Color

#648cb4

#648cb4
hex#648cb4
rgbrgb(100, 140, 180)
hslhsl(210, 35%, 55%)
oklchoklch(0.626 0.075 249.1)
Closest name: Galactic Gossamer (#7f8cb8)Relative luminance 0.2476

Colors that go with #648cb4

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 →

#b48c64

#64b4b4 · #6464b4

#b4648c · #8cb464

Split-complementary

Open in tool →

#b46464 · #b4b464

#b464b4 · #b48c64 · #64b464

Contrast

#648cb4 as textRatioAAAA largeAAAFix
Aaon white
3.53:1failpassfail
  • AA: use #4e78a2 as the text (4.63:1)
  • AAA: use #3a5978 as the text (7.29:1)
  • AA: or shift the background to #212121 (4.56:1)
Aaon black
5.95:1passpassfail
  • AAA: use #7599bd as the text (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #648cb4 as the background.

Brands using this color

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

Palettes built around it

Fonts for this mood

#648cb4 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #648cb4
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 #648cb4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/648cb4-9cabc4-df514e-1f202d-e9f1f1?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