Color

#183baf

#183baf
hex#183baf
rgbrgb(24, 59, 175)
hslhsl(226, 76%, 39%)
oklchoklch(0.413 0.188 265.3)
Closest name: Blue Hour (#0034ab)Relative luminance 0.0642

Tints & shades

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

Harmonies

Complementary

Open in tool →

#af8c18

#1887af · #4018af

#af183b · #3baf18

Split-complementary

Open in tool →

#af4018 · #87af18

#af1887 · #af8c18 · #18af40

Contrast

#183baf as textRatioAAAA largeAAAFix
Aaon white
9.2:1passpasspassPasses AAA — no fix needed.
Aaon black
2.28:1failfailfail
  • AA: use #476ce6 as the text (4.56:1)
  • AAA: use #7893ed as the text (7.19:1)
  • AA: or shift the background to #b8b8b8 (4.64:1)
  • AAA: or shift the background to #e3e3e3 (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #183baf as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#183baf reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #183baf
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 #183baf and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/183baf-9ca1c4-df774e-221f2d-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