html-color.org
HTML Color Codes - RGB, HSL, CMYK, CSS, Hex, Websafe colors
Last scanned Jul 27, 2026, 3:43 PM
Overall score
Great
Summary
Color information about any web color: html code, css, conversions (RGB,HSL,HSV,HSB,CMY,CMYK,Hex,hexadecimal,css,websafe,XYZ,CIE-L,binary,decimal), shades, tints, tones color harmonies (complementary, analogous, split, t… This website uses Google Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Meta description longer than 160 characters.
Color information about any web color: html code, css, conversions (RGB,HSL,HSV,HSB,CMY,CMYK,Hex,hexadecimal,css,websafe,XYZ,CIE-L,binary,decimal), shades, tints, tones color harmonies (complementary, analogous, split, triadic, tetradic, monochromatic), and color blindness simulator (monochromacy, dichromacy, trichromacy).
- United States
- Hosted on Cloudflare
Top issues to fix
9 issues found · 2 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
Meta description longer than 160 characters
SEOTrim the meta description to under 160 characters to avoid truncation in search results.
Missing canonical link
SEOAdd <link rel="canonical"> so search engines know which URL variant to index.
+3 more issues — details in the sections below.
SEO
5 issue(s) found
Performance
215 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Color information about any web color: html code, css, conversions (RGB,HSL,HSV,HSB,CMY,CMYK,Hex,hexadecimal,css,websafe,XYZ,CIE-L,binary,decimal), shades, tints, tones color harmonies (complementary, analogous, split, triadic, tetradic, monochromatic), and color blindness simulator (monochromacy, dichromacy, trichromacy).
Meta tags
- Title
- HTML Color Codes - RGB, HSL, CMYK, CSS, Hex, Websafe colors
- Description
- Color information about any web color: html code, css, conversions (RGB,HSL,HSV,HSB,CMY,CMYK,Hex,hexadecimal,css,websafe,XYZ,CIE-L,binary,decimal), shades, tints, tones color harmonies (complementary, analogous, split, triadic, tetradic, monochromatic), and color blindness simulator (monochromacy, dichromacy, trichromacy).
- Canonical
- Language
- en-US
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1, maximum-scale=1
- Robots meta
- index,follow
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 172.67.173.24
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- html-color.org
- Valid from
- Jun 13, 2026
- Valid to
- Sep 11, 2026
- Days until expiry
- 45
- SAN domains
- html-color.org, *.html-color.org
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 0 · H3 0
Links
77 internal · 0 external · 0 broken
Images
1 total · 0 missing alt
Scripts / Styles
11 scripts · 4 stylesheets
JS / CSS size
231 KB · 44.7 KB
Page size
66.2 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Meta description longer than 160 characters
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://html-color.org
- Final URL
- https://html-color.org
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 214 ms
- HTML size
- 66.2 KB
- Redirect chain
- https://html-color.org
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does html-color.org use?
- html-color.org is built with jQuery, Google Analytics, Cloudflare Analytics, Google Ads.
- Is html-color.org secure (HTTPS)?
- Yes. html-color.org uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Sep 11, 2026.
- Who hosts html-color.org?
- html-color.org is hosted on Cloudflare, behind Cloudflare CDN.
- What is html-color.org's SEO score?
- html-color.org scored 70/100 for SEO in the latest analysis (fair).
- What is html-color.org's overall website score?
- html-color.org has an overall SiteGraph score of 82/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card