Color

#0a33a4

#0a33a4
hex#0a33a4
rgbrgb(10, 51, 164)
hslhsl(224, 89%, 34%)
oklchoklch(0.384 0.186 263.9)
Closest name: Blue Hour (#0034ab)Relative luminance 0.0511

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a47b0a

#0a80a4 · #2e0aa4

#a40a33 · #33a40a

Split-complementary

Open in tool →

#a42e0a · #80a40a

#a40a80 · #a47b0a · #0aa42e

Contrast

#0a33a4 as textRatioAAAA largeAAAFix
Aaon white
10.38:1passpasspassPasses AAA — no fix needed.
Aaon black
2.02:1failfailfail
  • AA: use #396bf3 as the text (4.57:1)
  • AAA: use #6e93f7 as the text (7.18:1)
  • AA: or shift the background to #ababab (4.52:1)
  • AAA: or shift the background to #d4d4d4 (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0a33a4 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

#0a33a4 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0a33a4
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 #0a33a4 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0a33a4-9ca2c4-df724e-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