Color

#03218c

#03218c
hex#03218c
rgbrgb(3, 33, 140)
hslhsl(227, 96%, 28%)
oklchoklch(0.325 0.176 264.2)
Closest name: Deepsea Kraken (#082599)Relative luminance 0.03

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8c6e03

#03658c · #2a038c

#8c0321 · #218c03

Split-complementary

Open in tool →

#8c2a03 · #658c03

#8c0365 · #8c6e03 · #038c2a

Contrast

#03218c as textRatioAAAA largeAAAFix
Aaon white
13.12:1passpasspassPasses AAA — no fix needed.
Aaon black
1.6:1failfailfail
  • AA: use #4169fb as the text (4.64:1)
  • AAA: use #7391fc as the text (7.18:1)
  • AA: or shift the background to #999999 (4.61:1)
  • AAA: or shift the background to #bfbfbf (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03218c as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#03218c reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03218c
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 #03218c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03218c-9ca0c4-df7a4e-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