Color

#0903bf

#0903bf
hex#0903bf
rgbrgb(9, 3, 191)
hslhsl(242, 97%, 38%)
oklchoklch(0.367 0.25 265.2)
Closest name: mediumblue (#0000cd)Relative luminance 0.0388

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b9bf03

#035bbf · #6703bf

#bf0903 · #03bf09

Split-complementary

Open in tool →

#bf6703 · #5bbf03

#bf035b · #b9bf03 · #03bf67

Contrast

#0903bf as textRatioAAAA largeAAAFix
Aaon white
11.82:1passpasspassPasses AAA — no fix needed.
Aaon black
1.78:1failfailfail
  • AA: use #645efd as the text (4.56:1)
  • AAA: use #8f8bfd as the text (7.28:1)
  • AA: or shift the background to #a1a1a1 (4.57:1)
  • AAA: or shift the background to #c9c9c9 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0903bf 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

#0903bf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0903bf
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

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

analyze #0903bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0903bf-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