Color

#1258ca

#1258ca
hex#1258ca
rgbrgb(18, 88, 202)
hslhsl(217, 84%, 43%)
oklchoklch(0.493 0.189 260.5)
Closest name: Denim (#1560bd)Relative luminance 0.1137

Colors that go with #1258ca

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 →

#ca8312

#12b4ca · #2712ca

#ca1258 · #58ca12

Split-complementary

Open in tool →

#ca2712 · #b4ca12

#ca12b4 · #ca8312 · #12ca27

Contrast

#1258ca as textRatioAAAA largeAAAFix
Aaon white
6.41:1passpassfail
  • AAA: use #1052bc as the text (7.11:1)
Aaon black
3.27:1failpassfail
  • AA: use #2270ec as the text (4.6:1)
  • AAA: use #5f97f1 as the text (7.18:1)
  • AA: or shift the background to #d9d9d9 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #1258ca as the background.

Brands using this color

Fonts for this mood

#1258ca reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1258ca
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 #1258ca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1258ca-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