Color

#253cef

#253cef
hex#253cef
rgbrgb(37, 60, 239)
hslhsl(233, 86%, 54%)
oklchoklch(0.485 0.261 267.3)
Closest name: C64 Blue (#003aff)Relative luminance 0.0986

Tints & shades

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

Harmonies

Complementary

Open in tool →

#efd725

#25a1ef · #7225ef

#ef253c · #3cef25

Split-complementary

Open in tool →

#ef7225 · #a1ef25

#ef25a1 · #efd725 · #25ef72

Contrast

#253cef as textRatioAAAA largeAAAFix
Aaon white
7.07:1passpasspassPasses AAA — no fix needed.
Aaon black
2.97:1failfailfail
  • AA: use #5467f2 as the text (4.6:1)
  • AAA: use #7f8df5 as the text (7.03:1)
  • AA: or shift the background to #cfcfcf (4.54:1)
  • AAA: or shift the background to #ffffff (7.07:1)

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

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

mcpConnect your agent — build around #253cef
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #253cef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/253cef-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