# #657ca4

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

## Values

- Hex: `#657ca4`
- RGB: rgb(101, 124, 164)
- HSL: hsl(218, 26%, 52%)
- OKLCH: oklch(0.584 0.067 261.3)
- Relative luminance: 0.1986
- Nearest named color: Bay View (#6a819e, Δ 2.085) — https://brandsweets.com/colors/bay-view
- Moods: cool, muted
- Page: https://brandsweets.com/colors/657ca4

## Tints & shades

- Tints (toward white): #758aae, #8295b5, #92a2bf, #9fadc6, #afbbd0, #bfc8d9, #ccd3e1, #dce1ea, #e9ecf2, #f9fafb
- Shades (toward black): #597097, #4f6487, #485a7a, #3e4e6a, #35425a, #2b374a, #222b3a, #1a212d, #11151d, #08090d

## Harmonies

- Complementary: #a48d65
- Analogous: #659ca4, #6d65a4
- Triadic: #a4657c, #7ca465
- Split-complementary: #a46d65, #9ca465
- Tetradic: #a4659c, #a48d65, #65a46d

## Colors that go with #657ca4

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 #657ca4: 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 #657ca4 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: Atelier (https://brandsweets.com/palettes/elegant#atelier), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Dusk (https://brandsweets.com/palettes/cool#dusk), Notion (https://brandsweets.com/colors/brands/notion). — https://brandsweets.com/colors/copper
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #657ca4 — 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), Mushroom (https://brandsweets.com/palettes/neutral#mushroom), Intel (https://brandsweets.com/colors/brands/intel-com), Next.js (https://brandsweets.com/colors/brands/nextjs-org). — https://brandsweets.com/colors/seagreen
- **Amber** #ffbf00 [pool] — Amber is paired with #657ca4 in 6 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 #657ca4, as the accent. Seen in: Qualcomm (https://brandsweets.com/colors/brands/qualcomm-com), Activision (https://brandsweets.com/colors/brands/activision-com), Pixar (https://brandsweets.com/colors/brands/pixar-com), Readymag (https://brandsweets.com/colors/brands/readymag-com). — https://brandsweets.com/colors/blue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #657ca4: 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), Ink & Paper (https://brandsweets.com/palettes/minimal#ink-and-paper). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #657ca4 in 12 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 #657ca4: 5 real palettes, including Astro's brand system and Deep Water, as the supporting colour. Seen in: Astro (https://brandsweets.com/colors/brands/astro-build), Deep Water (https://brandsweets.com/palettes/dark#deep-water), Telegram (https://brandsweets.com/colors/brands/telegram-org), Venmo (https://brandsweets.com/colors/brands/venmo-com). — https://brandsweets.com/colors/deepskyblue

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

- On white (#ffffff): 4.22:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #5e77a1 (4.54:1); AA: background → #0f0f0f (4.54:1); AAA: text → #465877 (7.19:1)
- On black (#000000): 4.97:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #8597b7 (7.11:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/657ca4-9ca6c4-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: "#657ca4" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.