Color

#2b91da

#2b91da
hex#2b91da
rgbrgb(43, 145, 218)
hslhsl(205, 70%, 51%)
oklchoklch(0.634 0.142 245)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2583

Tints & shades

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

Harmonies

Complementary

Open in tool →

#da732b

#2bdacb · #2b39da

#da2b91 · #91da2b

Split-complementary

Open in tool →

#da2b39 · #dacb2b

#cb2bda · #da732b · #39da2b

Contrast

#2b91da as textRatioAAAA largeAAAFix
Aaon white
3.41:1failpassfail
  • AA: use #217aba as the text (4.61:1)
  • AAA: use #185b8b as the text (7.22:1)
  • AA: or shift the background to #242424 (4.56:1)
Aaon black
6.17:1passpassfail
  • AAA: use #409cdd as the text (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 #2b91da 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

#2b91da reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2b91da
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 #2b91da and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2b91da-9cafc4-df4e58-1f212d-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