Color

#253ebb

#253ebb
hex#253ebb
rgbrgb(37, 62, 187)
hslhsl(230, 67%, 44%)
oklchoklch(0.435 0.197 267.8)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.0743

Colors that go with #253ebb

Medium Sea Green, Midnight Blue and Slate Gray 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 #253ebb

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bba225

#2589bb · #5725bb

#bb253e · #3ebb25

Split-complementary

Open in tool →

#bb5725 · #89bb25

#bb2589 · #bba225 · #25bb57

Contrast

#253ebb as textRatioAAAA largeAAAFix
Aaon white
8.45:1passpasspassPasses AAA — no fix needed.
Aaon black
2.49:1failfailfail
  • AA: use #556bdd as the text (4.53:1)
  • AAA: use #7f90e6 as the text (7.03:1)
  • AA: or shift the background to #bfbfbf (4.6:1)
  • AAA: or shift the background to #ebebeb (7.09:1)

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

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

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

tool url/palettes/new/253ebb-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