Color

#3a8ea1

#3a8ea1
hex#3a8ea1
rgbrgb(58, 142, 161)
hslhsl(191, 47%, 43%)
oklchoklch(0.603 0.085 215.2)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2282

Colors that go with #3a8ea1

Charcoal, Copper and Crimson lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #3a8ea1

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a14d3a

#3aa181 · #3a5ba1

#a13a8e · #8ea13a

Split-complementary

Open in tool →

#a13a5b · #a1813a

#813aa1 · #a14d3a · #5ba13a

Contrast

#3a8ea1 as textRatioAAAA largeAAAFix
Aaon white
3.77:1failpassfail
  • AA: use #337e8e as the text (4.65:1)
  • AAA: use #27606d as the text (7.05:1)
  • AA: or shift the background to #1c1c1c (4.52:1)
Aaon black
5.56:1passpassfail
  • AAA: use #42a2b8 as the text (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3a8ea1 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

#3a8ea1 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3a8ea1
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #3a8ea1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3a8ea1-a2b6be-df4e7a-1f252d-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