Color

#033d9b

#033d9b
hex#033d9b
rgbrgb(3, 61, 155)
hslhsl(217, 96%, 31%)
oklchoklch(0.393 0.163 260.7)
Closest name: Blue Hour (#0034ab)Relative luminance 0.0572

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9b6103

#03899b · #15039b

#9b033d · #3d9b03

Split-complementary

Open in tool →

#9b1503 · #899b03

#9b0389 · #9b6103 · #039b15

Contrast

#033d9b as textRatioAAAA largeAAAFix
Aaon white
9.79:1passpasspassPasses AAA — no fix needed.
Aaon black
2.14:1failfailfail
  • AA: use #146cfa as the text (4.56:1)
  • AAA: use #5595fc as the text (7.09:1)
  • AA: or shift the background to #b0b0b0 (4.51:1)
  • AAA: or shift the background to #dbdbdb (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #033d9b as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#033d9b reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #033d9b
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 #033d9b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/033d9b-9ca7c4-df624e-201f2d-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