Brand color

Substack Secondary

#0083d5

hex#0083d5

rgbrgb(0, 131, 213)

hslhsl(203, 100%, 42%)

oklchoklch(0.593 0.156 247)

From Substack brand colorsRelative luminance 0.2104

Cool Vivid Technical Modern

Open in palette tool Check contrast

Substack Secondary 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 1 public brand that uses it and the palettes it appears in.

Tints & shades

Tints — toward white

0097f5 0fa3ff 2eafff 47b9ff 66c4ff 85d0ff 9edaff bde6ff d6efff f5fbff

Shades — toward black

0078c2 006bad 00619e 00558a 004875 003c61 002f4d 00263d 001929 000d14

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

Harmonies

Complementary

Open in tool →

0083d5 d65200

#d65200

Analogous

Open in tool →

0083d5 00d6bd 0019d6

#00d6bd · #0019d6

Triadic

Open in tool →

0083d5 d60084 84d600

#d60084 · #84d600

Split-complementary

Open in tool →

0083d5 d60019 d6bd00

#d60019 · #d6bd00

Tetradic

Open in tool →

0083d5 bd00d6 d65200 19d600

#bd00d6 · #d65200 · #19d600

Contrast

Substack Secondary as text	Ratio	AA	AA large	AAA	Fix
Aaon white	4.03:1	fail	pass	fail	AA: use #007bc7 as the text (4.51:1) AAA: use #005b94 as the text (7.18:1) AA: or shift the background to #141414 (4.57:1)
Aaon black	5.21:1	pass	pass	fail	AAA: use #009afa as the text (7:1)

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

Brands using this color

Substacksecondary · #0083d5

Fonts for this mood

Substack Secondary reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

Technical fonts →Modern fonts →

mcpConnect your agent — build around Substack Secondary

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 #0083d5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0083d5-9cb0c4-df4e5d-1f222d-e9f1f0?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