Color

#5d81bb

#5d81bb
hex#5d81bb
rgbrgb(93, 129, 187)
hslhsl(217, 41%, 55%)
oklchoklch(0.601 0.098 259.6)
Closest name: steelblue (#4682b4)Relative luminance 0.2162

Colors that go with #5d81bb

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 →

#bb975d

#5db0bb · #685dbb

#bb5d81 · #81bb5d

Split-complementary

Open in tool →

#bb685d · #b0bb5d

#bb5db0 · #bb975d · #5dbb68

Contrast

#5d81bb as textRatioAAAA largeAAAFix
Aaon white
3.95:1failpassfail
  • AA: use #4f76b5 as the text (4.57:1)
  • AAA: use #395889 as the text (7.16:1)
  • AA: or shift the background to #171717 (4.54:1)
Aaon black
5.32:1passpassfail
  • AAA: use #7a98c7 as the text (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5d81bb 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

#5d81bb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5d81bb
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 #5d81bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5d81bb-9ca7c4-df624e-201f2d-e9f0f1?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