Color

#688df3

#688df3
hex#688df3
rgbrgb(104, 141, 243)
hslhsl(224, 85%, 68%)
oklchoklch(0.664 0.157 267.1)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.2846

Colors that go with #688df3

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 →

#f3ce68

#68d2f3 · #8868f3

#f3688d · #8df368

Split-complementary

Open in tool →

#f38868 · #d2f368

#f368d2 · #f3ce68 · #68f388

Contrast

#688df3 as textRatioAAAA largeAAAFix
Aaon white
3.14:1failpassfail
  • AA: use #3e6def as the text (4.53:1)
  • AAA: use #1247d9 as the text (7.17:1)
  • AA: or shift the background to #2b2b2b (4.51:1)
Aaon black
6.69:1passpassfail
  • AAA: use #7194f4 as the text (7.24:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #688df3 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

#688df3 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #688df3
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 #688df3 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/688df3-9ca2c4-df724e-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