# #0f217b

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

## Values

- Hex: `#0f217b`
- RGB: rgb(15, 33, 123)
- HSL: hsl(230, 78%, 27%)
- OKLCH: oklch(0.309 0.152 266.8)
- Relative luminance: 0.0262
- Nearest named color: midnightblue (#191970, Δ 2.725) — https://brandsweets.com/colors/midnightblue
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/0f217b

## Tints & shades

- Tints (toward white): #132a9a, #1732ba, #1b3bda, #3351e6, #5770ea, #778bee, #97a6f2, #b6c1f6, #d6dcfa, #f6f7fe
- Shades (toward black): #0e1f71, #0c1b64, #0b185b, #0a1652, #091449, #07103b, #060d32, #050b29, #03071b, #020512

## Harmonies

- Complementary: #7b690f
- Analogous: #0f577b, #330f7b
- Triadic: #7b0f21, #217b0f
- Split-complementary: #7b330f, #577b0f
- Tetradic: #7b0f57, #7b690f, #0f7b33

## Colors that go with #0f217b

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

- **Steel Blue** #4682b4 [harmony, pool: analogous] — Steel Blue is #0f217b'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), Glacier (https://brandsweets.com/palettes/cool#glacier), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust), Plaid (https://brandsweets.com/colors/brands/plaid-com). — https://brandsweets.com/colors/steelblue
- **Charcoal** #36454f [role, pool] — Charcoal is the text near-black for #0f217b: softer than #000 and cool enough to feel like part of the same palette. Seen in: Boeing (https://brandsweets.com/colors/brands/boeing-com), CeraVe (https://brandsweets.com/colors/brands/cerave-com), dbt Labs (https://brandsweets.com/colors/brands/getdbt-com). — https://brandsweets.com/colors/charcoal
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #0f217b: 4 real palettes, including Purina Pro Plan's brand system and Tide's brand system, as the accent. Seen in: Purina Pro Plan (https://brandsweets.com/colors/brands/chewy-com), Tide (https://brandsweets.com/colors/brands/tide-com), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), MLB (https://brandsweets.com/colors/brands/mlb-com). — https://brandsweets.com/colors/cobalt
- **Crimson** #dc143c [pool] — Crimson is paired with #0f217b in 5 real palettes, including Nintendo's brand system and Casper Sleep's brand system, as the supporting colour. Seen in: Nintendo (https://brandsweets.com/colors/brands/nintendo-com), Casper Sleep (https://brandsweets.com/colors/brands/casper-com), Pepsi (https://brandsweets.com/colors/brands/pepsi-com), Marvel (https://brandsweets.com/colors/brands/marvel-com). — https://brandsweets.com/colors/crimson
- **Denim** #1560bd [pool] — Designers have shipped Denim with #0f217b: 11 real palettes, including Bank of America's brand system and Panasonic's brand system, as the accent. Seen in: Bank of America (https://brandsweets.com/colors/brands/bankofamerica-com), Panasonic (https://brandsweets.com/colors/brands/panasonic-com), Hasbro (https://brandsweets.com/colors/brands/hasbro-com), Skechers (https://brandsweets.com/colors/brands/skechers-com). — https://brandsweets.com/colors/denim
- **Royal Blue** #4169e1 [pool] — Royal Blue is paired with #0f217b in 7 real palettes, including Discord's brand system and Confluent's brand system, as the lead colour. Seen in: Discord (https://brandsweets.com/colors/brands/discord), Confluent (https://brandsweets.com/colors/brands/confluent-io), Nivea (https://brandsweets.com/colors/brands/nivea-com), Nokia (https://brandsweets.com/colors/brands/nokia-com). — https://brandsweets.com/colors/royalblue
- **Olive Green** #808000 [harmony: complementary] — Olive Green sits directly opposite #0f217b 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/olive
- **Blue** #0000ff [pool] — 3 real palettes, including Alaska Airlines's brand system and Procter & Gamble's brand system put Blue beside #0f217b, as the accent. Seen in: Alaska Airlines (https://brandsweets.com/colors/brands/alaskaair-com), Procter & Gamble (https://brandsweets.com/colors/brands/pg-com), Monzo (https://brandsweets.com/colors/brands/monzo-com). — https://brandsweets.com/colors/blue

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

- On white (#ffffff): 13.78:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.52:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #536cea (4.7:1); AA: background → #949494 (4.54:1); AAA: text → #7b8fef (7.02:1); AAA: background → #bababa (7.1:1)

## Brands using this color

- **Purina Pro Plan** — secondary #09267b (Δ 1.078) — https://brandsweets.com/colors/brands/chewy-com
- **Discord** — secondary #1a2081 (Δ 1.571) — https://brandsweets.com/colors/brands/discord
- **Visa** — primary #1a1e73 (Δ 1.895) — https://brandsweets.com/colors/brands/visa-com
- **Visa** — secondary #1a1f72 (Δ 1.985) — https://brandsweets.com/colors/brands/visa-com

## 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/0f217b-9c9ec4-df814e-231f2d-e9eef1?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: "#0f217b" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.