Named color

Black Box

#0f282f

hex#0f282f

rgbrgb(15, 40, 47)

hslhsl(193, 52%, 12%)

oklchoklch(0.26 0.033 218.6)

Relative luminance 0.0182

Cool Dark Luxury Bold Modern

Open in palette tool Check contrast

Black Box on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the curated palettes it appears in and any public brand that adopts it.

Tints & shades

Tints — toward white

1a4551 236070 2f7d93 3898b2 51aec8 73bed3 92cddd b5dde8 d4ebf2 f7fbfd

Shades — toward black

0d242b 0c2127 0c2127 0b1e23 0a1a1f 09171b 071417 071417 061113 050d10

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

0f282f 2f160f

#2f160f

Analogous

Open in tool →

0f282f 0f2f25 0f182f

#0f2f25 · #0f182f

Triadic

Open in tool →

0f282f 2f0f28 282f0f

#2f0f28 · #282f0f

Split-complementary

Open in tool →

0f282f 2f0f18 2f250f

#2f0f18 · #2f250f

Tetradic

Open in tool →

0f282f 250f2f 2f160f 182f0f

#250f2f · #2f160f · #182f0f

Contrast

Black Box as text	Ratio	AA	AA large	AAA	Fix
Aaon white	15.39:1	pass	pass	pass	Passes AAA — no fix needed.
Aaon black	1.36:1	fail	fail	fail	AA: use #308197 as the text (4.71:1) AAA: use #3ca2be as the text (7.1:1) AA: or shift the background to #8c8c8c (4.58:1) AAA: or shift the background to #b0b0b0 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with Black Box as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

Black Box reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

Luxury fonts →Bold fonts →Modern fonts →

mcpConnect your agent — build around Black Box

live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp

claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp

try this prompt

›analyze #0f282f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f282f-a2b5be-df4e75-1f242d-e9f1ef?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md