Sapphire & Gold
Open in tool →Deep sapphire and gold with a teal — old-money jewel tones on an ivory ground; heraldic without a crest.
Color
#243e84
#243e84
hex
#243e84rgb
rgb(36, 62, 132)hsl
hsl(224, 57%, 33%)oklch
oklch(0.386 0.122 265.6)Closest name: Evening Magic (#363e7d)Relative luminance 0.0549
Colors that go with #243e84
Charcoal, Steel 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 #243e84: softer than #000 and cool enough to feel like part of the same palette.
Steel Blue #4682b4
analogousshippedSteel Blue is #243e84's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Blue #0000ff
shipped5 real palettes, including CVS's brand system and Alaska Airlines's brand system put Blue beside #243e84, as the supporting colour.
Cornflower Blue #6495ed
shippedDesigners have shipped Cornflower Blue with #243e84: 4 real palettes, including Blue Mono and Blizzard's brand system, as the supporting colour.
Crimson #dc143c
shippedCrimson is paired with #243e84 in 12 real palettes, including Pepsi's brand system and Walgreens's brand system, as the supporting colour.
Denim #1560bd
shippedDesigners have shipped Denim with #243e84: 15 real palettes, including Unilever's brand system and Hasbro's brand system, as the accent.
Midnight Blue #191970
shipped16 real palettes, including Fintech Trust and Microsoft's brand system put Midnight Blue beside #243e84, as that palette's text colour.
Orange Red #ff4500
shippedOrange Red is paired with #243e84 in 5 real palettes, including NASA's brand system and Tide's brand system, as the supporting colour.
Real palettes that use #243e84
Tints & shades
Harmonies
Contrast
| #243e84 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 10.01:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 2.1:1 | 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 #243e84 as the background.
Brands using this color
No public brand in the corpus uses this exact color yet. Extract a brand to add one.
Palettes built around it
Fonts for this mood
#243e84 reads as cool, modern. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #243e84
live endpointPoint 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.
endpoint
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt
›analyze #243e84 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/243e84-9ca2c4-df724e-221f2d-e9eff1?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