Color

#338ddb

#338ddb
hex#338ddb
rgbrgb(51, 141, 219)
hslhsl(208, 70%, 53%)
oklchoklch(0.628 0.145 248.7)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2487

Tints & shades

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

Harmonies

Complementary

Open in tool →

#db8233

#33dbd5 · #3339db

#db338d · #8ddb33

Split-complementary

Open in tool →

#db3339 · #dbd533

#d533db · #db8233 · #39db33

Contrast

#338ddb as textRatioAAAA largeAAAFix
Aaon white
3.52:1failpassfail
  • AA: use #2278c3 as the text (4.62:1)
  • AAA: use #1a5b93 as the text (7.09:1)
  • AA: or shift the background to #212121 (4.58:1)
Aaon black
5.97:1passpassfail
  • AAA: use #4d9be0 as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #338ddb 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

#338ddb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #338ddb
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 #338ddb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/338ddb-9cadc4-df4e51-1f212d-e9f1f1?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