Retro Pop
Open in tool →Fifties-diner red and steel blue with a peach — nostalgic pop that still passes contrast.
Color
#537e9d
#537e9d
hex
#537e9drgb
rgb(83, 126, 157)hsl
hsl(205, 31%, 47%)oklch
oklch(0.574 0.068 240.8)Closest name: Beach View (#4f7694)Relative luminance 0.192
Colors that go with #537e9d
Charcoal, Copper 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 #537e9d: softer than #000 and cool enough to feel like part of the same palette.
Amber #ffbf00
shippedAmber is paired with #537e9d in 6 real palettes, including Beach Hut and Wired's brand system, as the supporting colour.
Cobalt Blue #0047ab
shippedDesigners have shipped Cobalt Blue with #537e9d: 6 real palettes, including Fintech Trust and Glacier, as the lead colour.
Crimson #dc143c
shippedCrimson is paired with #537e9d in 13 real palettes, including Retro Pop and Wendy's's brand system, as the lead colour.
Deep Sky Blue #00bfff
shippedDesigners have shipped Deep Sky Blue with #537e9d: 5 real palettes, including Deep Water and Astro's brand system, as the lead colour.
Denim #1560bd
shippedDesigners have shipped Denim with #537e9d: 13 real palettes, including Campus and Discover's brand system, as the lead colour.
Firebrick #b22222
shippedDesigners have shipped Firebrick with #537e9d: 5 real palettes, including Honda's brand system and Wendy's's brand system, as the supporting colour.
Tints & shades
Harmonies
Contrast
| #537e9d as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 4.34:1 | fail | pass | fail | |
Aaon black | 4.84:1 | pass | 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 #537e9d 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
mcpConnect your agent — build around #537e9d
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 #537e9d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/537e9d-9cafc4-df4e58-1f212d-e9f1f0?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