Color

#3170dd

#3170dd
hex#3170dd
rgbrgb(49, 112, 221)
hslhsl(218, 72%, 53%)
oklchoklch(0.565 0.179 260.6)
Closest name: royalblue (#4169e1)Relative luminance 0.1746

Tints & shades

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

Harmonies

Complementary

Open in tool →

#dd9e31

#31c6dd · #4831dd

#dd3170 · #70dd31

Split-complementary

Open in tool →

#dd4831 · #c6dd31

#dd31c6 · #dd9e31 · #31dd48

Contrast

#3170dd as textRatioAAAA largeAAAFix
Aaon white
4.67:1passpassfail
  • AAA: use #1d54b4 as the text (7.05:1)
Aaon black
4.49:1failpassfail
  • AA: use #3573de as the text (4.66:1)
  • AAA: use #6a98e7 as the text (7.26:1)
  • AA: or shift the background to #fcfcfc (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3170dd 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

#3170dd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3170dd
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 #3170dd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3170dd-9ca6c4-df644e-201f2d-e9f0f1?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