)
-
Step 600
600
#7A55D6
oklch(55.6% 0.189 292.4)
-
Step 700
700
#6744BA
oklch(49.1% 0.177 292.3)
-
Step 800
800
#543996
oklch(42.7% 0.146 292.5)
-
Step 900
900
#453278
oklch(37.7% 0.115 292.5)
-
Step 950
950
#281E46
oklch(27% 0.072 292.4)
#8566DD 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) | #2E7CE1 | 0.106 |
| Deuteranopia (no green cones) | #3578DA | 0.101 |
| Tritanopia (no blue cones) | #6E7F98 | 0.141 |
| Achromatopsia (no color) | #7B7B7B | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8566DD
#8566DD
oklch(59.8% 0.174 292.3)
- #828700
#828700
oklch(59.9% 0.133 112.4)
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 #8566DD, closest first.
No curated palette has a color within ΔE 0.04 of #8566DD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.030
- Medium Purple #9370DB ΔE 0.035
- Purpley #8756E4 ΔE 0.037
- Light Indigo #6D5ACF ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.056
- Amethyst #9B5FC0 ΔE 0.058
- Slate Blue #6A5ACD ΔE 0.059
- Deep Lavender #8D5EB7 ΔE 0.060
Use #8566DD 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.