Color

#3498df

#3498df
hex#3498df
rgbrgb(52, 152, 223)
hslhsl(205, 73%, 54%)
oklchoklch(0.655 0.139 244.2)
Closest name: Blue Burst (#309cd0)Relative luminance 0.2851

Tints & shades

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

Harmonies

Complementary

Open in tool →

#df7b34

#34dfd1 · #3442df

#df3498 · #98df34

Split-complementary

Open in tool →

#df3442 · #dfd134

#d134df · #df7b34 · #42df34

Contrast

#3498df as textRatioAAAA largeAAAFix
Aaon white
3.13:1failpassfail
  • AA: use #1e7bbe as the text (4.53:1)
  • AAA: use #165c8d as the text (7.12:1)
  • AA: or shift the background to #2b2b2b (4.52:1)
Aaon black
6.7:1passpassfail
  • AAA: use #3d9ce1 as the text (7.04:1)

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

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

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

tool url/palettes/new/3498df-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