Color Vision Labs

Free, science-based online color vision (color blindness) test. Screen for color blindness in about two minutes and get an estimate of your type (protan/deutan/tritan) and severity — no sign-up, no data stored.

colorvisionlabs.com · Added June 16, 2026 · Last analysed June 16, 2026 · via · 75% unique tagline

Own this Launch?

StackScope is a free public catalogue of indie launches. We find launches on Product Hunt, Hacker News and similar feeds, then crawl each site to detect its tech stack and score it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 16 June 2026; the live site may have changed since.

Color Vision Labs is largely in shape, with a thorough launch checklist and clean crawl signals. Visible gaps: no Strict-Transport-Security, incomplete legal pages, and no email security records.

Launched on Product Hunt on June 16, 2026. The site is hosted on Cloudflare in the United States, with a domain registered 1 week before launch. The crawl picked up 11 technologies on this site, covering analytics, CDN, CSS frameworks, and DNS providers. The stack includes Next.js, React, and Tailwind CSS.

For context, it's on one of the most common stacks we track, shared by 509 launches and more locked down than the typical Product Hunt launch.

If you own this site, refresh the snapshot and see the full fix list any time →

7.1

StackScope Score

Good

90/100 Launch Readiness

Launch ready

5/6 Security Headers

Strong

0/3 Legal

Missing

2/2 Web Standards

Complete

93/100 Performance

Fast

Vibe Score 5 · Few AI signals

Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (11)

Infrastructure

CDN	Cloudflare
DNS	Cloudflare DNS
Hosting	OpenNext
Protocol	HTTP/3

Build & Framework

CSS framework	Tailwind CSS
Framework	React
Meta-framework	Next.js (2)

Analytics & Marketing

Analytics	Cloudflare Web Analytics (2)
Analytics	Google Analytics (3)
SEO	Google Search Console (2)
Tag management	Google Tag Manager

Infrastructure

Network

CLOUDFLARENET - Cloudflare, Inc., US

AS13335 · US

DNS

Cloudflare DNS

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

SSL Certificate

Google Trust Services

Valid 7 Jun 2026 to 5 Sep 2026

Certificate as captured in this snapshot, not a live check.

Domain Age

11 days

Registered Jun 2026 · Cloudflare, Inc.

Email Security

✗

SPF Not published. Your domain can be spoofed in phishing emails.

DKIM Not detected at common selectors. Your provider may use a custom one.

✗

DMARC Not published. Receivers fall back to permissive defaults.

MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.

TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (0)

This site uses no client-side storage we could detect on page load.

Readiness Breakdown How?

✓ Custom title and meta description

⚠

Open Graph tags (title, image, description) (partial) missing og:image

✓ Twitter card meta tags

✓ Canonical URL declared

✓ Responsive viewport meta tag

✓ Favicon present

✓ Semantic HTML (nav, main, article)

⚠

Meta description is 210 characters (advisory) Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear.

Performance How?

616 ms Server response

27% Faster than peers

776 ms Largest contentful paint

0.01 Cumulative layout shift

383 KB Page weight

3 Third-party domains

0 Console errors

0 Failed requests

Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.

Vibe Score Breakdown How?

Signal	Points
AI writing signals	+5

This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.

AI Stance

Blocks AI crawlers

✗ llms.txt published

✗ 9 AI bots blocked in robots.txt

Content-Signal

✗ ai-train = no

✓ search = yes

? ai-input (not declared)

Link headers

? None advertised

Well-Known Files

✓ robots.txt

✓ sitemap.xml (27 URLs)

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

? Privacy Policy not detected

? Terms of Service not detected

? Consent manager not detected

Analytics detected; tracking fires without visitor opt-in.

Detection works best on English language sites.

Security Headers (5/6)

✓

Referrer-Policy

✓

X-Frame-Options

✓

Permissions-Policy experimental (check browser support)

✓

X-Content-Type-Options

✓

Content-Security-Policy ⚠ CSP violation detected: your policy is blocking 1 of your own resource

✗

Strict-Transport-Security

–

X-XSS-Protection deprecated (use Content-Security-Policy)

Build

✓ Code splitting

16 JS files

1 CSS files

3 Third-party domains

Brand Colours

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.