Modified Source ↗
Helios (YC F26) is the world's highest-resolution picture of your body's biology and health, in a blood test you take at home to help you live longer.
Products
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No matching products or features.
Customer feedback
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Marketing & Ads
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New pages
Modified Source ↗
Founding Engineer ↗
Brand colors & fonts
Observed website styles · partial · Nov 12, 2026
background · inferred
Source ↗text · inferred
Source ↗background · inferred
Source ↗text · inferred
Source ↗border · inferred
Source ↗text · inferred
Source ↗background · inferred
Source ↗text · inferred
Source ↗text · inferred
Source ↗Karla
body · declared in stylesheet · 400, 500, 700
Fallback: system-ui, sans-serif
ashcroft
other · declared in stylesheet · 400, 500
Fallback: system-ui, sans-serif
Karla
other · declared in stylesheet · 400, 500, 700
Fallback: system-ui, sans-serif
Helvetica
other · declared in stylesheet · 700
Fallback: system-ui, sans-serif
Disclaimer: These samples are not verified official brand guidelines or a complete palette. Previews use system fonts; font licensing, reuse and redistribution rights are unverified. Font URLs are evidence only. Actual rendering and loaded fonts may differ; displayed font names may be simplified.
Collection details
CSS declarations only; browser rendering, cascade, active theme, loaded fonts and official brand guidelines have not been verified. Generated font aliases are normalized for display; exact declarations remain in cssFamily. Colors are semantic declaration samples converted to sRGB, not an exhaustive palette. Font asset URLs are evidence only; license and redistribution rights are unknown.