Color

#1650bb

#1650bb
hex#1650bb
rgbrgb(22, 80, 187)
hslhsl(219, 79%, 41%)
oklchoklch(0.465 0.179 261.4)
Closest name: Cobalt Blue (#0047ab)Relative luminance 0.095

Colors that go with #1650bb

Charcoal, Crimson and Steel Blue 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 →

#bb8116

#16a2bb · #2f16bb

#bb1650 · #50bb16

Split-complementary

Open in tool →

#bb2f16 · #a2bb16

#bb16a2 · #bb8116 · #16bb2f

Contrast

#1650bb as textRatioAAAA largeAAAFix
Aaon white
7.24:1passpasspassPasses AAA — no fix needed.
Aaon black
2.9:1failfailfail
  • AA: use #3271e7 as the text (4.65:1)
  • AAA: use #6494ed as the text (7:1)
  • AA: or shift the background to #cccccc (4.51:1)
  • AAA: or shift the background to #fcfcfc (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 #1650bb as the background.

Brands using this color

Fonts for this mood

#1650bb reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1650bb
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 #1650bb and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1650bb-9ca5c4-df664e-211f2d-e9f0f1?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