Color

#5888bb

#5888bb
hex#5888bb
rgbrgb(88, 136, 187)
hslhsl(211, 42%, 54%)
oklchoklch(0.614 0.094 251)
Closest name: steelblue (#4682b4)Relative luminance 0.2327

Colors that go with #5888bb

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 →

#bb8b58

#58b9bb · #5a58bb

#bb5888 · #88bb58

Split-complementary

Open in tool →

#bb5a58 · #b9bb58

#bb58b9 · #bb8b58 · #58bb5a

Contrast

#5888bb as textRatioAAAA largeAAAFix
Aaon white
3.71:1failpassfail
  • AA: use #4779ae as the text (4.55:1)
  • AAA: use #355b82 as the text (7.07:1)
  • AA: or shift the background to #1c1c1c (4.59:1)
Aaon black
5.65:1passpassfail
  • AAA: use #729ac5 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 #5888bb 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

#5888bb reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5888bb
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 #5888bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5888bb-9cabc4-df534e-1f202d-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