Color

#5b8cb3

#5b8cb3
hex#5b8cb3
rgbrgb(91, 140, 179)
hslhsl(207, 37%, 53%)
oklchoklch(0.621 0.08 243.6)
Closest name: steelblue (#4682b4)Relative luminance 0.2423

Colors that go with #5b8cb3

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 →

#b3835b

#5bb3af · #5b5fb3

#b35b8c · #8cb35b

Split-complementary

Open in tool →

#b35b5f · #b3af5b

#af5bb3 · #b3835b · #5fb35b

Contrast

#5b8cb3 as textRatioAAAA largeAAAFix
Aaon white
3.59:1failpassfail
  • AA: use #4a7aa1 as the text (4.58:1)
  • AAA: use #375a77 as the text (7.26:1)
  • AA: or shift the background to #1f1f1f (4.59:1)
Aaon black
5.85:1passpassfail
  • AAA: use #709abd as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5b8cb3 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

#5b8cb3 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5b8cb3
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 #5b8cb3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5b8cb3-9cadc4-df4e53-1f212d-e9f1f1?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