#866BCB
Closest named color: Medium Purple (#9370DB). oklch(59.7% 0.143 294.6), rgb(134, 107, 203).
Aa
Black text reads best on this color (4.97:1).
About this color
#866BCB is a medium-dark, vivid purple. In OKLCH its lightness is 60%, its chroma 0.143 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Purple (#9370DB), ΔE 0.034 away. Black text reads best on it, at 4.97:1.
| Hue family | Purples |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.143) |
| Temperature | in between |
| Nearest name | Medium Purple (#9370DB) |
| Black text | 4.97:1 |
| White text | 4.21:1 |
Values
| HEX | #866BCB |
| RGB | rgb(134, 107, 203) |
| HSL | hsl(257, 48%, 61%) |
| OKLCH | oklch(59.7% 0.143 294.6) |
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 #866BCB | 4.21:1 | AA large text | Lc -74.4 | Content text, not long reading |
| Black text on #866BCB | 4.97:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #866BCB text on white | 4.21:1 | AA large text | Lc 68.9 | Content text, not long reading |
| #866BCB text on black | 4.97:1 | AA | Lc -32.7 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#EAE7F6
oklch(93.5% 0.02 295.2)
-
Step 200
200
#DAD5F1
oklch(88.6% 0.038 293.8)
-
Step 300
300
#C3B8EA
oklch(80.8% 0.071 294.9)
-
Step 400
400
#A592DF
oklch(70.6% 0.112 294.7)
-
Step 500
500 (this color)
#866BCB
oklch(59.7% 0.143 294.6)
-
Step 600
600
#7B5CC4
oklch(55.6% 0.156 294.5)
-
Step 700
700
#684BA9
oklch(49.1% 0.145 294.7)
-
Step 800
800
#553E89
oklch(42.7% 0.12 294.9)
-
Step 900
900
#46366E
oklch(37.9% 0.094 294.7)
-
Step 950
950
#292040
oklch(27.1% 0.059 295.2)
#866BCB 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) | #4A7CCE | 0.084 |
| Deuteranopia (no green cones) | #4F7AC9 | 0.080 |
| Tritanopia (no blue cones) | #767D91 | 0.115 |
| Achromatopsia (no color) | #7B7B7B | 0.144 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #866BCB
#866BCB
oklch(59.7% 0.143 294.6)
- #7E8800
#7E8800
oklch(59.8% 0.135 114.8)
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 #866BCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Purple #9370DB ΔE 0.034
- Deep Lilac #966EBD ΔE 0.036
- Deep Lavender #8D5EB7 ΔE 0.041
- Amethyst #9B5FC0 ΔE 0.044
- Medium Slate Blue #7B68EE ΔE 0.058
- Light Indigo #6D5ACF ΔE 0.062
- Dark Periwinkle #665FD1 ΔE 0.063
- Purpley #8756E4 ΔE 0.064
Use #866BCB 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.