Color
#543bba
#543bbargb(84, 59, 186)hsl(252, 52%, 48%)oklch(0.46 0.189 285.3)Colors that go with #543bba
Charcoal, Sea Green and Steel Blue 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 #543bba: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
split-complementshippedSea Green is a split-complement of #543bba: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Steel Blue #4682b4
analogousshippedSteel Blue is #543bba'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 #543bba in 4 real palettes, including Warner Bros.'s brand system and Walmart's brand system, as the accent.
Blue #0000ff
shipped5 real palettes, including Zillow's brand system and Pixar's brand system put Blue beside #543bba, as the lead colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #543bba: 6 real palettes, including Blue Mono and Coca-Cola's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #543bba in 10 real palettes, including Wells Fargo's brand system and Walgreens's brand system, as the lead colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #543bba: 5 real palettes, including Datadog's brand system and MLB's brand system, as the accent.
Real palettes that use #543bba
Tints & shades
Harmonies
Contrast
| #543bba as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 7.74:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.71:1 | 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 #543bba 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
#543bba reads as cool, modern. The font library is tagged with the same vocabulary:
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 #543bba and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/543bba-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