# #648ddd

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

## Values

- Hex: `#648ddd`
- RGB: rgb(100, 141, 221)
- HSL: hsl(220, 64%, 63%)
- OKLCH: oklch(0.649 0.129 262.7)
- Relative luminance: 0.2698
- Nearest named color: Blue Jay (#5588dd, Δ 2.247) — https://brandsweets.com/colors/blue-jay
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/648ddd

## Tints & shades

- Tints (toward white): #7599e1, #82a2e3, #92afe7, #9fb8ea, #b0c4ee, #bccdf0, #cddaf4, #d9e3f7, #eaf0fa, #f7f9fd
- Shades (toward black): #4b7ad8, #3267d2, #295abc, #244ea3, #1f448e, #1a3875, #142c5c, #0f2043, #09142a, #040811

## Harmonies

- Complementary: #ddb564
- Analogous: #64c9dd, #7864dd
- Triadic: #dd648d, #8ddd64
- Split-complementary: #dd7864, #c9dd64
- Tetradic: #dd64c9, #ddb564, #64dd78

## Colors that go with #648ddd

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 #648ddd: softer than #000 and cool enough to feel like part of the same palette. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Blizzard (https://brandsweets.com/colors/brands/blizzard-com), Lamborghini (https://brandsweets.com/colors/brands/lamborghini-com). — https://brandsweets.com/colors/charcoal
- **Medium Sea Green** #3cb371 [harmony, pool: triadic] — Medium Sea Green completes a triad with #648ddd — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Unity (https://brandsweets.com/colors/brands/unity-com), Terminal (https://brandsweets.com/palettes/technical#terminal), Olympics (https://brandsweets.com/colors/brands/olympics-com), Spotify (https://brandsweets.com/colors/brands/spotify). — https://brandsweets.com/colors/mediumseagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #648ddd in 10 real palettes, including Google's brand system and Blueprint, as the accent. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Heatwave (https://brandsweets.com/palettes/warm#heatwave). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 10 real palettes, including Qualcomm's brand system and Readymag's brand system put Blue beside #648ddd, as the accent. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Unity (https://brandsweets.com/colors/brands/unity-com), Canva (https://brandsweets.com/colors/brands/canva-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #648ddd: 6 real palettes, including Blue Mono and Hershey's's brand system, as the lead colour. Seen in: Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), General Mills (https://brandsweets.com/colors/brands/generalmills-com), Carrefour (https://brandsweets.com/colors/brands/carrefour-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #648ddd in 5 real palettes, including NASCAR's brand system and Marvel's brand system, as the supporting colour. Seen in: NASCAR (https://brandsweets.com/colors/brands/nascar-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), JBL (https://brandsweets.com/colors/brands/jbl-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop). — https://brandsweets.com/colors/crimson
- **Dark Orange** #ff8c00 [pool] — Dark Orange shows up next to #648ddd in 4 real palettes, including Playground and Ahrefs's brand system, as the lead colour. Seen in: Playground (https://brandsweets.com/palettes/bold#playground), Ahrefs (https://brandsweets.com/colors/brands/ahrefs-com), Elastic (https://brandsweets.com/colors/brands/elastic-co), Learning App (https://brandsweets.com/palettes/playful#learning-app). — https://brandsweets.com/colors/darkorange
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #648ddd: 9 real palettes, including Telegram's brand system and Blueprint, as the lead colour. Seen in: Telegram (https://brandsweets.com/colors/brands/telegram-org), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Patreon (https://brandsweets.com/colors/brands/patreon-com), Figma (https://brandsweets.com/colors/brands/figma). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 3.28:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #3f71d5 (4.63:1); AA: background → #262626 (4.61:1); AAA: text → #2754b0 (7.04:1)
- On black (#000000): 6.4:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #7196e0 (7.14:1)

## 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/648ddd-9ca5c4-df694e-211f2d-e9f0f1?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: "#648ddd" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.