Color

#0f17ae

#0f17ae
hex#0f17ae
rgbrgb(15, 23, 174)
hslhsl(237, 84%, 37%)
oklchoklch(0.358 0.222 266.4)
Closest name: Dark Galaxy (#0018a8)Relative luminance 0.0377

Colors that go with #0f17ae

Charcoal, Crimson and Steel Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#aea60f

#0f66ae · #560fae

#ae0f17 · #17ae0f

Split-complementary

Open in tool →

#ae560f · #66ae0f

#ae0f66 · #aea60f · #0fae56

Contrast

#0f17ae as textRatioAAAA largeAAAFix
Aaon white
11.97:1passpasspassPasses AAA — no fix needed.
Aaon black
1.75:1failfailfail
  • AA: use #5f67f1 as the text (4.7:1)
  • AAA: use #8a8ff5 as the text (7.33:1)
  • AA: or shift the background to #a1a1a1 (4.63:1)
  • AAA: or shift the background to #c7c7c7 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f17ae as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#0f17ae reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f17ae
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0f17ae and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f17ae-9f9cc4-df924e-251f2d-e9edf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md