Color

#3b8dab

#3b8dab
hex#3b8dab
rgbrgb(59, 141, 171)
hslhsl(196, 49%, 45%)
oklchoklch(0.606 0.091 225.5)
Closest name: Blue Moon (#3992a8)Relative luminance 0.2292

Colors that go with #3b8dab

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ab593b

#3bab91 · #3b55ab

#ab3b8d · #8dab3b

Split-complementary

Open in tool →

#ab3b55 · #ab913b

#913bab · #ab593b · #55ab3b

Contrast

#3b8dab as textRatioAAAA largeAAAFix
Aaon white
3.76:1failpassfail
  • AA: use #347d98 as the text (4.63:1)
  • AAA: use #275e72 as the text (7.17:1)
  • AA: or shift the background to #1c1c1c (4.53:1)
Aaon black
5.58:1passpassfail
  • AAA: use #49a1c1 as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3b8dab 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

#3b8dab reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3b8dab
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 #3b8dab and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3b8dab-9cb5c4-df4e6e-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