Color

#378dae

#378dae
hex#378dae
rgbrgb(55, 141, 174)
hslhsl(197, 52%, 45%)
oklchoklch(0.606 0.095 227.1)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2292

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ae5937

#37ae95 · #3751ae

#ae378d · #8dae37

Split-complementary

Open in tool →

#ae3751 · #ae9537

#9537ae · #ae5937 · #51ae37

Contrast

#378dae as textRatioAAAA largeAAAFix
Aaon white
3.76:1failpassfail
  • AA: use #317d9b as the text (4.63:1)
  • AAA: use #255e74 as the text (7.16:1)
  • AA: or shift the background to #1c1c1c (4.53:1)
Aaon black
5.58:1passpassfail
  • AAA: use #45a0c4 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 #378dae as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#378dae reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #378dae
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 #378dae and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/378dae-9cb4c4-df4e6b-1f232d-e9f1ef?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