Color

#03217d

#03217d
hex#03217d
rgbrgb(3, 33, 125)
hslhsl(225, 95%, 25%)
oklchoklch(0.308 0.157 263.9)
Closest name: midnightblue (#191970)Relative luminance 0.0259

Tints & shades

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

Harmonies

Complementary

Open in tool →

#7c5e03

#035e7c · #21037c

#7c0321 · #217c03

Split-complementary

Open in tool →

#7c2103 · #5e7c03

#7c035e · #7c5e03 · #037c21

Contrast

#03217d as textRatioAAAA largeAAAFix
Aaon white
13.84:1passpasspassPasses AAA — no fix needed.
Aaon black
1.52:1failfailfail
  • AA: use #3869fa as the text (4.57:1)
  • AAA: use #6f92fb as the text (7.18:1)
  • AA: or shift the background to #949494 (4.56:1)
  • AAA: or shift the background to #bababa (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 #03217d 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

#03217d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03217d
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 #03217d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03217d-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