Color

#5975d9

#5975d9
hex#5975d9
rgbrgb(89, 117, 217)
hslhsl(227, 63%, 60%)
oklchoklch(0.591 0.156 269.4)
Closest name: Blue Öyster Cult (#5577ee)Relative luminance 0.1986

Colors that go with #5975d9

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 →

#d9bd59

#59b5d9 · #7d59d9

#d95975 · #75d959

Split-complementary

Open in tool →

#d97d59 · #b5d959

#d959b5 · #d9bd59 · #59d97d

Contrast

#5975d9 as textRatioAAAA largeAAAFix
Aaon white
4.22:1failpassfail
  • AA: use #506ed7 as the text (4.61:1)
  • AAA: use #2c4dc3 as the text (7.1:1)
  • AA: or shift the background to #0f0f0f (4.54:1)
Aaon black
4.97:1passpassfail
  • AAA: use #7e94e2 as the text (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5975d9 as the background.

Brands using this color

Fonts for this mood

#5975d9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #5975d9
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 #5975d9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5975d9-9ca0c4-df7a4e-221f2d-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