#866FF4
Closest named color: Medium Slate Blue (#7B68EE). oklch(62.9% 0.191 287.5), rgb(134, 111, 244).
Aa
Black text reads best on this color (5.59:1).
About this color
#866FF4 is a medium-light, vivid purple. In OKLCH its lightness is 63%, its chroma 0.191 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.026 away. Black text reads best on it, at 5.59:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.191) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 5.59:1 |
| White text | 3.75:1 |
Values
| HEX | #866FF4 |
| RGB | rgb(134, 111, 244) |
| HSL | hsl(250, 86%, 70%) |
| OKLCH | oklch(62.9% 0.191 287.5) |
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 #866FF4 | 3.75:1 | AA large text | Lc -70.3 | Content text, not long reading |
| Black text on #866FF4 | 5.59:1 | AA | Lc 39.3 | Non-text elements, placeholder text |
| #866FF4 text on white | 3.75:1 | AA large text | Lc 64.8 | Content text, not long reading |
| #866FF4 text on black | 5.59:1 | AA | Lc -36.9 | 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
#D6D5FA
oklch(88.6% 0.051 286.6)
-
Step 300
300
#BDB8FA
oklch(81% 0.093 287.6)
-
Step 400
400
#9C90F8
oklch(70.8% 0.149 287.2)
-
Step 500
500 (this color)
#866FF4
oklch(62.9% 0.191 287.5)
-
Step 600
600
#7253E3
oklch(55.5% 0.208 287.5)
-
Step 700
700
#6042C6
oklch(49.1% 0.194 287.4)
-
Step 800
800
#4E38A0
oklch(42.8% 0.16 287.3)
-
Step 900
900
#40327F
oklch(37.7% 0.125 287.2)
-
Step 950
950
#251E4A
oklch(27% 0.079 287.2)
#866FF4 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) | #2587F9 | 0.105 |
| Deuteranopia (no green cones) | #2580F1 | 0.104 |
| Tritanopia (no blue cones) | #638CA7 | 0.159 |
| Achromatopsia (no color) | #848484 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #866FF4
#866FF4
oklch(62.9% 0.191 287.5)
- #928E00
#928E00
oklch(63% 0.136 107.7)
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 #866FF4, closest first.
No curated palette has a color within ΔE 0.04 of #866FF4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.026
- Cornflower #6A79F7 ΔE 0.043
- Medium Purple #9370DB ΔE 0.043
- Periwinkle #8E82FE ΔE 0.048
- Purpley #8756E4 ΔE 0.057
- Lavender Blue #8B88F8 ΔE 0.061
- Lighter Purple #A55AF4 ΔE 0.063
- Light Urple #B36FF6 ΔE 0.074
Use #866FF4 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.