Color

#0436cd

#0436cd
hex#0436cd
rgbrgb(4, 54, 205)
hslhsl(225, 96%, 41%)
oklchoklch(0.432 0.233 263.9)
Closest name: Lapis on Neptune (#1f22d2)Relative luminance 0.0707

Colors that go with #0436cd

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 →

#cd9b04

#049bcd · #3604cd

#cd0436 · #36cd04

Split-complementary

Open in tool →

#cd3604 · #9bcd04

#cd049b · #cd9b04 · #04cd36

Contrast

#0436cd as textRatioAAAA largeAAAFix
Aaon white
8.7:1passpasspassPasses AAA — no fix needed.
Aaon black
2.41:1failfailfail
  • AA: use #3768fb as the text (4.54:1)
  • AAA: use #6e92fc as the text (7.18:1)
  • AA: or shift the background to #bdbdbd (4.63:1)
  • AAA: or shift the background to #e8e8e8 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0436cd as the background.

Brands using this color

Fonts for this mood

#0436cd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0436cd
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 #0436cd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0436cd-9ca1c4-df754e-221f2d-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