Color

#255ad4

#255ad4
hex#255ad4
rgbrgb(37, 90, 212)
hslhsl(222, 70%, 49%)
oklchoklch(0.51 0.196 263.3)
Closest name: Denim (#1560bd)Relative luminance 0.1246

Colors that go with #255ad4

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 →

#d4a025

#25b1d4 · #4825d4

#d4255a · #5ad425

Split-complementary

Open in tool →

#d44825 · #b1d425

#d425b1 · #d4a025 · #25d448

Contrast

#255ad4 as textRatioAAAA largeAAAFix
Aaon white
6.01:1passpassfail
  • AAA: use #2251bf as the text (7.01:1)
Aaon black
3.49:1failpassfail
  • AA: use #406fdd as the text (4.54:1)
  • AAA: use #7093e6 as the text (7.01:1)
  • AA: or shift the background to #e0e0e0 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #255ad4 as the background.

Brands using this color

Fonts for this mood

#255ad4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #255ad4
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 #255ad4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/255ad4-9ca3c4-df6e4e-211f2d-e9eff1?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