# #644dff

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

## Values

- Hex: `#644dff`
- RGB: rgb(100, 77, 255)
- HSL: hsl(248, 100%, 65%)
- OKLCH: oklch(0.559 0.249 280.5)
- Relative luminance: 0.1524
- Nearest named color: Candy Grape Fizz (#7755ee, Δ 4.436) — https://brandsweets.com/colors/candy-grape-fizz
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/644dff

## Tints & shades

- Tints (toward white): #725cff, #8370ff, #9180ff, #9e8fff, #afa3ff, #bdb3ff, #cac2ff, #d7d1ff, #e9e5ff, #f6f5ff
- Shades (toward black): #4a2eff, #2f0fff, #2000f0, #1c00d1, #1800b3, #13008f, #0f0070, #0b0052, #070033, #030014

## Harmonies

- Complementary: #e7ff4d
- Analogous: #4d8eff, #be4dff
- Triadic: #ff644d, #4dff64
- Split-complementary: #ffbe4d, #8eff4d
- Tetradic: #ff4d8e, #e7ff4d, #4dffbe

## Colors that go with #644dff

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

- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #644dff: softer than #000 and cool enough to feel like part of the same palette. Seen in: Docker (https://brandsweets.com/colors/brands/docker-com), Zoom (https://brandsweets.com/colors/brands/zoom-us), Campus (https://brandsweets.com/palettes/friendly#campus), UEFA (https://brandsweets.com/colors/brands/uefa-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #644dff — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Coinbase (https://brandsweets.com/colors/brands/coinbase), Subaru (https://brandsweets.com/colors/brands/subaru-com), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Netflix (https://brandsweets.com/colors/brands/netflix). — https://brandsweets.com/colors/seagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #644dff in 5 real palettes, including Mastodon hosted on mastodon.social's brand system and Walmart's brand system, as the accent. Seen in: Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Walmart (https://brandsweets.com/colors/brands/walmart-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 8 real palettes, including Signal's brand system and Dropbox's brand system put Blue beside #644dff, as the supporting colour. Seen in: Signal (https://brandsweets.com/colors/brands/signal-org), Dropbox (https://brandsweets.com/colors/brands/dropbox-com), Headspace (https://brandsweets.com/colors/brands/headspace-com), MongoDB (https://brandsweets.com/colors/brands/mongodb-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #644dff: 8 real palettes, including Nivea's brand system and Behance's brand system, as the lead colour. Seen in: Nivea (https://brandsweets.com/colors/brands/nivea-com), Behance (https://brandsweets.com/colors/brands/behance-net), Nokia (https://brandsweets.com/colors/brands/nokia-com), NHL (https://brandsweets.com/colors/brands/nhl-com). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #644dff: 6 real palettes, including Mastodon hosted on mastodon.social's brand system and Roblox's brand system, as the supporting colour. Seen in: Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Roblox (https://brandsweets.com/colors/brands/roblox-com), Webflow (https://brandsweets.com/colors/brands/webflow-com), NBA (https://brandsweets.com/colors/brands/nba-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #644dff in 10 real palettes, including Toyota's brand system and Behance's brand system, as the supporting colour. Seen in: Toyota (https://brandsweets.com/colors/brands/toyota-com), Behance (https://brandsweets.com/colors/brands/behance-net), WWE (https://brandsweets.com/colors/brands/wwe-com), Coinbase (https://brandsweets.com/colors/brands/coinbase). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #644dff: 4 real palettes, including Calm's brand system and Elastic's brand system, as the lead colour. Seen in: Calm (https://brandsweets.com/colors/brands/calm-com), Elastic (https://brandsweets.com/colors/brands/elastic-co), Render (https://brandsweets.com/colors/brands/render-com), Warp (https://brandsweets.com/colors/brands/warp-dev). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 5.19:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #4124ff (7.19:1)
- On black (#000000): 4.05:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #725cff (4.69:1); AA: background → #f0f0f0 (4.55:1); AAA: text → #9585ff (7.08:1)

## Brands using this color

- **Clerk** — accent #6c47ff (Δ 1.492) — https://brandsweets.com/colors/brands/clerk-com

## 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/644dff-a69cc4-dfac4e-271f2d-e9ecf1?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: "#644dff" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.