Color

#03089b

#03089b
hex#03089b
rgbrgb(3, 8, 155)
hslhsl(238, 96%, 31%)
oklchoklch(0.318 0.212 264.7)
Closest name: Everlasting Night (#000099)Relative luminance 0.0256

Tints & shades

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

Harmonies

Complementary

Open in tool →

#9b9603

#03549b · #4a039b

#9b0308 · #089b03

Split-complementary

Open in tool →

#9b4a03 · #549b03

#9b0354 · #9b9603 · #039b4a

Contrast

#03089b as textRatioAAAA largeAAAFix
Aaon white
13.89:1passpasspassPasses AAA — no fix needed.
Aaon black
1.51:1failfailfail
  • AA: use #5f64fc as the text (4.72:1)
  • AAA: use #878bfd as the text (7.14:1)
  • AA: or shift the background to #949494 (4.58:1)
  • AAA: or shift the background to #b8b8b8 (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 #03089b 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

#03089b reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03089b
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 #03089b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03089b-9f9cc4-df944e-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