#866CFF
Closest named color: Medium Slate Blue (#7B68EE). oklch(63.2% 0.209 286.9), rgb(134, 108, 255).
Aa
Black text reads best on this color (5.60:1).
About this color
#866CFF is a medium-light, vivid purple. In OKLCH its lightness is 63%, its chroma 0.209 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.032 away. Black text reads best on it, at 5.60:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.209) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 5.60:1 |
| White text | 3.74:1 |
Values
| HEX | #866CFF |
| RGB | rgb(134, 108, 255) |
| HSL | hsl(251, 100%, 71%) |
| OKLCH | oklch(63.2% 0.209 286.9) |
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 #866CFF | 3.74:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #866CFF | 5.60:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #866CFF text on white | 3.74:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #866CFF text on black | 5.60:1 | AA | Lc -37.0 | 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 500.
-
Step 50
50
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E8E7FD
oklch(93.5% 0.03 287.9)
-
Step 200
200
#D6D4FE
oklch(88.5% 0.058 287.3)
-
Step 300
300
#BCB7FF
oklch(80.9% 0.101 287.1)
-
Step 400
400
#9B8EFF
oklch(70.7% 0.161 286.8)
-
Step 500
500 (this color)
#866CFF
oklch(63.2% 0.209 286.9)
-
Step 600
600
#724DEE
oklch(55.6% 0.228 287)
-
Step 700
700
#603CCF
oklch(49% 0.212 287)
-
Step 800
800
#4E34A7
oklch(42.7% 0.174 286.9)
-
Step 900
900
#402F85
oklch(37.7% 0.137 286.9)
-
Step 950
950
#251D4E
oklch(27.1% 0.087 286.6)
#866CFF 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) | #0088FF | 0.116 |
| Deuteranopia (no green cones) | #0080FC | 0.114 |
| Tritanopia (no blue cones) | #5D8EAB | 0.175 |
| Achromatopsia (no color) | #848484 | 0.210 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #866CFF
#866CFF
oklch(63.2% 0.209 286.9)
- #948E00
#948E00
oklch(63.1% 0.135 106.7)
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 #866CFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.032
- Cornflower #6A79F7 ΔE 0.048
- Periwinkle #8E82FE ΔE 0.054
- Purpley #8756E4 ΔE 0.060
- Medium Purple #9370DB ΔE 0.060
- Lighter Purple #A55AF4 ΔE 0.061
- Lavender Blue #8B88F8 ΔE 0.069
- Light Urple #B36FF6 ΔE 0.077
Use #866CFF 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.