Color

#3081bb

#3081bb
hex#3081bb
rgbrgb(48, 129, 187)
hslhsl(205, 59%, 46%)
oklchoklch(0.581 0.118 243.8)
Closest name: steelblue (#4682b4)Relative luminance 0.1992

Colors that go with #3081bb

Charcoal, Copper and Amber 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 →

#bb6a30

#30bbaf · #303cbb

#bb3081 · #81bb30

Split-complementary

Open in tool →

#bb303c · #bbaf30

#af30bb · #bb6a30 · #3cbb30

Contrast

#3081bb as textRatioAAAA largeAAAFix
Aaon white
4.21:1failpassfail
  • AA: use #2e7bb2 as the text (4.57:1)
  • AAA: use #235c86 as the text (7.13:1)
  • AA: or shift the background to #0f0f0f (4.55:1)
Aaon black
4.98:1passpassfail
  • AAA: use #519cd2 as the text (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3081bb 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

#3081bb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #3081bb
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 #3081bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3081bb-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