Color

#013acb

#013acb
hex#013acb
rgbrgb(1, 58, 203)
hslhsl(223, 99%, 40%)
oklchoklch(0.436 0.227 263.4)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0734

Colors that go with #013acb

Charcoal, Crimson and Steel Blue 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 →

#cb9201

#019fcb · #2d01cb

#cb013a · #3acb01

Split-complementary

Open in tool →

#cb2d01 · #9fcb01

#cb019f · #cb9201 · #01cb2d

Contrast

#013acb as textRatioAAAA largeAAAFix
Aaon white
8.51:1passpasspassPasses AAA — no fix needed.
Aaon black
2.47:1failfailfail
  • AA: use #2f6afe as the text (4.61:1)
  • AAA: use #6792fe as the text (7.12:1)
  • AA: or shift the background to #bdbdbd (4.53:1)
  • AAA: or shift the background to #ebebeb (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #013acb as the background.

Brands using this color

Fonts for this mood

#013acb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #013acb
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 #013acb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/013acb-9ca3c4-df704e-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