Color

#5182c8

#5182c8
hex#5182c8
rgbrgb(81, 130, 200)
hslhsl(215, 52%, 55%)
oklchoklch(0.604 0.12 257.4)
Closest name: steelblue (#4682b4)Relative luminance 0.2188

Colors that go with #5182c8

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 →

#c89651

#51bec8 · #5b51c8

#c85182 · #82c851

Split-complementary

Open in tool →

#c85b51 · #bec851

#c851be · #c89651 · #51c85b

Contrast

#5182c8 as textRatioAAAA largeAAAFix
Aaon white
3.91:1failpassfail
  • AA: use #4177c3 as the text (4.51:1)
  • AAA: use #2f5993 as the text (7.07:1)
  • AA: or shift the background to #171717 (4.59:1)
Aaon black
5.38:1passpassfail
  • AAA: use #7098d2 as the text (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5182c8 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

#5182c8 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5182c8
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 #5182c8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5182c8-9ca8c4-df5d4e-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