Color

#5aa3fc

#5aa3fc
hex#5aa3fc
rgbrgb(90, 163, 252)
hslhsl(213, 96%, 67%)
oklchoklch(0.708 0.15 254.6)
Closest name: Cerulean (#55aaee)Relative luminance 0.354

Colors that go with #5aa3fc

Charcoal, Amber and Blue 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 →

#fcb35a

#5af4fc · #625afc

#fc5aa3 · #a3fc5a

Split-complementary

Open in tool →

#fc625a · #f4fc5a

#fc5af4 · #fcb35a · #5afc62

Contrast

#5aa3fc as textRatioAAAA largeAAAFix
Aaon white
2.6:1failfailfail
  • AA: use #056ff0 as the text (4.63:1)
  • AAA: use #0453b4 as the text (7.24:1)
  • AA: or shift the background to #383838 (4.51:1)
  • AAA: or shift the background to #141414 (7.09:1)
Aaon black
8.08:1passpasspassPasses 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 #5aa3fc as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#5aa3fc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5aa3fc
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 #5aa3fc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5aa3fc-9ca9c4-df584e-1f202d-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