Color

#0331a5

#0331a5
hex#0331a5
rgbrgb(3, 49, 165)
hslhsl(223, 96%, 33%)
oklchoklch(0.38 0.19 263.3)
Closest name: Blue Hour (#0034ab)Relative luminance 0.0493

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a57703

#0382a5 · #2603a5

#a50331 · #31a503

Split-complementary

Open in tool →

#a52603 · #82a503

#a50382 · #a57703 · #03a526

Contrast

#0331a5 as textRatioAAAA largeAAAFix
Aaon white
10.57:1passpasspassPasses AAA — no fix needed.
Aaon black
1.99:1failfailfail
  • AA: use #326bfb as the text (4.63:1)
  • AAA: use #6993fc as the text (7.18:1)
  • AA: or shift the background to #ababab (4.6:1)
  • AAA: or shift the background to #d4d4d4 (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 #0331a5 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

#0331a5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0331a5
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 #0331a5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0331a5-9ca3c4-df704e-211f2d-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