Color

#212cfd

#212cfd
hex#212cfd
rgbrgb(33, 44, 253)
hslhsl(237, 98%, 56%)
oklchoklch(0.481 0.29 267)
Closest name: C64 Blue (#003aff)Relative luminance 0.0922

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#fdf221

#219afd · #8421fd

#fd212c · #2cfd21

Split-complementary

Open in tool →

#fd8421 · #9afd21

#fd219a · #fdf221 · #21fd84

Contrast

#212cfd as textRatioAAAA largeAAAFix
Aaon white
7.39:1passpasspassPasses AAA — no fix needed.
Aaon black
2.84:1failfailfail
  • AA: use #5861fd as the text (4.54:1)
  • AAA: use #868cfe as the text (7.2:1)
  • AA: or shift the background to #cccccc (4.6:1)
  • AAA: or shift the background to #fafafa (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #212cfd as the background.

Brands using this color

Fonts for this mood

#212cfd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #212cfd
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #212cfd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/212cfd-9f9cc4-df924e-251f2d-e9edf1?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