Color

#253ce9

#253ce9
hex#253ce9
rgbrgb(37, 60, 233)
hslhsl(233, 82%, 53%)
oklchoklch(0.479 0.254 267.4)
Closest name: C64 Blue (#003aff)Relative luminance 0.0951

Colors that go with #253ce9

Charcoal, Crimson and Sea Green 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 →

#e9d225

#259ee9 · #7025e9

#e9253c · #3ce925

Split-complementary

Open in tool →

#e97025 · #9ee925

#e9259e · #e9d225 · #25e970

Contrast

#253ce9 as textRatioAAAA largeAAAFix
Aaon white
7.24:1passpasspassPasses AAA — no fix needed.
Aaon black
2.9:1failfailfail
  • AA: use #5869ee as the text (4.67:1)
  • AAA: use #828ff3 as the text (7.17:1)
  • AA: or shift the background to #cccccc (4.51:1)
  • AAA: or shift the background to #fcfcfc (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #253ce9 as the background.

Brands using this color

Fonts for this mood

#253ce9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #253ce9
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 #253ce9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/253ce9-9c9cc4-df884e-241f2d-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