Color

#5d90ef

#5d90ef
hex#5d90ef
rgbrgb(93, 144, 239)
hslhsl(219, 82%, 65%)
oklchoklch(0.662 0.152 261.8)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.2851

Colors that go with #5d90ef

Charcoal, Tomato 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 →

#efbc5d

#5dd9ef · #735def

#ef5d90 · #90ef5d

Split-complementary

Open in tool →

#ef735d · #d9ef5d

#ef5dd9 · #efbc5d · #5def73

Contrast

#5d90ef as textRatioAAAA largeAAAFix
Aaon white
3.13:1failpassfail
  • AA: use #2e70ea as the text (4.54:1)
  • AAA: use #1351c3 as the text (7.02:1)
  • AA: or shift the background to #2b2b2b (4.52:1)
Aaon black
6.7:1passpassfail
  • AAA: use #6696f0 as the text (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5d90ef as the background.

Brands using this color

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

Fonts for this mood

#5d90ef reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5d90ef
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 #5d90ef and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5d90ef-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