# #17004c

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

## Values

- Hex: `#17004c`
- RGB: rgb(23, 0, 76)
- HSL: hsl(258, 100%, 15%)
- OKLCH: oklch(0.208 0.123 283.6)
- Relative luminance: 0.007
- Nearest named color: Ravenclaw (#0a0555, Δ 3.204) — https://brandsweets.com/colors/ravenclaw
- Moods: cool, vivid, dark, technical, modern, luxury, bold
- Page: https://brandsweets.com/colors/17004c

## Tints & shades

- Tints (toward white): #230075, #3100a3, #3d00cc, #4900f5, #6524ff, #824dff, #9f75ff, #bb9eff, #dbccff, #f8f5ff
- Shades (toward black): #150047, #140042, #12003d, #110038, #0f0033, #0c0029, #0b0024, #09001f, #080019, #060014

## Harmonies

- Complementary: #364d00
- Analogous: #000f4d, #3d004d
- Triadic: #4d1700, #004d17
- Split-complementary: #4d3d00, #0f4d00
- Tetradic: #4d000f, #364d00, #004d3d

## Colors that go with #17004c

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 #17004c: softer than #000 and cool enough to feel like part of the same palette. Seen in: Volkswagen (https://brandsweets.com/colors/brands/vw-com), Microsoft (https://brandsweets.com/colors/brands/microsoft-com), Plaid (https://brandsweets.com/colors/brands/plaid-com), Asana (https://brandsweets.com/colors/brands/asana-com). — https://brandsweets.com/colors/charcoal
- **Royal Blue** #4169e1 [harmony, pool: analogous] — Royal Blue is #17004c's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces. Seen in: Penpot (https://brandsweets.com/colors/brands/penpot-app), Spectrum (https://brandsweets.com/colors/brands/spectrum-com), Cisco (https://brandsweets.com/colors/brands/cisco-com), Telehealth (https://brandsweets.com/palettes/modern#telehealth). — https://brandsweets.com/colors/royalblue
- **Sea Green** #2e8b57 [harmony, pool: triadic] — Sea Green completes a triad with #17004c — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash. Seen in: Paramount+ (https://brandsweets.com/colors/brands/paramountplus-com), Intel (https://brandsweets.com/colors/brands/intel-com), Asana (https://brandsweets.com/colors/brands/asana-com), Kia (https://brandsweets.com/colors/brands/kia-com). — https://brandsweets.com/colors/seagreen
- **Blue** #0000ff [pool] — 7 real palettes, including Penpot's brand system and League of Legends's brand system put Blue beside #17004c, as the supporting colour. Seen in: Penpot (https://brandsweets.com/colors/brands/penpot-app), League of Legends (https://brandsweets.com/colors/brands/leagueoflegends-com), Monzo (https://brandsweets.com/colors/brands/monzo-com), Warp (https://brandsweets.com/colors/brands/warp-dev). — https://brandsweets.com/colors/blue
- **Cadet Blue** #5f9ea0 [pool] — Designers have shipped Cadet Blue with #17004c: 7 real palettes, including SoFi's brand system and Arctic, as the supporting colour. Seen in: SoFi (https://brandsweets.com/colors/brands/sofi-com), Arctic (https://brandsweets.com/palettes/clean#arctic), Alpine (https://brandsweets.com/palettes/cool#alpine), Open House (https://brandsweets.com/palettes/clean#open-house). — https://brandsweets.com/colors/cadetblue
- **Cobalt Blue** #0047ab [pool] — Designers have shipped Cobalt Blue with #17004c: 8 real palettes, including Glacier and Air France's brand system, as the accent. Seen in: Glacier (https://brandsweets.com/palettes/cool#glacier), Air France (https://brandsweets.com/colors/brands/airfrance-com), MLB (https://brandsweets.com/colors/brands/mlb-com), Fintech Trust (https://brandsweets.com/palettes/cool#fintech-trust). — https://brandsweets.com/colors/cobalt
- **Cornflower Blue** #6495ed [pool] — Designers have shipped Cornflower Blue with #17004c: 4 real palettes, including Blueprint and Blue Mono, as the supporting colour. Seen in: Blueprint (https://brandsweets.com/palettes/technical#blueprint), Blue Mono (https://brandsweets.com/palettes/cool#blue-mono), Arctic (https://brandsweets.com/palettes/clean#arctic), Terminal (https://brandsweets.com/palettes/technical#terminal). — https://brandsweets.com/colors/cornflowerblue
- **Crimson** #dc143c [pool] — Crimson is paired with #17004c in 5 real palettes, including Gemstone and Chase's brand system, as the accent. Seen in: Gemstone (https://brandsweets.com/palettes/vivid#gemstone), Chase (https://brandsweets.com/colors/brands/chase-com), Formula 1 (https://brandsweets.com/colors/brands/formula1-com), Pinterest (https://brandsweets.com/colors/brands/pinterest-com). — https://brandsweets.com/colors/crimson

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

- On white (#ffffff): 18.41:1 — AA pass, AA-large pass, AAA pass
- On black (#000000): 1.14:1 — AA fail, AA-large fail, AAA fail. Fix: AA: text → #8652ff (4.66:1); AA: background → #808080 (4.66:1); AAA: text → #a680ff (7.15:1); AAA: background → #a1a1a1 (7.12:1)

## Brands using this color

- **Railway** — primary #13044c (Δ 1.056) — https://brandsweets.com/colors/brands/railway-app

## 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/17004c-ad9cc4-dfc44e-291f2d-e9ebf1?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: "#17004c" })`), `check_contrast` (with fixes), `generate_palette` (explore around locks), `suggest_palette` (mood/industry → curated-first), `list_palettes`.