Blue Mono
Open in tool →One blue at four lightnesses — monochromatic in the colour-theory sense; the deep step is the text, the pale step the surface tint.
Color
#b3d9fa
#b3d9fa
hex
#b3d9fargb
rgb(179, 217, 250)hsl
hsl(208, 88%, 84%)oklch
oklch(0.869 0.061 244.8)Closest name: Broad Daylight (#bbddff)Relative luminance 0.6611
Colors that go with #b3d9fa
Charcoal, Goldenrod and Dark Orange 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 #b3d9fa: softer than #000 and cool enough to feel like part of the same palette.
Goldenrod #daa520
split-complementshippedGoldenrod is a split-complement of #b3d9fa: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Dark Orange #ff8c00
complementaryshippedDark Orange sits directly opposite #b3d9fa on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Amber #ffbf00
shippedAmber is paired with #b3d9fa in 4 real palettes, including Salesforce's brand system and Blueprint, as the accent.
Brown #a52a2a
shipped4 real palettes, including Velvet and Woodsmoke put Brown beside #b3d9fa, as the lead colour.
Burlywood #deb887
shippedBurlywood is paired with #b3d9fa in 5 real palettes, including Coastal and Velvet, as the accent.
Copper #b87333
shippedDesigners have shipped Copper with #b3d9fa: 5 real palettes, including Bramble and Dusk, as the supporting colour.
Cornflower Blue #6495ed
analogousshippedCornflower Blue is #b3d9fa's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Real palettes that use #b3d9fa
Tints & shades
Harmonies
Contrast
| #b3d9fa as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.48:1 | fail | fail | fail | |
Aaon black | 14.22:1 | 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 #b3d9fa as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#b3d9fa reads as cool, vivid, light. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #b3d9fa
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 #b3d9fa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/b3d9fa-9cadc4-df4e51-1f212d-e9f1f1?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