Color

#5bbbe1

#5bbbe1
hex#5bbbe1
rgbrgb(91, 187, 225)
hslhsl(197, 69%, 62%)
oklchoklch(0.749 0.105 226.7)
Closest name: Blue Martini (#52b4d3)Relative luminance 0.432

Colors that go with #5bbbe1

Charcoal, Dark Salmon 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 →

#e1815b

#5be1c4 · #5b78e1

#e15bbb · #bbe15b

Split-complementary

Open in tool →

#e15b78 · #e1c45b

#c45be1 · #e1815b · #78e15b

Contrast

#5bbbe1 as textRatioAAAA largeAAAFix
Aaon white
2.18:1failfailfail
  • AA: use #1e7ea4 as the text (4.59:1)
  • AAA: use #165d79 as the text (7.3:1)
  • AA: or shift the background to #424242 (4.61:1)
  • AAA: or shift the background to #242424 (7.13:1)
Aaon black
9.64:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5bbbe1 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

#5bbbe1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5bbbe1
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 #5bbbe1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5bbbe1-9cb4c4-df4e6b-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