Arctic
Open in tool →Navy type on white with an ice-blue accent: crisp and corporate without going grey.
Color
#39a0ea
#39a0ea
hex
#39a0eargb
rgb(57, 160, 234)hsl
hsl(205, 81%, 57%)oklch
oklch(0.681 0.143 244.3)Closest name: Fresh Blue of Bel Air (#069af3)Relative luminance 0.3195
Colors that go with #39a0ea
Charcoal, Peru and Midnight 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 #39a0ea: softer than #000 and cool enough to feel like part of the same palette.
Peru #cd853f
complementaryshippedPeru sits directly opposite #39a0ea on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Midnight Blue #191970
shippedMidnight Blue is paired with #39a0ea in 4 real palettes, including Blue Mono and First Snow, as the text colour against it — a combination designers have actually shipped, not a computed rotation.
Orange Red #ff4500
shippedOrange Red is paired with #39a0ea in 5 real palettes, including Heatwave and Cursor's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Taupe #483c32
shippedTaupe is paired with #39a0ea in 6 real palettes, including Retool's brand system and Cursor's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Tomato #ff6347
split-complementshippedTomato is a split-complement of #39a0ea: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Amber #ffbf00
shippedAmber is paired with #39a0ea in 3 real palettes, including Heatwave and Blueprint, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Blue #0000ff
shippedBlue is paired with #39a0ea in 3 real palettes, including Readymag's brand system and Warp's brand system, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Real palettes that use #39a0ea
Tints & shades
Harmonies
Contrast
| #39a0ea as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 2.84:1 | fail | fail | fail | |
Aaon black | 7.39:1 | pass | pass | pass | Passes AAA — no fix needed. |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #39a0ea 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
#39a0ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #39a0ea
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 #39a0ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/39a0ea-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