#8B66CE
Closest named color: Medium Purple (#9370DB). oklch(59.5% 0.156 297.9), rgb(139, 102, 206).
Aa
Black text reads best on this color (4.88:1).
About this color
#8B66CE is a medium-dark, vivid purple. In OKLCH its lightness is 59%, its chroma 0.156 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Purple (#9370DB), ΔE 0.033 away. Black text reads best on it, at 4.88:1.
| Hue family | Purples |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Medium Purple (#9370DB) |
| Black text | 4.88:1 |
| White text | 4.29:1 |
Values
| HEX | #8B66CE |
| RGB | rgb(139, 102, 206) |
| HSL | hsl(261, 51%, 60%) |
| OKLCH | oklch(59.5% 0.156 297.9) |
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 #8B66CE | 4.29:1 | AA large text | Lc -75.0 | Content text, not long reading |
| Black text on #8B66CE | 4.88:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #8B66CE text on white | 4.29:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #8B66CE text on black | 4.88:1 | AA | Lc -32.2 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F7
oklch(93.6% 0.022 297.4)
-
Step 200
200
#DCD4F2
oklch(88.6% 0.042 297.7)
-
Step 300
300
#C6B7EC
oklch(81% 0.075 297.7)
-
Step 400
400
#AA8FE3
oklch(70.7% 0.123 298)
-
Step 500
500 (this color)
#8B66CE
oklch(59.5% 0.156 297.9)
-
Step 600
600
#8157C8
oklch(55.6% 0.169 297.8)
-
Step 700
700
#6D46AD
oklch(49.1% 0.158 297.7)
-
Step 800
800
#593A8C
oklch(42.7% 0.131 298.1)
-
Step 900
900
#493370
oklch(37.7% 0.102 298)
-
Step 950
950
#2A1E41
oklch(26.8% 0.064 297.7)
#8B66CE 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) | #417AD2 | 0.102 |
| Deuteranopia (no green cones) | #4A79CC | 0.095 |
| Tritanopia (no blue cones) | #7D7A90 | 0.123 |
| Achromatopsia (no color) | #7A7A7A | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #8B66CE
#8B66CE
oklch(59.5% 0.156 297.9)
- #788900
#788900
oklch(59.5% 0.139 118.1)
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 #8B66CE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Purple #9370DB ΔE 0.033
- Amethyst #9B5FC0 ΔE 0.036
- Deep Lavender #8D5EB7 ΔE 0.037
- Deep Lilac #966EBD ΔE 0.041
- Purpley #8756E4 ΔE 0.052
- Medium Slate Blue #7B68EE ΔE 0.055
- Light Indigo #6D5ACF ΔE 0.060
- Dark Periwinkle #665FD1 ΔE 0.064
Use #8B66CE 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.