Color

#4183aa

#4183aa
hex#4183aa
rgbrgb(65, 131, 170)
hslhsl(202, 45%, 46%)
oklchoklch(0.583 0.09 237)
Closest name: steelblue (#4682b4)Relative luminance 0.2026

Colors that go with #4183aa

Charcoal, Copper and Royal 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.

Real palettes that use #4183aa

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#aa6741

#41aa9c · #414faa

#aa4183 · #83aa41

Split-complementary

Open in tool →

#aa414f · #aa9c41

#9c41aa · #aa6741 · #4faa41

Contrast

#4183aa as textRatioAAAA largeAAAFix
Aaon white
4.16:1failpassfail
  • AA: use #3c7b9f as the text (4.64:1)
  • AAA: use #2e5e7a as the text (7:1)
  • AA: or shift the background to #121212 (4.51:1)
Aaon black
5.05:1passpassfail
  • AAA: use #609fc3 as the text (7.24:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4183aa 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

#4183aa reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4183aa
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 #4183aa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4183aa-9cb1c4-df4e5f-1f222d-e9f1f0?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