#866EF9
Closest named color: Medium Slate Blue (#7B68EE). oklch(63.1% 0.199 287.2), rgb(134, 110, 249).
Aa
Black text reads best on this color (5.61:1).
About this color
#866EF9 is a medium-light, vivid purple. In OKLCH its lightness is 63%, its chroma 0.199 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.028 away. Black text reads best on it, at 5.61:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.199) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 5.61:1 |
| White text | 3.74:1 |
Values
| HEX | #866EF9 |
| RGB | rgb(134, 110, 249) |
| HSL | hsl(250, 92%, 70%) |
| OKLCH | oklch(63.1% 0.199 287.2) |
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 #866EF9 | 3.74:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #866EF9 | 5.61:1 | AA | Lc 39.4 | Non-text elements, placeholder text |
| #866EF9 text on white | 3.74:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #866EF9 text on black | 5.61:1 | 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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#E8E7FC
oklch(93.5% 0.028 288)
-
Step 200
200
#D6D4FC
oklch(88.4% 0.055 287.5)
-
Step 300
300
#BCB7FD
oklch(80.9% 0.098 287.3)
-
Step 400
400
#9C8FFC
oklch(70.8% 0.156 287.2)
-
Step 500
500 (this color)
#866EF9
oklch(63.1% 0.199 287.2)
-
Step 600
600
#7251E8
oklch(55.6% 0.216 287.2)
-
Step 700
700
#6040CA
oklch(49.1% 0.202 287.1)
-
Step 800
800
#4E36A3
oklch(42.7% 0.167 287.2)
-
Step 900
900
#403181
oklch(37.7% 0.129 287.1)
-
Step 950
950
#251D4C
oklch(26.9% 0.083 287.2)
#866EF9 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) | #1387FE | 0.111 |
| Deuteranopia (no green cones) | #1180F6 | 0.110 |
| Tritanopia (no blue cones) | #608DA9 | 0.166 |
| Achromatopsia (no color) | #848484 | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #866EF9
#866EF9
oklch(63.1% 0.199 287.2)
- #938E00
#938E00
oklch(63.1% 0.135 107.2)
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 #866EF9, closest first.
No curated palette has a color within ΔE 0.04 of #866EF9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.028
- Cornflower #6A79F7 ΔE 0.044
- Periwinkle #8E82FE ΔE 0.049
- Medium Purple #9370DB ΔE 0.051
- Purpley #8756E4 ΔE 0.058
- Lighter Purple #A55AF4 ΔE 0.062
- Lavender Blue #8B88F8 ΔE 0.063
- Light Urple #B36FF6 ΔE 0.074
Use #866EF9 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.