# #647bbe

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

## Values

- Hex: `#647bbe`
- RGB: rgb(100, 123, 190)
- HSL: hsl(225, 41%, 57%)
- OKLCH: oklch(0.594 0.106 268.7)
- Relative luminance: 0.2059
- Nearest named color: Flood (#6677bb, Δ 1.083) — https://brandsweets.com/colors/flood
- Moods: cool, modern
- Page: https://brandsweets.com/colors/647bbe

## Tints & shades

- Tints (toward white): #7387c4, #8193ca, #90a0d0, #9eacd6, #b0bbde, #bec8e4, #cdd4ea, #dbe0f0, #e9edf6, #f8f9fc
- Shades (toward black): #526cb7, #455da5, #3e5393, #364981, #2f3f6f, #26335a, #1e2948, #171e36, #0e1220, #06080e

## Harmonies

- Complementary: #bea864
- Analogous: #64a8be, #7b64be
- Triadic: #be647b, #7bbe64
- Split-complementary: #be7b64, #a8be64
- Tetradic: #be64a8, #bea864, #64be7b

## Colors that go with #647bbe

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 #647bbe: softer than #000 and cool enough to feel like part of the same palette. Seen in: Plaid (https://brandsweets.com/colors/brands/plaid-com), Bloomberg (https://brandsweets.com/colors/brands/bloomberg-com), Hermès (https://brandsweets.com/colors/brands/hermes-com), PlayStation® Official Site: Consoles, Games, Accessories & MoreSony Interactive Entertainment (https://brandsweets.com/colors/brands/playstation-com). — https://brandsweets.com/colors/charcoal
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #647bbe — 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), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Next.js (https://brandsweets.com/colors/brands/nextjs-org). — https://brandsweets.com/colors/seagreen
- **Copper** #b87333 [harmony, pool: complementary] — Copper sits directly opposite #647bbe on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Notion (https://brandsweets.com/colors/brands/notion), Dusk (https://brandsweets.com/palettes/cool#dusk). — https://brandsweets.com/colors/copper
- **Amber** #ffbf00 [pool] — Amber is paired with #647bbe in 12 real palettes, including Wired's brand system and Beach Hut, as the accent. Seen in: Wired (https://brandsweets.com/colors/brands/wired-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Google (https://brandsweets.com/colors/brands/google-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 10 real palettes, including Qualcomm's brand system and Readymag's brand system put Blue beside #647bbe, as the accent. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Activision (https://brandsweets.com/colors/brands/activision-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #647bbe: 7 real palettes, including Hershey's's brand system and Glacier, as the supporting colour. Seen in: Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Glacier (https://brandsweets.com/palettes/cool#glacier), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), General Mills (https://brandsweets.com/colors/brands/generalmills-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #647bbe in 12 real palettes, including Marvel's brand system and Retro Pop, as the accent. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), NASCAR (https://brandsweets.com/colors/brands/nascar-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #647bbe: 8 real palettes, including Astro's brand system and Telegram's brand system, as the supporting colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Telegram (https://brandsweets.com/colors/brands/telegram-org), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 4.1:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #5a72ba (4.61:1); AA: background → #121212 (4.57:1); AAA: text → #3f5597 (7.1:1)
- On black (#000000): 5.12:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #8597cc (7.3:1)

## Fonts for this mood

- 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/647bbe-9ca1c4-df754e-221f2d-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: "#647bbe" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.