# #42566c

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

## Values

- Hex: `#42566c`
- RGB: rgb(66, 86, 108)
- HSL: hsl(211, 24%, 34%)
- OKLCH: oklch(0.446 0.044 251.2)
- Relative luminance: 0.089
- Nearest named color: Black Orchid (#525463, Δ 2.548) — https://brandsweets.com/colors/black-orchid
- Moods: cool, muted
- Page: https://brandsweets.com/colors/42566c

## Tints & shades

- Tints (toward white): #4e657e, #5b7795, #6a86a4, #8198b1, #93a8bd, #a6b7c9, #bdc9d6, #d0d8e2, #e6eaef, #f9fafb
- Shades (toward black): #3c4e62, #364759, #303f4f, #2b3846, #25303c, #1f2833, #192129, #131920, #0e1216, #080a0d

## Harmonies

- Complementary: #6c5742
- Analogous: #426b6c, #43426c
- Triadic: #6c4256, #566c42
- Split-complementary: #6c4342, #6b6c42
- Tetradic: #6c426b, #6c5742, #426c43

## Colors that go with #42566c

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

- **Sienna** #a0522d [harmony, pool: complementary] — Sienna sits directly opposite #42566c on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight. Seen in: BrandSweets (https://brandsweets.com/colors/brands/brandsweets). — https://brandsweets.com/colors/sienna
- **Blue** #0000ff [pool] — 7 real palettes, including Alaska Airlines's brand system and Jeep's brand system put Blue beside #42566c, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Jeep (https://brandsweets.com/colors/brands/jeep-com), Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #42566c: 4 real palettes, including Dusk and Open House, as the supporting colour. Seen in: Dusk (https://brandsweets.com/palettes/cool#dusk), Open House (https://brandsweets.com/palettes/clean#open-house), Alpine (https://brandsweets.com/palettes/cool#alpine), Paper & Pine (https://brandsweets.com/palettes/minimal#paper-and-pine). — https://brandsweets.com/colors/cadetblue
- **Crimson** #dc143c [pool] — Crimson is paired with #42566c in 8 real palettes, including Codecademy's brand system and Walgreens's brand system, as the accent. Seen in: Codecademy (https://brandsweets.com/colors/brands/codecademy-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #42566c: 13 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 #42566c in 5 real palettes, including Fireside and Open House, as the accent. Seen in: Fireside (https://brandsweets.com/palettes/dark#fireside), Open House (https://brandsweets.com/palettes/clean#open-house), Mid-Century (https://brandsweets.com/palettes/warm#mid-century), Disney (https://brandsweets.com/colors/brands/disney-com). — https://brandsweets.com/colors/goldenrod
- **Medium Sea Green** #3cb371 [pool] — Medium Sea Green is paired with #42566c 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
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #42566c: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy. — https://brandsweets.com/colors/whitesmoke

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

- On white (#ffffff): 7.56:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.78:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #5b7795 (4.52:1); AA: background → #c9c9c9 (4.56:1); AAA: text → #8198b1 (7.06:1); AAA: background → #f7f7f7 (7.05:1)

## Brands using this color

- **HP** — secondary #485571 (Δ 1.31) — https://brandsweets.com/colors/brands/hp-com

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/42566c-9cabc4-df534e-1f202d-e9f1f1?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: "#42566c" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.