Color
#51477b
#51477brgb(81, 71, 123)hsl(252, 27%, 38%)oklch(0.432 0.085 291.3)Colors that go with #51477b
Steel Blue, Blue and Crimson 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.
Steel Blue #4682b4
analogousshippedSteel Blue is #51477b's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped4 real palettes, including CVS's brand system and Alaska Airlines's brand system put Blue beside #51477b, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #51477b in 7 real palettes, including Codecademy's brand system and Amazon's brand system, as the accent.
Denim #1560bd
shippedDesigners have shipped Denim with #51477b: 11 real palettes, including HP's brand system and Hinge's brand system, as the accent.
Midnight Blue #191970
shipped9 real palettes, including First Snow and Microsoft's brand system put Midnight Blue beside #51477b, as that palette's text colour.
Powder Blue #b0e0e6
shippedDesigners have shipped Powder Blue with #51477b: 7 real palettes, including First Snow and Glacier, as the accent.
Sea Green #2e8b57
split-complementshippedSea Green is a split-complement of #51477b: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
White Smoke #f5f5f5
neutralWhite Smoke is the surface for #51477b: a clean near-white with no warm cast, so the cool hue stays clear instead of drifting muddy.
Real palettes that use #51477b
Tints & shades
Harmonies
Contrast
| #51477b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 8.28:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.54:1 | fail | fail | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51477b as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
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.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #51477b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/51477b-a99cc4-dfb64e-281f2d-e9ecf1?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md