Color

#150fc7

#150fc7
hex#150fc7
rgbrgb(21, 15, 199)
hslhsl(242, 86%, 42%)
oklchoklch(0.387 0.252 266.8)
Closest name: mediumblue (#0000cd)Relative luminance 0.0462

Colors that go with #150fc7

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 →

#c1c70f

#0f65c7 · #710fc7

#c7150f · #0fc715

Split-complementary

Open in tool →

#c7710f · #65c70f

#c70f65 · #c1c70f · #0fc771

Contrast

#150fc7 as textRatioAAAA largeAAAFix
Aaon white
10.91:1passpasspassPasses AAA — no fix needed.
Aaon black
1.92:1failfailfail
  • AA: use #6762f3 as the text (4.62:1)
  • AAA: use #918df6 as the text (7.34:1)
  • AA: or shift the background to #a8a8a8 (4.59:1)
  • AAA: or shift the background to #cfcfcf (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #150fc7 as the background.

Brands using this color

Fonts for this mood

#150fc7 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #150fc7
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 #150fc7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/150fc7-a29cc4-df9e4e-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