Color

#345ab2

#345ab2
hex#345ab2
rgbrgb(52, 90, 178)
hslhsl(222, 55%, 45%)
oklchoklch(0.489 0.147 264.1)
Closest name: Blasphemous Blue (#3356aa)Relative luminance 0.1126

Colors that go with #345ab2

Charcoal, Sea Green and Amber 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b28c34

#3499b2 · #4d34b2

#b2345a · #5ab234

Split-complementary

Open in tool →

#b24d34 · #99b234

#b23499 · #b28c34 · #34b24d

Contrast

#345ab2 as textRatioAAAA largeAAAFix
Aaon white
6.46:1passpassfail
  • AAA: use #3054a6 as the text (7.13:1)
Aaon black
3.25:1failpassfail
  • AA: use #4d73cb as the text (4.63:1)
  • AAA: use #7995d8 as the text (7.1:1)
  • AA: or shift the background to #d9d9d9 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #345ab2 as the background.

Brands using this color

Fonts for this mood

#345ab2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #345ab2
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 #345ab2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/345ab2-9ca3c4-df6e4e-211f2d-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