#866EFF
Closest named color: Medium Slate Blue (#7B68EE). oklch(63.5% 0.207 286.5), rgb(134, 110, 255).
Aa
Black text reads best on this color (5.68:1).
About this color
#866EFF is a medium-light, vivid purple. In OKLCH its lightness is 64%, its chroma 0.207 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.033 away. Black text reads best on it, at 5.68:1.
| Hue family | Purples |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.207) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 5.68:1 |
| White text | 3.69:1 |
Values
| HEX | #866EFF |
| RGB | rgb(134, 110, 255) |
| HSL | hsl(250, 100%, 72%) |
| OKLCH | oklch(63.5% 0.207 286.5) |
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 #866EFF | 3.69:1 | AA large text | Lc -69.6 | Content text, not long reading |
| Black text on #866EFF | 5.68:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #866EFF text on white | 3.69:1 | AA large text | Lc 64.1 | Content text, not long reading |
| #866EFF text on black | 5.68:1 | AA | Lc -37.5 | 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
#F4F4FE
oklch(97% 0.013 286.1)
-
Step 100
100
#E8E7FD
oklch(93.5% 0.03 287.9)
-
Step 200
200
#D6D4FD
oklch(88.5% 0.056 287.4)
-
Step 300
300
#BBB7FF
oklch(80.9% 0.101 286.5)
-
Step 400
400
#9B8EFF
oklch(70.7% 0.161 286.8)
-
Step 500
500 (this color)
#866EFF
oklch(63.5% 0.207 286.5)
-
Step 600
600
#714FED
oklch(55.7% 0.225 286.5)
-
Step 700
700
#5F3ECE
oklch(49.1% 0.209 286.4)
-
Step 800
800
#4D34A6
oklch(42.6% 0.173 286.6)
-
Step 900
900
#3F3084
oklch(37.7% 0.135 286.2)
-
Step 950
950
#251D4D
oklch(27% 0.085 286.9)
#866EFF 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) | #0089FF | 0.115 |
| Deuteranopia (no green cones) | #0081FC | 0.112 |
| Tritanopia (no blue cones) | #5D8FAC | 0.173 |
| Achromatopsia (no color) | #858585 | 0.208 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #866EFF
#866EFF
oklch(63.5% 0.207 286.5)
- #958F00
#958F00
oklch(63.5% 0.136 106.7)
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 #866EFF, closest first.
No curated palette has a color within ΔE 0.04 of #866EFF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.033
- Cornflower #6A79F7 ΔE 0.046
- Periwinkle #8E82FE ΔE 0.049
- Medium Purple #9370DB ΔE 0.059
- Purpley #8756E4 ΔE 0.063
- Lighter Purple #A55AF4 ΔE 0.063
- Lavender Blue #8B88F8 ΔE 0.065
- Light Urple #B36FF6 ΔE 0.075
Use #866EFF 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.