#866FF3
Closest named color: Medium Slate Blue (#7B68EE). oklch(62.9% 0.19 287.6), rgb(134, 111, 243).
Aa
Black text reads best on this color (5.58:1).
About this color
#866FF3 is a medium-light, vivid purple. In OKLCH its lightness is 63%, its chroma 0.190 and its hue 288°. Its hue sits on the cool side of the wheel. The nearest named color is Medium Slate Blue (#7B68EE), ΔE 0.025 away. Black text reads best on it, at 5.58:1.
| Hue family | Purples |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.190) |
| Temperature | cool |
| Nearest name | Medium Slate Blue (#7B68EE) |
| Black text | 5.58:1 |
| White text | 3.76:1 |
Values
| HEX | #866FF3 |
| RGB | rgb(134, 111, 243) |
| HSL | hsl(250, 85%, 69%) |
| OKLCH | oklch(62.9% 0.19 287.6) |
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 #866FF3 | 3.76:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #866FF3 | 5.58:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #866FF3 text on white | 3.76:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #866FF3 text on black | 5.58:1 | AA | Lc -36.8 | 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
#E8E7FB
oklch(93.5% 0.027 288.2)
-
Step 200
200
#D6D5FA
oklch(88.6% 0.051 286.6)
-
Step 300
300
#BDB8FA
oklch(81% 0.093 287.6)
-
Step 400
400
#9C90F7
oklch(70.7% 0.148 287.3)
-
Step 500
500 (this color)
#866FF3
oklch(62.9% 0.19 287.6)
-
Step 600
600
#7253E3
oklch(55.5% 0.208 287.5)
-
Step 700
700
#6042C5
oklch(49% 0.193 287.6)
-
Step 800
800
#4E389F
oklch(42.7% 0.159 287.5)
-
Step 900
900
#40327E
oklch(37.7% 0.123 287.4)
-
Step 950
950
#251E4A
oklch(27% 0.079 287.2)
#866FF3 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) | #2787F7 | 0.105 |
| Deuteranopia (no green cones) | #2780F0 | 0.103 |
| Tritanopia (no blue cones) | #648CA6 | 0.159 |
| Achromatopsia (no color) | #848484 | 0.191 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #866FF3
#866FF3
oklch(62.9% 0.19 287.6)
- #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 #866FF3, closest first.
No curated palette has a color within ΔE 0.04 of #866FF3.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Slate Blue #7B68EE ΔE 0.025
- Medium Purple #9370DB ΔE 0.042
- Cornflower #6A79F7 ΔE 0.043
- Periwinkle #8E82FE ΔE 0.049
- Purpley #8756E4 ΔE 0.057
- Lavender Blue #8B88F8 ΔE 0.061
- Lighter Purple #A55AF4 ΔE 0.063
- Light Urple #B36FF6 ΔE 0.074
Use #866FF3 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.