Color

#173fcf

#173fcf
hex#173fcf
rgbrgb(23, 63, 207)
hslhsl(227, 80%, 45%)
oklchoklch(0.452 0.224 265.1)
Closest name: Denim (#2243b6)Relative luminance 0.0824

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cfa717

#179bcf · #4b17cf

#cf173f · #3fcf17

Split-complementary

Open in tool →

#cf4b17 · #9bcf17

#cf179b · #cfa717 · #17cf4b

Contrast

#173fcf as textRatioAAAA largeAAAFix
Aaon white
7.93:1passpasspassPasses AAA — no fix needed.
Aaon black
2.65:1failfailfail
  • AA: use #476beb as the text (4.57:1)
  • AAA: use #7590f0 as the text (7:1)
  • AA: or shift the background to #c4c4c4 (4.55:1)
  • AAA: or shift the background to #f2f2f2 (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 #173fcf as the background.

Brands using this color

Fonts for this mood

#173fcf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #173fcf
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 #173fcf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/173fcf-9ca0c4-df7a4e-221f2d-e9eff1?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