# #647bd8

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

## Values

- Hex: `#647bd8`
- RGB: rgb(100, 123, 216)
- HSL: hsl(228, 60%, 62%)
- OKLCH: oklch(0.609 0.143 271.1)
- Relative luminance: 0.2183
- Nearest named color: Blue Jay (#5588dd, Δ 3.511) — https://brandsweets.com/colors/blue-jay
- Moods: cool, vivid, technical, modern
- Page: https://brandsweets.com/colors/647bd8

## Tints & shades

- Tints (toward white): #7489dc, #8193df, #91a1e3, #9dace7, #adbaeb, #bec8ef, #cad2f2, #dae0f6, #e7eaf9, #f7f8fd
- Shades (toward black): #4b66d2, #3352cc, #2e49b8, #28409f, #223687, #1c2c6e, #152256, #101a41, #0a1029, #040710

## Harmonies

- Complementary: #d8c164
- Analogous: #64b5d8, #8764d8
- Triadic: #d8647b, #7bd864
- Split-complementary: #d88764, #b5d864
- Tetradic: #d864b5, #d8c164, #64d887

## Colors that go with #647bd8

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 #647bd8: softer than #000 and cool enough to feel like part of the same palette. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com), Disney (https://brandsweets.com/colors/brands/disney-com), Dusty Blue (https://brandsweets.com/palettes/cool#dusty-blue), Beach Hut (https://brandsweets.com/palettes/light#beach-hut). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #647bd8 — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Subaru (https://brandsweets.com/colors/brands/subaru-com), Intel (https://brandsweets.com/colors/brands/intel-com), Next.js (https://brandsweets.com/colors/brands/nextjs-org), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com). — https://brandsweets.com/colors/seagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #647bd8 in 13 real palettes, including Google's brand system and Mastodon hosted on mastodon.social's brand system, as the accent. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Mastodon hosted on mastodon.social (https://brandsweets.com/colors/brands/mastodon-social), Blueprint (https://brandsweets.com/palettes/technical#blueprint), Walmart (https://brandsweets.com/colors/brands/walmart-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 13 real palettes, including Qualcomm's brand system and Readymag's brand system put Blue beside #647bd8, as the accent. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Penpot (https://brandsweets.com/colors/brands/penpot-app), Cargo (https://brandsweets.com/colors/brands/cargo-site). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #647bd8: 10 real palettes, including Carrefour's brand system and Hershey's's brand system, as the accent. Seen in: Carrefour (https://brandsweets.com/colors/brands/carrefour-com), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), General Mills (https://brandsweets.com/colors/brands/generalmills-com), Intel (https://brandsweets.com/colors/brands/intel-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #647bd8 in 13 real palettes, including Marvel's brand system and Pizza Hut's brand system, as the accent. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), NASCAR (https://brandsweets.com/colors/brands/nascar-com), Foot Locker (https://brandsweets.com/colors/brands/footlocker-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #647bd8: 9 real palettes, including Astro's brand system and Patreon's brand system, as the supporting colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Patreon (https://brandsweets.com/colors/brands/patreon-com), Telegram (https://brandsweets.com/colors/brands/telegram-org), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/deepskyblue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #647bd8: 19 real palettes, including Motorola's brand system and Coursera's brand system, as the accent. Seen in: Motorola (https://brandsweets.com/colors/brands/motorola-com), Coursera (https://brandsweets.com/colors/brands/coursera-org), Xbox (https://brandsweets.com/colors/brands/xbox-com), American Express (https://brandsweets.com/colors/brands/americanexpress-com). — https://brandsweets.com/colors/denim

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

- On white (#ffffff): 3.91:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #546dd4 (4.65:1); AA: background → #171717 (4.58:1); AAA: text → #304dc0 (7.12:1)
- On black (#000000): 5.37:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #8193df (7.17:1)

## 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/647bd8-9c9fc4-df7c4e-231f2d-e9eff1?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: "#647bd8" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.