# #661ae0

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

## Values

- Hex: `#661ae0`
- RGB: rgb(102, 26, 224)
- HSL: hsl(263, 79%, 49%)
- OKLCH: oklch(0.48 0.257 289.6)
- Relative luminance: 0.0895
- Nearest named color: Electric Indigo (#6600ff, Δ 4.8) — https://brandsweets.com/colors/electric-indigo
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/661ae0

## Tints & shades

- Tints (toward white): #742de6, #8344e9, #925bec, #a172ee, #b088f1, #bd9bf3, #ccb1f6, #dbc8f9, #eadffb, #f9f6fe
- Shades (toward black): #5e18cd, #5315b7, #4b13a4, #40118d, #380e7b, #2e0c64, #250a52, #1b073b, #130529, #080212

## Harmonies

- Complementary: #94e01a
- Analogous: #1a31e0, #c91ae0
- Triadic: #e0661a, #1ae066
- Split-complementary: #e0c91a, #31e01a
- Tetradic: #e01a31, #94e01a, #1ae0c9

## Colors that go with #661ae0

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

- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #661ae0's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Yahoo (https://brandsweets.com/colors/brands/yahoo-com), Signal (https://brandsweets.com/colors/brands/signal-org), EA (https://brandsweets.com/colors/brands/ea-com), Wayfair (https://brandsweets.com/colors/brands/wayfair-com). — https://brandsweets.com/colors/royalblue
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #661ae0: softer than #000 and cool enough to feel like part of the same palette. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), UEFA (https://brandsweets.com/colors/brands/uefa-com), HP (https://brandsweets.com/colors/brands/hp-com). — https://brandsweets.com/colors/charcoal
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #661ae0: 4 real palettes, including Zillow's brand system and Unilever's brand system, as the supporting colour. Seen in: Zillow (https://brandsweets.com/colors/brands/zillow-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Oreo (https://brandsweets.com/colors/brands/oreo-com), Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com). — https://brandsweets.com/colors/cobalt
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #661ae0: 4 real palettes, including Kraken's brand system and Render's brand system, as the accent. Seen in: Kraken (https://brandsweets.com/colors/brands/kraken-com), Render (https://brandsweets.com/colors/brands/render-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #661ae0: 4 real palettes, including Linkedin's brand system and Unilever's brand system, as the lead colour. Seen in: Linkedin (https://brandsweets.com/colors/brands/linkedin-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Dairy Queen (https://brandsweets.com/colors/brands/dairyqueen-com). — https://brandsweets.com/colors/denim
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #661ae0 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
- **Forest Green** #228b22 [harmony: split] — Forest Green is a split-complement of #661ae0: nearly opposite, so it still pops against it, without the vibrating edge of a true complement. — https://brandsweets.com/colors/forestgreen
- **Dark Orchid** #9932cc [harmony, pool: analogous] — Dark Orchid is #661ae0's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Peacock (https://brandsweets.com/palettes/vivid#peacock). — https://brandsweets.com/colors/darkorchid

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

- On white (#ffffff): 7.53:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.79:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #8c52eb (4.52:1); AA: background → #c9c9c9 (4.55:1); AAA: text → #aa7ff0 (7:1); AAA: background → #f7f7f7 (7.03:1)

## 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/661ae0-b09cc4-dfd04e-2b1f2d-e9eaf1?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: "#661ae0" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.