Color

#003fbd

#003fbd
hex#003fbd
rgbrgb(0, 63, 189)
hslhsl(220, 100%, 37%)
oklchoklch(0.43 0.205 262.4)
Closest name: Denim (#2243b6)Relative luminance 0.0723

Tints & shades

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

Harmonies

Complementary

Open in tool →

#bd7e00

#009dbd · #1f00bd

#bd003f · #3fbd00

Split-complementary

Open in tool →

#bd1f00 · #9dbd00

#bd009d · #bd7e00 · #00bd1f

Contrast

#003fbd as textRatioAAAA largeAAAFix
Aaon white
8.59:1passpasspassPasses AAA — no fix needed.
Aaon black
2.45:1failfailfail
  • AA: use #1f69ff as the text (4.52:1)
  • AAA: use #5c92ff as the text (7.01:1)
  • AA: or shift the background to #bdbdbd (4.57:1)
  • AAA: or shift the background to #e8e8e8 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #003fbd 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

#003fbd reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #003fbd
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 #003fbd and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/003fbd-9ca5c4-df694e-211f2d-e9f0f1?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