Color

#150cc6

#150cc6
hex#150cc6
rgbrgb(21, 12, 198)
hslhsl(243, 89%, 41%)
oklchoklch(0.384 0.252 266.8)
Closest name: mediumblue (#0000cd)Relative luminance 0.045

Colors that go with #150cc6

Charcoal, Cornflower Blue and Crimson 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 →

#bcc60c

#0c5fc6 · #720cc6

#c6150c · #0cc615

Split-complementary

Open in tool →

#c6720c · #5fc60c

#c60c5f · #bcc60c · #0cc672

Contrast

#150cc6 as textRatioAAAA largeAAAFix
Aaon white
11.05:1passpasspassPasses AAA — no fix needed.
Aaon black
1.9:1failfailfail
  • AA: use #6760f6 as the text (4.58:1)
  • AAA: use #918bf8 as the text (7.25:1)
  • AA: or shift the background to #a6a6a6 (4.54:1)
  • AAA: or shift the background to #cfcfcf (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #150cc6 as the background.

Brands using this color

Fonts for this mood

#150cc6 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #150cc6
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 #150cc6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/150cc6-a39cc4-dfa04e-261f2d-e9edf1?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