Color
#40237b
#40237brgb(64, 35, 123)hsl(260, 56%, 31%)oklch(0.349 0.14 292.8)Colors that go with #40237b
Charcoal, Royal Blue 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 #40237b: softer than #000 and cool enough to feel like part of the same palette.
Royal Blue #4169e1
analogousshippedRoyal Blue is #40237b's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped6 real palettes, including Pepsi's brand system and Alaska Airlines's brand system put Blue beside #40237b, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #40237b in 4 real palettes, including Casper Sleep's brand system and Marvel's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #40237b: 8 real palettes, including Bank of America's brand system and Hasbro's brand system, as the accent.
Powder Blue #b0e0e6
shippedDesigners have shipped Powder Blue with #40237b: 4 real palettes, including Glacier and Frost & Ember, as the supporting colour.
Steel Blue #4682b4
shippedDesigners have shipped Steel Blue with #40237b: 6 real palettes, including Hershey's's brand system and Fintech Trust, as the accent.
Taupe #483c32
shippedTaupe is paired with #40237b in 4 real palettes, including Gillette's brand system and American Eagle's brand system, as the lead colour.
Real palettes that use #40237b
Tints & shades
Harmonies
Contrast
| #40237b as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 12.04:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.74:1 | 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 #40237b 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
#40237b 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 #40237b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/40237b-ae9cc4-dfc94e-2a1f2d-e9ebf1?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