Color

#0f0aa3

#0f0aa3
hex#0f0aa3
rgbrgb(15, 10, 163)
hslhsl(242, 88%, 34%)
oklchoklch(0.334 0.217 266.8)
Closest name: Dark Galaxy (#0018a8)Relative luminance 0.0296

Colors that go with #0f0aa3

Crimson, Steel Blue and Cobalt 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 →

#9ea30a

#0a52a3 · #5c0aa3

#a30f0a · #0aa30f

Split-complementary

Open in tool →

#a35c0a · #52a30a

#a30a52 · #9ea30a · #0aa35c

Contrast

#0f0aa3 as textRatioAAAA largeAAAFix
Aaon white
13.19:1passpasspassPasses AAA — no fix needed.
Aaon black
1.59:1failfailfail
  • AA: use #6661f5 as the text (4.59:1)
  • AAA: use #908cf8 as the text (7.29:1)
  • AA: or shift the background to #999999 (4.63:1)
  • AAA: or shift the background to #bdbdbd (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f0aa3 as the background.

Brands using this color

Fonts for this mood

#0f0aa3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f0aa3
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 #0f0aa3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f0aa3-a29cc4-df9e4e-261f2d-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