Color

#2578fe

#2578fe
hex#2578fe
rgbrgb(37, 120, 254)
hslhsl(217, 99%, 57%)
oklchoklch(0.602 0.215 260.1)
Closest name: Azure (#007fff)Relative luminance 0.2098

Colors that go with #2578fe

Charcoal, Crimson and Copper 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 →

#feab25

#25e5fe · #3e25fe

#fe2578 · #78fe25

Split-complementary

Open in tool →

#fe3e25 · #e5fe25

#fe25e5 · #feab25 · #25fe3e

Contrast

#2578fe as textRatioAAAA largeAAAFix
Aaon white
4.04:1failpassfail
  • AA: use #106bfe as the text (4.61:1)
  • AAA: use #014ecb as the text (7.11:1)
  • AA: or shift the background to #141414 (4.56:1)
Aaon black
5.2:1passpassfail
  • AAA: use #5294fe as the text (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #2578fe as the background.

Brands using this color

Fonts for this mood

#2578fe reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #2578fe
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 #2578fe and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/2578fe-9ca7c4-df624e-201f2d-e9f0f1?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