#866CF3
Closest named color: Medium Slate Blue (#7B68EE). oklch(62.4% 0.194 288.3), rgb(134, 108, 243).
Aa
Black text reads best on this color (5.45:1).
About this color
#866CF3 is a medium-light, vivid purple. In OKLCH its lightness is 62%, its chroma 0.194 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.021 away. Black text reads best on it, at 5.45:1.
| Hue family | Purples |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.194) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 5.45:1 |
| White text | 3.85:1 |
Values
| HEX | #866CF3 |
| RGB | rgb(134, 108, 243) |
| HSL | hsl(252, 85%, 69%) |
| OKLCH | oklch(62.4% 0.194 288.3) |
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 #866CF3 | 3.85:1 | AA large text | Lc -71.2 | Content text, not long reading |
| Black text on #866CF3 | 5.45:1 | AA | Lc 38.4 | Non-text elements, placeholder text |
| #866CF3 text on white | 3.85:1 | AA large text | Lc 65.7 | Content text, not long reading |
| #866CF3 text on black | 5.45:1 | AA | Lc -36.0 | 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
#D7D4FB
oklch(88.5% 0.053 288.8)
-
Step 300
300
#BDB7FB
oklch(80.9% 0.095 288.1)
-
Step 400
400
#9E8FF9
oklch(70.8% 0.152 288.4)
-
Step 500
500 (this color)
#866CF3
oklch(62.4% 0.194 288.3)
-
Step 600
600
#7452E4
oklch(55.7% 0.21 288.3)
-
Step 700
700
#6241C6
oklch(49.1% 0.195 288.4)
-
Step 800
800
#4F37A0
oklch(42.7% 0.161 288.1)
-
Step 900
900
#41317F
oklch(37.7% 0.126 288.2)
-
Step 950
950
#261E4B
oklch(27.1% 0.08 288)
#866CF3 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) | #1A85F8 | 0.111 |
| Deuteranopia (no green cones) | #1D7EF0 | 0.109 |
| Tritanopia (no blue cones) | #648AA5 | 0.161 |
| Achromatopsia (no color) | #828282 | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #866CF3
#866CF3
oklch(62.4% 0.194 288.3)
- #8F8C00
#8F8C00
oklch(62.2% 0.134 108.2)
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 #866CF3, closest first.
No curated palette has a color within ΔE 0.04 of #866CF3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.021
- Medium Purple #9370DB ΔE 0.044
- Cornflower #6A79F7 ΔE 0.046
- Purpley #8756E4 ΔE 0.051
- Periwinkle #8E82FE ΔE 0.055
- Lighter Purple #A55AF4 ΔE 0.060
- Lavender Blue #8B88F8 ΔE 0.067
- Light Urple #B36FF6 ΔE 0.075
Use #866CF3 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.