Color

#0383ba

#0383ba
hex#0383ba
rgbrgb(3, 131, 186)
hslhsl(198, 97%, 37%)
oklchoklch(0.578 0.126 237)
Closest name: Haddock’s Sweater (#277aba)Relative luminance 0.198

Tints & shades

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

Harmonies

Complementary

Open in tool →

#ba3a03

#03ba95 · #0327ba

#ba0383 · #83ba03

Split-complementary

Open in tool →

#ba0327 · #ba9503

#9503ba · #ba3a03 · #27ba03

Contrast

#0383ba as textRatioAAAA largeAAAFix
Aaon white
4.23:1failpassfail
  • AA: use #037cb0 as the text (4.65:1)
  • AAA: use #025c83 as the text (7.34:1)
  • AA: or shift the background to #0f0f0f (4.53:1)
Aaon black
4.96:1passpassfail
  • AAA: use #039fe2 as the text (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0383ba as the background.

Brands using this color

Fonts for this mood

#0383ba reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0383ba
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 #0383ba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0383ba-9cb3c4-df4e69-1f232d-e9f1f0?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