Color

#030ba5

#030ba5
hex#030ba5
rgbrgb(3, 11, 165)
hslhsl(237, 96%, 33%)
oklchoklch(0.334 0.221 264.7)
Closest name: Cobalt (#030aa7)Relative luminance 0.0298

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a59d03

#035ca5 · #4c03a5

#a5030b · #0ba503

Split-complementary

Open in tool →

#a54c03 · #5ca503

#a5035c · #a59d03 · #03a54c

Contrast

#030ba5 as textRatioAAAA largeAAAFix
Aaon white
13.17:1passpasspassPasses AAA — no fix needed.
Aaon black
1.6:1failfailfail
  • AA: use #5a62fc as the text (4.59:1)
  • AAA: use #878dfd as the text (7.26:1)
  • AA: or shift the background to #999999 (4.62:1)
  • AAA: or shift the background to #bdbdbd (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 #030ba5 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

#030ba5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #030ba5
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 #030ba5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/030ba5-9f9cc4-df924e-251f2d-e9edf1?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