# #647bce

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

## Values

- Hex: `#647bce`
- RGB: rgb(100, 123, 206)
- HSL: hsl(227, 52%, 60%)
- OKLCH: oklch(0.603 0.129 270.5)
- Relative luminance: 0.2133
- Nearest named color: Flood (#6677bb, Δ 2.899) — https://brandsweets.com/colors/flood
- Moods: cool, modern
- Page: https://brandsweets.com/colors/647bce

## Tints & shades

- Tints (toward white): #7388d3, #8395d8, #8f9fdc, #9eace0, #aebae5, #bdc7ea, #cdd4ef, #d8def3, #e8ebf8, #f7f8fd
- Shades (toward black): #4d67c7, #3c58be, #354da7, #2f4493, #273a7c, #202f65, #1a2651, #121b3a, #0c1227, #050710

## Harmonies

- Complementary: #ceb764
- Analogous: #64b0ce, #8264ce
- Triadic: #ce647b, #7bce64
- Split-complementary: #ce8264, #b0ce64
- Tetradic: #ce64b0, #ceb764, #64ce82

## Colors that go with #647bce

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 #647bce: 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 #647bce — 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), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com). — https://brandsweets.com/colors/seagreen
- **Copper** #b87333 [harmony, pool: complementary] — Copper sits directly opposite #647bce 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 #647bce in 13 real palettes, including Google's brand system and Wired's brand system, as the accent. Seen in: Google (https://brandsweets.com/colors/brands/google-com), Wired (https://brandsweets.com/colors/brands/wired-com), Walmart (https://brandsweets.com/colors/brands/walmart-com), Wikipedia (https://brandsweets.com/colors/brands/wikipedia-org). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 12 real palettes, including Qualcomm's brand system and Readymag's brand system put Blue beside #647bce, as the accent. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), BBC (https://brandsweets.com/colors/brands/bbc-com), Unity (https://brandsweets.com/colors/brands/unity-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #647bce: 10 real palettes, including Hershey's's brand system and General Mills's brand system, as the supporting colour. Seen in: 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), Glacier (https://brandsweets.com/palettes/cool#glacier). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #647bce in 11 real palettes, including Marvel's brand system and NASCAR's brand system, as the accent. Seen in: Marvel (https://brandsweets.com/colors/brands/marvel-com), NASCAR (https://brandsweets.com/colors/brands/nascar-com), Pizza Hut (https://brandsweets.com/colors/brands/pizzahut-com), State Farm (https://brandsweets.com/colors/brands/statefarm-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #647bce: 9 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), Patreon (https://brandsweets.com/colors/brands/patreon-com), Calm (https://brandsweets.com/colors/brands/calm-com). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 3.99:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #5871ca (4.54:1); AA: background → #141414 (4.62:1); AAA: text → #3751ae (7.12:1)
- On black (#000000): 5.27:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #8395d8 (7.26:1)

## 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/647bce-9ca0c4-df7a4e-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: "#647bce" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.