Color

#03174f

#03174f
hex#03174f
rgbrgb(3, 23, 79)
hslhsl(224, 93%, 16%)
oklchoklch(0.235 0.106 263.6)
Closest name: Interstellar Blue (#001155)Relative luminance 0.012

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4f3b03

#033d4f · #15034f

#4f0317 · #174f03

Split-complementary

Open in tool →

#4f1503 · #3d4f03

#4f033d · #4f3b03 · #034f15

Contrast

#03174f as textRatioAAAA largeAAAFix
Aaon white
16.94:1passpasspassPasses AAA — no fix needed.
Aaon black
1.24:1failfailfail
  • AA: use #3569f8 as the text (4.53:1)
  • AAA: use #6b91fa as the text (7.06:1)
  • AA: or shift the background to #858585 (4.59:1)
  • AAA: or shift the background to #a8a8a8 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #03174f 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

#03174f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03174f
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 #03174f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03174f-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