Color

#003afa

#003afa
hex#003afa
rgbrgb(0, 58, 250)
hslhsl(226, 100%, 49%)
oklchoklch(0.488 0.28 264)
Closest name: C64 Blue (#003aff)Relative luminance 0.0993

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fac000

#00b7fa · #4300fa

#fa003a · #3afa00

Split-complementary

Open in tool →

#fa4300 · #b7fa00

#fa00b7 · #fac000 · #00fa43

Contrast

#003afa as textRatioAAAA largeAAAFix
Aaon white
7.03:1passpasspassPasses AAA — no fix needed.
Aaon black
2.99:1failfailfail
  • AA: use #3867ff as the text (4.55:1)
  • AAA: use #7092ff as the text (7.24:1)
  • AA: or shift the background to #cfcfcf (4.51:1)
  • AAA: or shift the background to #ffffff (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #003afa 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

#003afa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #003afa
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 #003afa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/003afa-9ca1c4-df774e-221f2d-e9eff1?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