Color

#618cfa

#618cfa
hex#618cfa
rgbrgb(97, 140, 250)
hslhsl(223, 94%, 68%)
oklchoklch(0.662 0.17 265.9)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.282

Colors that go with #618cfa

Midnight Blue, Orange Red and Taupe 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 →

#facf61

#61d9fa · #8261fa

#fa618c · #8cfa61

Split-complementary

Open in tool →

#fa8261 · #d9fa61

#fa61d9 · #facf61 · #61fa82

Contrast

#618cfa as textRatioAAAA largeAAAFix
Aaon white
3.16:1failpassfail
  • AA: use #346cf9 as the text (4.51:1)
  • AAA: use #0744df as the text (7.24:1)
  • AA: or shift the background to #292929 (4.6:1)
Aaon black
6.64:1passpassfail
  • AAA: use #6b93fa as the text (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #618cfa 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

#618cfa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #618cfa
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 #618cfa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/618cfa-9ca3c4-df704e-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