Playground
Open in tool →Orange, blue and green — the colors of playground equipment; loud, cheerful, obviously for kids.
Color
#4088fc
#4088fc
hex
#4088fcrgb
rgb(64, 136, 252)hsl
hsl(217, 97%, 62%)oklch
oklch(0.641 0.188 259.6)Closest name: dodgerblue (#1e90ff)Relative luminance 0.2573
Colors that go with #4088fc
Medium Sea Green, Dark Goldenrod and Deep Sky 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.
Medium Sea Green #3cb371
triadicshippedMedium Sea Green completes a triad with #4088fc — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Dark Goldenrod #b8860b
complementaryDark Goldenrod sits directly opposite #4088fc on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Deep Sky Blue #00bfff
shippedDeep Sky Blue is paired with #4088fc in 3 real palettes, including Blueprint and Calm's brand system, as the lead colour — a combination designers have actually shipped, not a computed rotation.
Red #ff0000
triadicshippedRed completes a triad with #4088fc — three hues spaced evenly round the wheel, the classic way to get energy into a palette without a clash.
Chocolate #d2691e
split-complementChocolate is a split-complement of #4088fc: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Olive Drab #6b8e23
split-complementOlive Drab is a split-complement of #4088fc: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Amber #ffbf00
shippedAmber is paired with #4088fc in two real palettes: Heatwave and Blueprint, as the supporting colour — a combination designers have actually shipped, not a computed rotation.
Charcoal #36454f
neutralCharcoal is the text near-black for #4088fc: softer than #000 and cool enough to feel like part of the same palette.
Real palettes that use #4088fc
Tints & shades
Harmonies
Contrast
| #4088fc as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 3.42:1 | fail | pass | fail | |
Aaon black | 6.15:1 | 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 #4088fc 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
#4088fc reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #4088fc
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 #4088fc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/4088fc-9ca7c4-df624e-201f2d-e9f0f1?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