Color

#3498da

#3498da
hex#3498da
rgbrgb(52, 152, 218)
hslhsl(204, 69%, 53%)
oklchoklch(0.653 0.134 242.3)
Closest name: Blue Burst (#309cd0)Relative luminance 0.2825

Tints & shades

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

Harmonies

Complementary

Open in tool →

#da7734

#34dac9 · #3445da

#da3498 · #98da34

Split-complementary

Open in tool →

#da3445 · #dac934

#c934da · #da7734 · #45da34

Contrast

#3498da as textRatioAAAA largeAAAFix
Aaon white
3.16:1failpassfail
  • AA: use #217ab5 as the text (4.65:1)
  • AAA: use #195d8a as the text (7.06:1)
  • AA: or shift the background to #292929 (4.61:1)
Aaon black
6.65:1passpassfail
  • AAA: use #419edc as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3498da 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

#3498da reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3498da
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 #3498da and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3498da-9cafc4-df4e5a-1f222d-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