# #8a66e5

A color — cool, vivid, technical, modern. Deterministic analysis from BrandSweets (no inference).

## Values

- Hex: `#8a66e5`
- RGB: rgb(138, 102, 229)
- HSL: hsl(257, 71%, 65%)
- OKLCH: oklch(0.608 0.185 293.2)
- Relative luminance: 0.2056
- Nearest named color: mediumslateblue (#7b68ee, Δ 2.719) — https://brandsweets.com/colors/mediumslateblue
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/8a66e5

## Tints & shades

- Tints (toward white): #9473e7, #a285ea, #ac92ed, #b69fef, #c3b1f2, #cdbef4, #d7cbf6, #e1d8f8, #eee9fb, #f8f6fe
- Shades (toward black): #764ce1, #6232dc, #5323cd, #481eb3, #3e1a99, #31157a, #271060, #1c0c46, #12072c, #070311

## Harmonies

- Complementary: #c1e566
- Analogous: #6682e5, #ca66e5
- Triadic: #e58a66, #66e58a
- Split-complementary: #e5ca66, #82e566
- Tetradic: #e56682, #c1e566, #66e5ca

## Colors that go with #8a66e5

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Midnight Blue** #191970 [pool] — 4 real palettes, including Lavender Haze and Discord's brand system put Midnight Blue beside #8a66e5, as that palette's text colour. Seen in: Lavender Haze (https://brandsweets.com/palettes/playful#lavender-haze), Discord (https://brandsweets.com/colors/brands/discord), Marvel (https://brandsweets.com/colors/brands/marvel-com), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/midnightblue
- **Taupe** #483c32 [pool] — Taupe is paired with #8a66e5 in 5 real palettes, including Obsidian's brand system and Zed's brand system, as that palette's text colour. Seen in: Obsidian (https://brandsweets.com/colors/brands/obsidian-md), Zed (https://brandsweets.com/colors/brands/zed-dev), Loom (https://brandsweets.com/colors/brands/loom-com), Superhuman (https://brandsweets.com/colors/brands/superhuman-com). — https://brandsweets.com/colors/taupe
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #8a66e5 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/olive
- **Olive Drab** #6b8e23 [harmony, pool: split] — Olive Drab is a split-complement of #8a66e5: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. Seen in: Spline (https://brandsweets.com/colors/brands/spline-design). — https://brandsweets.com/colors/olivedrab
- **Amber** #ffbf00 [pool] — Amber is paired with #8a66e5 in 3 real palettes, including Mastodon hosted on mastodon.social's brand system and Blueprint, as the accent. Seen in: Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #8a66e5: softer than #000 and cool enough to feel like part of the same palette. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/charcoal
- **Denim** #1560bd [pool] — Designers have shipped Denim with #8a66e5: 3 real palettes, including Linkedin's brand system and Fivetran blue's brand system, as the lead colour. Seen in: Linkedin (https://brandsweets.com/colors/brands/linkedin-com), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com), Coursera (https://brandsweets.com/colors/brands/coursera-org). — https://brandsweets.com/colors/denim
- **Copper** #b87333 [harmony: split] — Copper is a split-complement of #8a66e5: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/copper

## Contrast (WCAG 2.x, as text)

- On white (#ffffff): 4.11:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #8059e3 (4.71:1); AA: background → #121212 (4.56:1); AAA: text → #5f2edc (7.21:1)
- On black (#000000): 5.11:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #a285ea (7.08:1)

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/8a66e5-ac9cc4-dfc24e-291f2d-e9ebf1?lock=0&style=vibrant
(Humans lock/regenerate in the tool; the URL is the state — read `lock=` back to see what they kept.)

## Connect an agent

Point any MCP client at the BrandSweets colors endpoint for the same engine:

- Endpoint: https://mcp.brandsweets.com/colors/mcp
- Tools: `analyze_color` (e.g. `analyze_color({ color: "#8a66e5" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.