brandsweets

Color

#0901f9

#0901f9
hex#0901f9
rgbrgb(9, 1, 249)
hslhsl(242, 99%, 49%)
oklchoklch(0.446 0.306 264.7)
Closest name: blue (#0000ff)Relative luminance 0.0692
CoolVividTechnicalModern
Open in palette toolCheck contrastWhat goes with it ↓

Colors that go with #0901f9

Charcoal, Crimson and Cobalt Blue 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.

Real palettes that use #0901f9

Glossier· brandGap· brandUnity· brandActivision· brand

Tints & shades

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

Harmonies

Complementary

Open in tool →
0901f9f0f901

#f0f901

Analogous

Open in tool →
0901f90175f98501f9

#0175f9 · #8501f9

Triadic

Open in tool →
0901f9f9090101f909

#f90901 · #01f909

Split-complementary

Open in tool →
0901f9f9850175f901

#f98501 · #75f901

Tetradic

Open in tool →
0901f9f90175f0f90101f985

#f90175 · #f0f901 · #01f985

Contrast

#0901f9 as textRatioAAAA largeAAAFix
Aaon white
8.81:1passpasspassPasses AAA — no fix needed.
Aaon black
2.38:1failfailfail
  • AA: use #625dfe as the text (4.52:1)
  • AAA: use #8e8afe as the text (7.22:1)
  • AA: or shift the background to #bababa (4.54:1)
  • AAA: or shift the background to #e6e6e6 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0901f9 as the background.

Brands using this color

Fonts for this mood

#0901f9 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

Technical fonts →Modern fonts →
mcpConnect your agent — build around #0901f9
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 #0901f9 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0901f9-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