# #3f565a

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

## Values

- Hex: `#3f565a`
- RGB: rgb(63, 86, 90)
- HSL: hsl(189, 18%, 30%)
- OKLCH: oklch(0.436 0.029 209.4)
- Relative luminance: 0.0845
- Nearest named color: All Nighter (#455454, Δ 1.157) — https://brandsweets.com/colors/all-nighter
- Moods: cool, muted, dark, luxury, bold
- Page: https://brandsweets.com/colors/3f565a

## Tints & shades

- Tints (toward white): #4d6a6f, #5c7e84, #699096, #7e9fa5, #93afb4, #a8bec2, #bdced1, #cfdbde, #e4ebec, #f9fbfb
- Shades (toward black): #384e51, #34484b, #2e3f42, #2a393c, #243133, #1d282a, #192224, #131a1b, #0f1415, #080b0c

## Harmonies

- Complementary: #5a433f
- Analogous: #3f5a51, #3f485a
- Triadic: #5a3f56, #565a3f
- Split-complementary: #5a3f48, #5a513f
- Tetradic: #513f5a, #5a433f, #485a3f

## Colors that go with #3f565a

Named partners (harmony on the OKLCH wheel, co-occurrence in curated palettes and brand systems, and the neutrals that carry it), best first:

- **Blue** #0000ff [pool] — 5 real palettes, including Jeep's brand system and Rolex's brand system put Blue beside #3f565a, as the accent. Seen in: Jeep (https://brandsweets.com/colors/brands/jeep-com), Rolex (https://brandsweets.com/colors/brands/rolex-com), Warp (https://brandsweets.com/colors/brands/warp-dev), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #3f565a: 4 real palettes, including Paper & Pine and Dusk, as the supporting colour. Seen in: Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine), Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house), Alpine (https://brandsweets.com/palettes/cool#alpine). — https://brandsweets.com/colors/cadetblue
- **Copper** #b87333 [pool] — Designers have shipped Copper with #3f565a: 4 real palettes, including Desert Road and Dusk, as the lead colour. Seen in: Desert Road (https://brandsweets.com/palettes/warm#desert-road), Dusk (https://brandsweets.com/palettes/cool#dusk), Clay & Linen (https://brandsweets.com/palettes/warm#clay-and-linen), Notion (https://brandsweets.com/colors/brands/notion). — https://brandsweets.com/colors/copper
- **Denim** #1560bd [pool] — Designers have shipped Denim with #3f565a: 7 real palettes, including HP's brand system and Hinge's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), Hinge (https://brandsweets.com/colors/brands/hinge-co), Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Starlink (https://brandsweets.com/colors/brands/starlink-com). — https://brandsweets.com/colors/denim
- **Goldenrod** #daa520 [pool] — Goldenrod shows up next to #3f565a in 5 real palettes, including Fireside and Mid-Century, as the accent. Seen in: Fireside (https://brandsweets.com/palettes/dark#fireside), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Disney (https://brandsweets.com/colors/brands/disney-com), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/goldenrod
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #3f565a in 5 real palettes, including Console Light and Mint Modern, as the accent. Seen in: Console Light (https://brandsweets.com/palettes/technical#console-light), Mint Modern (https://brandsweets.com/palettes/modern#mint-modern), Undergrowth (https://brandsweets.com/palettes/dark#undergrowth), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/mediumseagreen
- **Midnight Blue** #191970 [pool] — 7 real palettes, including Lufthansa's brand system and First Snow put Midnight Blue beside #3f565a, as the lead colour. Seen in: Lufthansa (https://brandsweets.com/colors/brands/lufthansa-com), First Snow (https://brandsweets.com/palettes/cool#first-snow), Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/midnightblue
- **White Smoke** #f5f5f5 [role] — White Smoke is the near-white surface #3f565a was made for — maximum legibility with no colour cast to argue with. — https://brandsweets.com/colors/whitesmoke

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

- On white (#ffffff): 7.81:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.69:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5a7b81 (4.58:1); AA: background → #c7c7c7 (4.62:1); AAA: text → #789ba1 (7:1); AAA: background → #f5f5f5 (7.16:1)

## Curated palettes containing it

- **Darkroom** (vintage, muted, warm, editorial) — #7a4b3a, #b89b72, #3f5a5a, #f3ead8, #2c231c — Sepia, faded ochre and a teal shadow on aged paper — the photograph-in-a-drawer palette, tuned so it still passes AA. — tool: https://brandsweets.com/palettes/new/7a4b3a-b89b72-3f5a5a-f3ead8-2c231c — collection: https://brandsweets.com/palettes/vintage

## Fonts for this mood

- luxury: https://brandsweets.com/fonts/mood/luxury
- bold: https://brandsweets.com/fonts/mood/bold

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/3f565a-a2b7be-df4e7e-1f252d-e9f1ee?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: "#3f565a" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.