Color

#178ea1

#178ea1
hex#178ea1
rgbrgb(23, 142, 161)
hslhsl(188, 75%, 36%)
oklchoklch(0.595 0.099 211.9)
Closest name: Blue Moon (#3992a8)Relative luminance 0.221

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a12917

#17a16e · #1749a1

#a1178e · #8ea117

Split-complementary

Open in tool →

#a11749 · #a16e17

#6e17a1 · #a12917 · #49a117

Contrast

#178ea1 as textRatioAAAA largeAAAFix
Aaon white
3.87:1failpassfail
  • AA: use #158293 as the text (4.52:1)
  • AAA: use #0f5f6b as the text (7.32:1)
  • AA: or shift the background to #171717 (4.63:1)
Aaon black
5.42:1passpassfail
  • AAA: use #1ba6bb as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #178ea1 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

#178ea1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #178ea1
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 #178ea1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/178ea1-a2b7be-df4e81-1f252d-e9f1ee?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