Color

#1256c4

#1256c4
hex#1256c4
rgbrgb(18, 86, 196)
hslhsl(217, 83%, 42%)
oklchoklch(0.484 0.184 260.4)
Closest name: Denim (#1560bd)Relative luminance 0.1077

Colors that go with #1256c4

Charcoal, Crimson 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 →

#c48012

#12afc4 · #2712c4

#c41256 · #56c412

Split-complementary

Open in tool →

#c42712 · #afc412

#c412af · #c48012 · #12c427

Contrast

#1256c4 as textRatioAAAA largeAAAFix
Aaon white
6.66:1passpassfail
  • AAA: use #1152bb as the text (7.12:1)
Aaon black
3.15:1failpassfail
  • AA: use #2470eb as the text (4.59:1)
  • AAA: use #6098f0 as the text (7.25:1)
  • AA: or shift the background to #d6d6d6 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1256c4 as the background.

Brands using this color

Fonts for this mood

#1256c4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1256c4
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 #1256c4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1256c4-9ca7c4-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