Color

#3091bb

#3091bb
hex#3091bb
rgbrgb(48, 145, 187)
hslhsl(198, 59%, 46%)
oklchoklch(0.619 0.108 231.2)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2447

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bb5a30

#30bb9f · #304cbb

#bb3091 · #91bb30

Split-complementary

Open in tool →

#bb304c · #bb9f30

#9f30bb · #bb5a30 · #4cbb30

Contrast

#3091bb as textRatioAAAA largeAAAFix
Aaon white
3.56:1failpassfail
  • AA: use #2a7ea2 as the text (4.56:1)
  • AAA: use #1f5f7a as the text (7.06:1)
  • AA: or shift the background to #212121 (4.52:1)
Aaon black
5.89:1passpassfail
  • AAA: use #38a0cc as the text (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3091bb 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

#3091bb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3091bb
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 #3091bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3091bb-9cb3c4-df4e69-1f232d-e9f1f0?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