Color

#0f03bf

#0f03bf
hex#0f03bf
rgbrgb(15, 3, 191)
hslhsl(244, 97%, 38%)
oklchoklch(0.369 0.249 266)
Closest name: mediumblue (#0000cd)Relative luminance 0.0393

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b2bf03

#0354bf · #6d03bf

#bf0f03 · #03bf0f

Split-complementary

Open in tool →

#bf6d03 · #54bf03

#bf0354 · #b2bf03 · #03bf6d

Contrast

#0f03bf as textRatioAAAA largeAAAFix
Aaon white
11.76:1passpasspassPasses AAA — no fix needed.
Aaon black
1.79:1failfailfail
  • AA: use #695efd as the text (4.62:1)
  • AAA: use #938bfd as the text (7.35:1)
  • AA: or shift the background to #a1a1a1 (4.55:1)
  • AAA: or shift the background to #c9c9c9 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f03bf 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

#0f03bf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f03bf
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 #0f03bf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f03bf-a39cc4-dfa24e-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