# #647eaa

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

## Values

- Hex: `#647eaa`
- RGB: rgb(100, 126, 170)
- HSL: hsl(218, 29%, 53%)
- OKLCH: oklch(0.591 0.074 260.7)
- Relative luminance: 0.2053
- Nearest named color: Bay View (#6a819e, Δ 2.399) — https://brandsweets.com/colors/bay-view
- Moods: cool, muted
- Page: https://brandsweets.com/colors/647eaa

## Tints & shades

- Tints (toward white): #758cb3, #8297ba, #92a4c3, #a0afca, #b0bdd4, #bdc8db, #ced6e4, #dbe1eb, #ebeff4, #f8fafb
- Shades (toward black): #57719e, #4e658d, #45597d, #3c4e6d, #35445f, #2b384f, #222d3f, #19212e, #10151e, #07090d

## Harmonies

- Complementary: #aa9064
- Analogous: #64a1aa, #6e64aa
- Triadic: #aa647e, #7eaa64
- Split-complementary: #aa6e64, #a1aa64
- Tetradic: #aa64a1, #aa9064, #64aa6e

## Colors that go with #647eaa

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 #647eaa: 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
- **Copper** #b87333 [harmony, pool: complementary] — Copper sits directly opposite #647eaa on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Atelier (https://brandsweets.com/palettes/elegant#atelier), Notion (https://brandsweets.com/colors/brands/notion), Riverbed (https://brandsweets.com/palettes/muted#riverbed). — https://brandsweets.com/colors/copper
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #647eaa — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), Intel (https://brandsweets.com/colors/brands/intel-com), Subaru (https://brandsweets.com/colors/brands/subaru-com), Mushroom (https://brandsweets.com/palettes/neutral#mushroom). — https://brandsweets.com/colors/seagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #647eaa in 8 real palettes, including Beach Hut and Wired's brand system, as the supporting colour. Seen in: Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Wired (https://brandsweets.com/colors/brands/wired-com), Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com). — https://brandsweets.com/colors/amber
- **Blue** #0000ff [pool] — 4 real palettes, including Qualcomm's brand system and Activision's brand system put Blue beside #647eaa, as the accent. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Activision (https://brandsweets.com/colors/brands/activision-com), Readymag (https://brandsweets.com/colors/brands/readymag-com), Pixar (https://brandsweets.com/colors/brands/pixar-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #647eaa: 6 real palettes, including Fintech Trust and Hershey's's brand system, as the lead colour. Seen in: Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Glacier (https://brandsweets.com/palettes/cool#glacier), General Mills (https://brandsweets.com/colors/brands/generalmills-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #647eaa in 11 real palettes, including Retro Pop and Marvel's brand system, as the lead colour. Seen in: Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Marvel (https://brandsweets.com/colors/brands/marvel-com), Wendy's (https://brandsweets.com/colors/brands/wendys-com), NASCAR (https://brandsweets.com/colors/brands/nascar-com). — https://brandsweets.com/colors/crimson
- **Deep Sky Blue** #00bfff [pool] — Designers have shipped Deep Sky Blue with #647eaa: 5 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): 4.11:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #5b76a4 (4.59:1); AA: background → #121212 (4.56:1); AAA: text → #45597d (7.05:1)
- On black (#000000): 5.11:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #8297ba (7.08:1)

## Brands using this color

- **Plaid** — primary #6f80b1 (Δ 1.926) — https://brandsweets.com/colors/brands/plaid-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/647eaa-9ca6c4-df644e-201f2d-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: "#647eaa" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.