# #05388f

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

## Values

- Hex: `#05388f`
- RGB: rgb(5, 56, 143)
- HSL: hsl(218, 93%, 29%)
- OKLCH: oklch(0.372 0.153 261)
- Relative luminance: 0.0484
- Nearest named color: Deep Space Royal (#223382, Δ 3.039) — https://brandsweets.com/colors/deep-space-royal
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/05388f

## Tints & shades

- Tints (toward white): #0645b1, #0852d4, #0960f6, #2b76f7, #4e8cf9, #6ba0fa, #8eb6fb, #b0ccfc, #d3e2fd, #f5f9ff
- Shades (toward black): #053485, #042e76, #042a6c, #03245e, #032154, #021b45, #02173b, #02112c, #010d22, #010814

## Harmonies

- Complementary: #8f5c05
- Analogous: #057c8f, #18058f
- Triadic: #8f0538, #388f05
- Split-complementary: #8f1805, #7c8f05
- Tetradic: #8f057c, #8f5c05, #058f18

## Colors that go with #05388f

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 #05388f: softer than #000 and cool enough to feel like part of the same palette. Seen in: dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Boeing (https://brandsweets.com/colors/brands/boeing-com), CeraVe (https://brandsweets.com/colors/brands/cerave-com), Tumblr (https://brandsweets.com/colors/brands/tumblr-com). — https://brandsweets.com/colors/charcoal
- **Crimson** #dc143c [harmony, pool: triadic] — Crimson completes a triad with #05388f — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Walgreens (https://brandsweets.com/colors/brands/walgreens-com), Nintendo (https://brandsweets.com/colors/brands/nintendo-com), Pepsi (https://brandsweets.com/colors/brands/pepsi-com). — https://brandsweets.com/colors/crimson
- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #05388f's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Hershey's (https://brandsweets.com/colors/brands/hersheys-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Glacier (https://brandsweets.com/palettes/cool#glacier), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/steelblue
- **Blue** #0000ff [pool] — 6 real palettes, including Procter & Gamble's brand system and CVS's brand system put Blue beside #05388f, as the supporting colour. Seen in: Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), CVS (https://brandsweets.com/colors/brands/cvs-com), Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Tesco (https://brandsweets.com/colors/brands/tesco-com). — https://brandsweets.com/colors/blue
- **Denim** #1560bd [pool] — Designers have shipped Denim with #05388f: 14 real palettes, including Warbyparker's brand system and Unilever's brand system, as the accent. Seen in: Warbyparker (https://brandsweets.com/colors/brands/warbyparker-com), Unilever (https://brandsweets.com/colors/brands/unilever-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com), General Mills (https://brandsweets.com/colors/brands/generalmills-com). — https://brandsweets.com/colors/denim
- **Orange Red** #ff4500 [pool] — Orange Red is paired with #05388f in 4 real palettes, including NASA's brand system and Tide's brand system, as the supporting colour. Seen in: NASA (https://brandsweets.com/colors/brands/nasa-gov), Tide (https://brandsweets.com/colors/brands/tide-com), Tumblr (https://brandsweets.com/colors/brands/tumblr-com), Intercom (https://brandsweets.com/colors/brands/intercom-com). — https://brandsweets.com/colors/orangered
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #05388f in 12 real palettes, including Nokia's brand system and Nivea's brand system, as the supporting colour. Seen in: Nokia (https://brandsweets.com/colors/brands/nokia-com), Nivea (https://brandsweets.com/colors/brands/nivea-com), Discord (https://brandsweets.com/colors/brands/discord), Carrefour (https://brandsweets.com/colors/brands/carrefour-com). — https://brandsweets.com/colors/royalblue
- **Tomato** #ff6347 [pool] — 5 real palettes, including dbt Labs's brand system and Harley-Davidson's brand system put Tomato beside #05388f, as the lead colour. Seen in: dbt Labs (https://brandsweets.com/colors/brands/getdbt-com), Harley-Davidson (https://brandsweets.com/colors/brands/harley-davidson-com), Etsy (https://brandsweets.com/colors/brands/etsy-com), Fivetran blue (https://brandsweets.com/colors/brands/fivetran-com). — https://brandsweets.com/colors/tomato

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

- On white (#ffffff): 10.67:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.97:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #1d6df7 (4.58:1); AA: background → #ababab (4.64:1); AAA: text → #5d96f9 (7.2:1); AAA: background → #d4d4d4 (7.2:1)

## Brands using this color

- **Hershey's** — secondary #003594 (Δ 1.164) — https://brandsweets.com/colors/brands/hersheys-com
- **NASA** — primary #0b3d91 (Δ 1.447) — https://brandsweets.com/colors/brands/nasa-gov
- **Tide** — primary #1b3392 (Δ 1.715) — https://brandsweets.com/colors/brands/tide-com

## Curated palettes containing it

- **Fintech Trust** (cool, clean, modern) — #0b3d91, #4b6a9b, #00a878, #ffffff, #0b1f3a — Navy signals custody and stability; the green accent is money moving the right way. No red anywhere except errors. — tool: https://brandsweets.com/palettes/new/0b3d91-4b6a9b-00a878-ffffff-0b1f3a — collection: https://brandsweets.com/palettes/cool
- **Glacier** (winter, cool, clean, technical) — #0077b6, #90e0ef, #023e8a, #f3f9fc, #03045e — Three blues from ice to deep water on a pale surface — a monochromatic winter set with real depth. — tool: https://brandsweets.com/palettes/new/0077b6-90e0ef-023e8a-f3f9fc-03045e — collection: https://brandsweets.com/palettes/winter

## Fonts for this mood

- technical: https://brandsweets.com/fonts/mood/technical
- modern: https://brandsweets.com/fonts/mood/modern
- 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/05388f-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: "#05388f" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.