Color

#5189d2

#5189d2
hex#5189d2
rgbrgb(81, 137, 210)
hslhsl(214, 59%, 57%)
oklchoklch(0.625 0.126 255.7)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2429

Colors that go with #5189d2

Charcoal, Copper 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 →

#d29a51

#51c9d2 · #5951d2

#d25189 · #89d251

Split-complementary

Open in tool →

#d25951 · #c9d251

#d251c9 · #d29a51 · #51d259

Contrast

#5189d2 as textRatioAAAA largeAAAFix
Aaon white
3.58:1failpassfail
  • AA: use #3475cb as the text (4.61:1)
  • AAA: use #28599a as the text (7.03:1)
  • AA: or shift the background to #1f1f1f (4.6:1)
Aaon black
5.86:1passpassfail
  • AAA: use #6999d8 as the text (7.15:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5189d2 as the background.

Brands using this color

Fonts for this mood

#5189d2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5189d2
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 #5189d2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5189d2-9ca9c4-df5a4e-1f1f2d-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