Color

#0037b8

#0037b8
hex#0037b8
rgbrgb(0, 55, 184)
hslhsl(222, 100%, 36%)
oklchoklch(0.411 0.208 263)
Closest name: Blue Hour (#0034ab)Relative luminance 0.0619

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b88100

#0093b8 · #2500b8

#b80037 · #37b800

Split-complementary

Open in tool →

#b82500 · #93b800

#b80093 · #b88100 · #00b825

Contrast

#0037b8 as textRatioAAAA largeAAAFix
Aaon white
9.38:1passpasspassPasses AAA — no fix needed.
Aaon black
2.24:1failfailfail
  • AA: use #2969ff as the text (4.56:1)
  • AAA: use #6694ff as the text (7.24:1)
  • AA: or shift the background to #b5b5b5 (4.57:1)
  • AAA: or shift the background to #e0e0e0 (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 #0037b8 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

#0037b8 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0037b8
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 #0037b8 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0037b8-9ca3c4-df6e4e-211f2d-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