Color

#153ef4

#153ef4
hex#153ef4
rgbrgb(21, 62, 244)
hslhsl(229, 91%, 52%)
oklchoklch(0.489 0.268 265.2)
Closest name: C64 Blue (#003aff)Relative luminance 0.1014

Colors that go with #153ef4

Charcoal, Crimson 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 →

#f4cb15

#15adf4 · #5c15f4

#f4153e · #3ef415

Split-complementary

Open in tool →

#f45c15 · #adf415

#f415ad · #f4cb15 · #15f45c

Contrast

#153ef4 as textRatioAAAA largeAAAFix
Aaon white
6.94:1passpassfail
  • AAA: use #103af4 as the text (7.16:1)
Aaon black
3.03:1failpassfail
  • AA: use #4b6af7 as the text (4.7:1)
  • AAA: use #778ef9 as the text (7.02:1)
  • AA: or shift the background to #d1d1d1 (4.54:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #153ef4 as the background.

Brands using this color

Fonts for this mood

#153ef4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #153ef4
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 #153ef4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/153ef4-9c9fc4-df7e4e-231f2d-e9eef1?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