Color

#178bde

#178bde
hex#178bde
rgbrgb(23, 139, 222)
hslhsl(205, 81%, 48%)
oklchoklch(0.619 0.157 247.2)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2392

Tints & shades

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

Harmonies

Complementary

Open in tool →

#de6a17

#17decd · #1728de

#de178b · #8bde17

Split-complementary

Open in tool →

#de1728 · #decd17

#cd17de · #de6a17 · #28de17

Contrast

#178bde as textRatioAAAA largeAAAFix
Aaon white
3.63:1failpassfail
  • AA: use #147ac2 as the text (4.57:1)
  • AAA: use #0f5a8f as the text (7.29:1)
  • AA: or shift the background to #1f1f1f (4.54:1)
Aaon black
5.78:1passpassfail
  • AAA: use #2f9ce9 as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #178bde 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

#178bde reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #178bde
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 #178bde and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/178bde-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