brandsweets

Color

#0307e2

#0307e2
hex#0307e2
rgbrgb(3, 7, 226)
hslhsl(239, 97%, 45%)
oklchoklch(0.416 0.284 264.4)
Closest name: Brutally Blue (#0022dd)Relative luminance 0.0566
CoolVividTechnicalModern
Open in palette toolCheck contrastWhat goes with it ↓

Colors that go with #0307e2

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 #0307e2

Activision· brandAlaska Airlines· brandBBC· brandBinance· brand

Tints & shades

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

Harmonies

Complementary

Open in tool →
0307e2e2de03

#e2de03

Analogous

Open in tool →
0307e20376e26f03e2

#0376e2 · #6f03e2

Triadic

Open in tool →
0307e2e2030707e203

#e20307 · #07e203

Split-complementary

Open in tool →
0307e2e26f0376e203

#e26f03 · #76e203

Tetradic

Open in tool →
0307e2e20376e2de0303e26f

#e20376 · #e2de03 · #03e26f

Contrast

#0307e2 as textRatioAAAA largeAAAFix
Aaon white
9.85:1passpasspassPasses AAA — no fix needed.
Aaon black
2.13:1failfailfail
  • AA: use #5e61fd as the text (4.6:1)
  • AAA: use #8b8dfd as the text (7.33:1)
  • AA: or shift the background to #b0b0b0 (4.54:1)
  • AAA: or shift the background to #dbdbdb (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0307e2 as the background.

Brands using this color

Fonts for this mood

#0307e2 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

Technical fonts →Modern fonts →
mcpConnect your agent — build around #0307e2
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 #0307e2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0307e2-a09cc4-df964e-251f2d-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