# #63647e

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

## Values

- Hex: `#63647e`
- RGB: rgb(99, 100, 126)
- HSL: hsl(238, 12%, 44%)
- OKLCH: oklch(0.512 0.041 283.1)
- Relative luminance: 0.1327
- Nearest named color: Alley Cat (#656874, Δ 2.318) — https://brandsweets.com/colors/alley-cat
- Moods: cool, muted
- Page: https://brandsweets.com/colors/63647e

## Tints & shades

- Tints (toward white): #6e6f8c, #7e7f9a, #8d8ea5, #9e9fb3, #acadbe, #babbc9, #ccccd7, #dadae2, #ebebef, #f9f9fb
- Shades (toward black): #5a5b72, #515267, #48485b, #3f3f50, #363645, #2d2d39, #24242e, #1b1b22, #121217, #09090b

## Harmonies

- Complementary: #7e7d63
- Analogous: #63717e, #6f637e
- Triadic: #7e6364, #647e63
- Split-complementary: #7e6f63, #717e63
- Tetradic: #7e6371, #7e7d63, #637e6f

## Colors that go with #63647e

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 #63647e: softer than #000 and cool enough to feel like part of the same palette. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), Harbour (https://brandsweets.com/palettes/cool#harbour), Gusto (https://brandsweets.com/colors/brands/gusto-com), Amazon (https://brandsweets.com/colors/brands/amazon-com). — https://brandsweets.com/colors/charcoal
- **Amber** #ffbf00 [pool] — Amber is paired with #63647e in 5 real palettes, including Lemon Squeezy's brand system and McDonald's's brand system, as the lead colour. Seen in: Lemon Squeezy (https://brandsweets.com/colors/brands/lemonsqueezy-com), McDonald's (https://brandsweets.com/colors/brands/mcdonalds-com), Beach Hut (https://brandsweets.com/palettes/light#beach-hut), Warner Bros. (https://brandsweets.com/colors/brands/warnerbros-com). — https://brandsweets.com/colors/amber
- **Champagne** #f7e7ce [pool] — 6 real palettes, including BrandSweets's brand system and Darkroom put Champagne beside #63647e. Seen in: BrandSweets (https://brandsweets.com/colors/brands/brandsweets), Darkroom (https://brandsweets.com/palettes/muted#darkroom), Coffee Bar (https://brandsweets.com/palettes/dark#coffee-bar), Forest Floor (https://brandsweets.com/palettes/dark#forest-floor). — https://brandsweets.com/colors/champagne
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #63647e: 4 real palettes, including Ink & Paper and Fintech Trust, as the accent. Seen in: Ink & Paper (https://brandsweets.com/palettes/minimal#ink-and-paper), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Glacier (https://brandsweets.com/palettes/cool#glacier), Hershey's (https://brandsweets.com/colors/brands/hersheys-com). — https://brandsweets.com/colors/cobalt
- **Copper** #b87333 [pool] — Designers have shipped Copper with #63647e: 4 real palettes, including Dusk and Desert Road, as the accent. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Desert Road (https://brandsweets.com/palettes/warm#desert-road), Riverbed (https://brandsweets.com/palettes/muted#riverbed), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen). — https://brandsweets.com/colors/copper
- **Crimson** #dc143c [pool] — Crimson is paired with #63647e in 12 real palettes, including Retro Pop and Wendy's's brand system, as the lead colour. Seen in: Retro Pop (https://brandsweets.com/palettes/playful#retro-pop), Wendy's (https://brandsweets.com/colors/brands/wendys-com), Marvel (https://brandsweets.com/colors/brands/marvel-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #63647e: 10 real palettes, including Campus and The New York Times's brand system, as the lead colour. Seen in: Campus (https://brandsweets.com/palettes/friendly#campus), The New York Times (https://brandsweets.com/colors/brands/nytimes-com), HP (https://brandsweets.com/colors/brands/hp-com), Discover (https://brandsweets.com/colors/brands/discover-com). — https://brandsweets.com/colors/denim
- **Dark Olive Green** #556b2f [harmony: complementary] — Dark Olive Green sits directly opposite #63647e on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. — https://brandsweets.com/colors/darkolivegreen

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

- On white (#ffffff): 5.75:1 — AA pass, AA-large pass, AAA fail. Fix: AAA: text → #55566d (7.15:1)
- On black (#000000): 3.65:1 — AA fail, AA-large pass, AAA fail. Fix: AA: text → #737491 (4.64:1); AA: background → #e6e6e6 (4.6:1); AAA: text → #9596ac (7.24:1)

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/63647e-9f9cc4-df944e-251f2d-e9edf1?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: "#63647e" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.