Color

#153bf9

#153bf9
hex#153bf9
rgbrgb(21, 59, 249)
hslhsl(230, 95%, 53%)
oklchoklch(0.491 0.276 265.3)
Closest name: C64 Blue (#003aff)Relative luminance 0.1013

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#f9d315

#15adf9 · #6115f9

#f9153b · #3bf915

Split-complementary

Open in tool →

#f96115 · #adf915

#f915ad · #f9d315 · #15f961

Contrast

#153bf9 as textRatioAAAA largeAAAFix
Aaon white
6.94:1passpassfail
  • AAA: use #1037f9 as the text (7.15:1)
Aaon black
3.03:1failpassfail
  • AA: use #4765fa as the text (4.51:1)
  • AAA: use #798ffc as the text (7.15:1)
  • AA: or shift the background to #d1d1d1 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #153bf9 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

#153bf9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #153bf9
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #153bf9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/153bf9-9c9ec4-df814e-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