Color

#4253a9

#4253a9
hex#4253a9
rgbrgb(66, 83, 169)
hslhsl(230, 44%, 46%)
oklchoklch(0.475 0.139 271.7)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1021

Colors that go with #4253a9

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 →

#a99842

#4287a9 · #6442a9

#a94253 · #53a942

Split-complementary

Open in tool →

#a96442 · #87a942

#a94287 · #a99842 · #42a964

Contrast

#4253a9 as textRatioAAAA largeAAAFix
Aaon white
6.9:1passpassfail
  • AAA: use #4051a5 as the text (7.15:1)
Aaon black
3.04:1failpassfail
  • AA: use #6171c2 as the text (4.65:1)
  • AAA: use #8692d0 as the text (7.04:1)
  • AA: or shift the background to #d1d1d1 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #4253a9 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

#4253a9 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #4253a9
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 #4253a9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/4253a9-9c9ec4-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