# #30557e

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

## Values

- Hex: `#30557e`
- RGB: rgb(48, 85, 126)
- HSL: hsl(212, 45%, 34%)
- OKLCH: oklch(0.442 0.08 252.3)
- Relative luminance: 0.0863
- Nearest named color: Assassin (#2d4f83, Δ 2.22) — https://brandsweets.com/colors/assassin
- Moods: cool, modern
- Page: https://brandsweets.com/colors/30557e

## Tints & shades

- Tints (toward white): #386394, #4274ae, #5184bd, #6b96c7, #81a6cf, #97b5d8, #b1c8e2, #c8d8ea, #e1eaf4, #f8fafc
- Shades (toward black): #2b4d73, #274568, #233e5c, #1f3651, #1b2f46, #16283b, #122030, #0e1925, #0a111a, #060a0f

## Harmonies

- Complementary: #7e5930
- Analogous: #307b7e, #32307e
- Triadic: #7e3054, #547e30
- Split-complementary: #7e3230, #7b7e30
- Tetradic: #7e307b, #7e5930, #307e32

## Colors that go with #30557e

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

- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #30557e — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Jack Daniel's (https://brandsweets.com/colors/brands/jackdaniels-com), Subaru (https://brandsweets.com/colors/brands/subaru-com), Netflix (https://brandsweets.com/colors/brands/netflix), Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com). — https://brandsweets.com/colors/seagreen
- **Blue** #0000ff [pool] — 7 real palettes, including Tesco's brand system and CVS's brand system put Blue beside #30557e, as the supporting colour. Seen in: Tesco (https://brandsweets.com/colors/brands/tesco-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Activision (https://brandsweets.com/colors/brands/activision-com). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #30557e: 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
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #30557e: 4 real palettes, including Coca-Cola's brand system and Blue Mono, as the supporting colour. Seen in: Coca-Cola (https://brandsweets.com/colors/brands/coca-cola-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Blizzard (https://brandsweets.com/colors/brands/blizzard-com), Gopro (https://brandsweets.com/colors/brands/gopro-com). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #30557e in 16 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), Costco (https://brandsweets.com/colors/brands/costco-com), Wells Fargo (https://brandsweets.com/colors/brands/wellsfargo-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #30557e: 16 real palettes, including HP's brand system and Dutch Bros's brand system, as the accent. Seen in: HP (https://brandsweets.com/colors/brands/hp-com), Dutch Bros (https://brandsweets.com/colors/brands/dutchbros-com), The New York Times (https://brandsweets.com/colors/brands/nytimes-com), Unilever (https://brandsweets.com/colors/brands/unilever-com). — https://brandsweets.com/colors/denim
- **Firebrick** #b22222 [pool] — Designers have shipped Firebrick with #30557e: 4 real palettes, including Fireside and Wendy's's brand system, as the lead colour. Seen in: Fireside (https://brandsweets.com/palettes/dark#fireside), Wendy's (https://brandsweets.com/colors/brands/wendys-com), AT&T (https://brandsweets.com/colors/brands/att-com), Campbell's (https://brandsweets.com/colors/brands/campbells-com). — https://brandsweets.com/colors/firebrick
- **White Smoke** #f5f5f5 [role] — White Smoke is the surface for #30557e: 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): 7.7:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 2.73:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #4377b1 (4.51:1); AA: background → #c7c7c7 (4.56:1); AAA: text → #6f99c8 (7.07:1); AAA: background → #f5f5f5 (7.07:1)

## Fonts for this mood

- modern: https://brandsweets.com/fonts/mood/modern

## Palette tool

Open this color locked as the lead with four explored companions: https://brandsweets.com/palettes/new/30557e-9caac4-df564e-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: "#30557e" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.