Color
#451d58
#451d58rgb(69, 29, 88)hsl(281, 50%, 23%)oklch(0.318 0.107 313.2)Colors that go with #451d58
Charcoal, Sea Green and 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 #451d58: softer than #000 and cool enough to feel like part of the same palette.
Sea Green #2e8b57
complementaryshippedSea Green sits directly opposite #451d58 on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Blue #0000ff
shipped7 real palettes, including Sketch's brand system and Tim Hortons's brand system put Blue beside #451d58, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #451d58: 5 real palettes, including SoFi's brand system and Open House, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #451d58: 4 real palettes, including Blue Mono and Purina Pro Plan's brand system, as the lead colour.
Copper #b87333
shippedDesigners have shipped Copper with #451d58: 4 real palettes, including Dusk and Bramble, as the accent.
Crimson #dc143c
shippedCrimson is paired with #451d58 in 10 real palettes, including Marvel's brand system and Casper Sleep's brand system, as the accent.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #451d58: 4 real palettes, including Kraken's brand system and Vimeo's brand system, as the accent.
Real palettes that use #451d58
Tints & shades
Harmonies
Contrast
| #451d58 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 13.38:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.57:1 | 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 #451d58 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
#451d58 reads as cool, dark, luxury. 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 #451d58 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/451d58-ba9fc1-b6cb62-2d1f2c-ebe9f1?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