Color

#0357aa

#0357aa
hex#0357aa
rgbrgb(3, 87, 170)
hslhsl(210, 97%, 34%)
oklchoklch(0.463 0.15 255)
Closest name: Blue Chip (#1d5699)Relative luminance 0.0974

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ab5703

#03abab · #0303ab

#ab0357 · #57ab03

Split-complementary

Open in tool →

#ab0303 · #abab03

#ab03ab · #ab5703 · #03ab03

Contrast

#0357aa as textRatioAAAA largeAAAFix
Aaon white
7.12:1passpasspassPasses AAA — no fix needed.
Aaon black
2.95:1failfailfail
  • AA: use #0373e2 as the text (4.55:1)
  • AAA: use #3699fc as the text (7.12:1)
  • AA: or shift the background to #cfcfcf (4.57:1)
  • AAA: or shift the background to #ffffff (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0357aa as the background.

Brands using this color

Fonts for this mood

#0357aa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0357aa
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 #0357aa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0357aa-9cabc4-df514e-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