Campus
Open in tool →Institutional blue with a highlighter-amber accent — trustworthy for parents, lively enough for students.
Color
#282939
#282939
hex
#282939rgb
rgb(40, 41, 57)hsl
hsl(236, 18%, 19%)oklch
oklch(0.287 0.029 281.6)Closest name: Haiti (#2c2a35)Relative luminance 0.0233
Colors that go with #282939
Amber, Blue and Blue Violet 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.
Amber #ffbf00
shippedAmber is paired with #282939 in 18 real palettes, including Beach Hut and McDonald's's brand system, as the supporting colour.
Blue #0000ff
shipped23 real palettes, including Sketch's brand system and Readymag's brand system put Blue beside #282939, as the accent.
Blue Violet #8a2be2
shippedBlue Violet is paired with #282939 in 5 real palettes, including ClickUp's brand system and Yahoo's brand system, as the lead colour.
Blush Pink #e8b4b8
shipped7 real palettes, including Blush and Rain Garden put Blush Pink beside #282939, as the supporting colour.
Brown #a52a2a
shipped4 real palettes, including Typewriter and Woodsmoke put Brown beside #282939, as the accent.
Burlywood #deb887
shippedBurlywood is paired with #282939 in 5 real palettes, including Coastal and Polaroid, as the accent.
Cadet Blue #5f9ea0
shippedDesigners have shipped Cadet Blue with #282939: 10 real palettes, including Coastal and Open House, as the lead colour.
White Smoke #f5f5f5
neutralWhite Smoke is the near-white surface #282939 was made for — maximum legibility with no colour cast to argue with.
Real palettes that use #282939
Tints & shades
Harmonies
Contrast
| #282939 as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 14.32:1 | pass | pass | pass | Passes AAA — no fix needed. |
Aaon black | 1.47:1 | 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 #282939 as the background.
Brands using this color
Palettes built around it
Fonts for this mood
#282939 reads as cool, muted, dark. The font library is tagged with the same vocabulary:
mcpConnect your agent — build around #282939
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 #282939 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
tool url
/palettes/new/282939-9e9cc4-df8f4e-241f2d-e9eef1?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