Color

#45738c

#45738c
hex#45738c
rgbrgb(69, 115, 140)
hslhsl(201, 34%, 41%)
oklchoklch(0.533 0.064 233.5)
Closest name: Harbour Blue (#417491)Relative luminance 0.1542

Colors that go with #45738c

Charcoal, Royal Blue and Sienna lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #45738c

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8c5e45

#458c81 · #45508c

#8c4573 · #738c45

Split-complementary

Open in tool →

#8c4550 · #8c8145

#81458c · #8c5e45 · #508c45

Contrast

#45738c as textRatioAAAA largeAAAFix
Aaon white
5.14:1passpassfail
  • AAA: use #385d71 as the text (7.07:1)
Aaon black
4.08:1failpassfail
  • AA: use #4a7c96 as the text (4.61:1)
  • AAA: use #6c9db7 as the text (7.14:1)
  • AA: or shift the background to #f0f0f0 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #45738c as the background.

Brands using this color

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

mcpConnect your agent — build around #45738c
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #45738c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/45738c-9cb1c4-df4e62-1f222d-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