Color

#4154b4

#4154b4
hex#4154b4
rgbrgb(65, 84, 180)
hslhsl(230, 47%, 48%)
oklchoklch(0.485 0.153 271.2)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1076

Colors that go with #4154b4

Charcoal, Sea Green 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 →

#b4a141

#418eb4 · #6741b4

#b44154 · #54b441

Split-complementary

Open in tool →

#b46741 · #8eb441

#b4418e · #b4a141 · #41b467

Contrast

#4154b4 as textRatioAAAA largeAAAFix
Aaon white
6.66:1passpassfail
  • AAA: use #3e51ac as the text (7.05:1)
Aaon black
3.15:1failpassfail
  • AA: use #5e6fc5 as the text (4.56:1)
  • AAA: use #8794d4 as the text (7.22:1)
  • AA: or shift the background to #d6d6d6 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4154b4 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

#4154b4 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4154b4
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 #4154b4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4154b4-9c9ec4-df814e-231f2d-e9eef1?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