Color
#51558a
#51558argb(81, 85, 138)hsl(236, 26%, 43%)oklch(0.47 0.085 279.3)Colors that go with #51558a
Charcoal, Steel Blue and Amber 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.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for #51558a: softer than #000 and cool enough to feel like part of the same palette.
Steel Blue #4682b4
analogousshippedSteel Blue is #51558a's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Amber #ffbf00
shippedAmber is paired with #51558a in 4 real palettes, including Warner Bros.'s brand system and McDonald's's brand system, as the accent.
Blue #0000ff
shipped6 real palettes, including Tesco's brand system and CVS's brand system put Blue beside #51558a, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #51558a: 5 real palettes, including Fintech Trust and Unilever's brand system, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #51558a in 14 real palettes, including Wells Fargo's brand system and Walgreens's brand system, as the lead colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #51558a: 7 real palettes, including Campbell's's brand system and AT&T's brand system, as the supporting colour.
Goldenrod #daa520
shippedGoldenrod shows up next to #51558a in 4 real palettes, including Open House and Sapphire & Gold, as the accent.
Real palettes that use #51558a
Tints & shades
Harmonies
Contrast
| #51558a as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 6.96:1 | pass | pass | fail |
|
Aaon black | 3.02:1 | fail | pass | fail |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51558a 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 #51558a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/51558a-9e9cc4-df8f4e-241f2d-e9eef1?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