Color

#021dca

#021dca
hex#021dca
rgbrgb(2, 29, 202)
hslhsl(232, 98%, 40%)
oklchoklch(0.397 0.25 264.4)
Closest name: mediumblue (#0000cd)Relative luminance 0.0516

Colors that go with #021dca

Charcoal, Cornflower Blue and Crimson 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 →

#caaf02

#0281ca · #4b02ca

#ca021d · #1dca02

Split-complementary

Open in tool →

#ca4b02 · #81ca02

#ca0281 · #caaf02 · #02ca4b

Contrast

#021dca as textRatioAAAA largeAAAFix
Aaon white
10.34:1passpasspassPasses AAA — no fix needed.
Aaon black
2.03:1failfailfail
  • AA: use #4e66fd as the text (4.64:1)
  • AAA: use #7c8dfe as the text (7.1:1)
  • AA: or shift the background to #ababab (4.5:1)
  • AAA: or shift the background to #d6d6d6 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #021dca as the background.

Brands using this color

Fonts for this mood

#021dca reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #021dca
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 #021dca and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/021dca-9c9dc4-df864e-231f2d-e9eef1?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