# #641fdb

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

## Values

- Hex: `#641fdb`
- RGB: rgb(100, 31, 219)
- HSL: hsl(262, 75%, 49%)
- OKLCH: oklch(0.476 0.249 289.4)
- Relative luminance: 0.088
- Nearest named color: Blurple (#5539cc, Δ 4.384) — https://brandsweets.com/colors/blurple
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/641fdb

## Tints & shades

- Tints (toward white): #7232e2, #8248e5, #915ee8, #a075eb, #af8bee, #bc9df1, #cbb3f4, #dac9f7, #eae0fb, #f9f6fe
- Shades (toward black): #5c1dc9, #5219b3, #4917a1, #3f148a, #371178, #2d0e62, #250b50, #1b083a, #120628, #080312

## Harmonies

- Complementary: #96db1f
- Analogous: #1f38db, #c21fdb
- Triadic: #db641f, #1fdb64
- Split-complementary: #dbc21f, #38db1f
- Tetradic: #db1f38, #96db1f, #1fdbc2

## Colors that go with #641fdb

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 #641fdb'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), Wayfair (https://brandsweets.com/colors/brands/wayfair-com), EA (https://brandsweets.com/colors/brands/ea-com). — https://brandsweets.com/colors/royalblue
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #641fdb: 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 #641fdb: 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 #641fdb: 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 #641fdb: 5 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), Dairy Queen (https://brandsweets.com/colors/brands/dairyqueen-com), Pixar (https://brandsweets.com/colors/brands/pixar-com). — https://brandsweets.com/colors/denim
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #641fdb 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
- **Crimson** #dc143c [pool] — Crimson is paired with #641fdb in 3 real palettes, including Gemstone and Behance's brand system, as the accent. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Behance (https://brandsweets.com/colors/brands/behance-net), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com). — https://brandsweets.com/colors/crimson
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #641fdb: 3 real palettes, including Datadog's brand system and MLB's brand system, as the accent. Seen in: Datadog (https://brandsweets.com/colors/brands/datadoghq-com), MLB (https://brandsweets.com/colors/brands/mlb-com), 3M (https://brandsweets.com/colors/brands/3m-com). — https://brandsweets.com/colors/firebrick

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

- On white (#ffffff): 7.61:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.76:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #8b55e7 (4.55:1); AA: background → #c9c9c9 (4.59:1); AAA: text → #a982ed (7.1:1); AAA: background → #f7f7f7 (7.1:1)

## 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/641fdb-af9cc4-dfce4e-2a1f2d-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: "#641fdb" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.