Color

#0351aa

#0351aa
hex#0351aa
rgbrgb(3, 81, 170)
hslhsl(212, 97%, 34%)
oklchoklch(0.45 0.158 257.1)
Closest name: Blue Chip (#1d5699)Relative luminance 0.0881

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ab5c03

#03a5ab · #0803ab

#ab0351 · #51ab03

Split-complementary

Open in tool →

#ab0803 · #a5ab03

#ab03a5 · #ab5c03 · #03ab08

Contrast

#0351aa as textRatioAAAA largeAAAFix
Aaon white
7.61:1passpasspassPasses AAA — no fix needed.
Aaon black
2.76:1failfailfail
  • AA: use #0470ec as the text (4.53:1)
  • AAA: use #4098fc as the text (7.11:1)
  • AA: or shift the background to #c9c9c9 (4.59:1)
  • AAA: or shift the background to #f7f7f7 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0351aa as the background.

Brands using this color

Fonts for this mood

#0351aa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0351aa
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 #0351aa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0351aa-9caac4-df564e-1f202d-e9f1f1?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