Cyan3
cyan3 · #00CDCD
HEX
#00CDCD
RGB
rgb(0, 205, 205)
CMYK
cmyk(100%, 0%, 0%, 20%)
HSL
hsl(180, 100%, 40%)
LAB
lab(74.9, -40.8, -12.0)
What is Cyan3?
Cyan3 is the cyan3 reference in the X11 named colors. Its sRGB value is #00CDCD (rgb 0, 205, 205). It sits in the cyan family. Historical X Window System color names — the numbered 1-4 lightness variants of the classic xorg-server rgb.txt palette. See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Cyan3 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Cyan3
An 11-step tonal scale derived from Cyan3 (#00CDCD). Click any swatch to copy its HEX. Use these as a starting point for design tokens, hover states, and disabled states in a design system.
50
#EBFBFB
#EBFBFB
100
#D6F7F7
#D6F7F7
200
#ADEFEF
#ADEFEF
300
#80E6E6
#80E6E6
400
#40DADA
#40DADA
500
#00CDCD
#00CDCD
600
#00AEAE
#00AEAE
700
#008585
#008585
800
#005C5C
#005C5C
900
#003333
#003333
950
#001919
#001919
Lighter tints (mixed with white)
15%
#6CD6D6
30%
#95DEDE
45%
#B3E5E5
60%
#CBEDED
75%
#E1F4F4
Darker shades (mixed with black)
15%
#00BFBF
30%
#00AFAF
45%
#009D9D
60%
#008787
75%
#006D6D
Color harmonies for Cyan3
Classic color-theory harmonies derived from rotating the hue of Cyan3. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#00CDCD
#00CDCD
#CC0000
#CC0000
Triadic
Three colors 120° apart
#00CDCD
#00CDCD
#CC00CC
#CC00CC
#CCCC00
#CCCC00
Analogous
Two neighbors ±30° on the wheel
#00CC66
#00CC66
#00CDCD
#00CDCD
#0066CC
#0066CC
Split-complementary
Base + two colors flanking its complement
#00CDCD
#00CDCD
#CC0066
#CC0066
#CC6600
#CC6600
Tetradic
Two complementary pairs
#00CDCD
#00CDCD
#0000CC
#0000CC
#CC0000
#CC0000
#CCCC00
#CCCC00
Square
Four colors evenly spaced 90° apart
#00CDCD
#00CDCD
#6600CC
#6600CC
#CC0000
#CC0000
#66CC00
#66CC00
Cyan3 in every color space
Full conversion of Cyan3 across the color spaces designers and developers actually use — including OKLCH (the perceptually-uniform space that powers Tailwind v4 and CSS Color Module Level 4) and HWB.
HEX
#00CDCD
RGB
rgb(0, 205, 205)
CMYK
cmyk(100%, 0%, 0%, 20%)
HSL
hsl(180, 100%, 40%)
HSV
hsv(180, 100%, 80%)
HWB
hwb(180 0% 20%)
CIE Lab
lab(74.9 -40.8 -12.0)
OKLCH
oklch(76.8% 0.131 194.8)
XYZ (D65)
xyz(32.85, 48.07, 65.29)
Copy-ready code for Cyan3
Drop-in snippets for CSS, Tailwind, Sass, iOS Swift, and Android XML. Click the copy button on any snippet to put it on your clipboard.
CSS
color: #00CDCD;
background-color: #00CDCD;CSS variable
:root {
--color-cyan3: #00CDCD;
}Tailwind config
// tailwind.config.js
colors: {
'cyan3': '#00CDCD',
}Sass
$color-cyan3: #00CDCD;Swift UIColor
UIColor(red: 0.000, green: 0.804, blue: 0.804, alpha: 1.0)Android XML
<color name="cyan3">#00CDCD</color>Closest match in every color system
The nearest Cyan3 equivalent in every other color system on this site, ranked by ΔE2000 perceptual distance. Useful when translating between design-system, web-standard, and industrial color references.
Closest in X11 named colors
Top 6 ΔE2000-closest entries within the same collection.
Closest Pantone matches
Top 6 ΔE2000-closest Pantone references. Cross-system matching is approximate — see disclaimer.
Closest RAL Classic matches
Top 6 ΔE2000-closest RAL Classic references for industrial coating cross-reference.
RAL 6027
#84C3BE
Light green
RAL 5024
#5D9B9B
Pastel blue
RAL 5018
#3F888F
Turquoise blue
RAL 7038
#B5B8B1
Agate grey
RAL 7001
#8F999F
Silver grey
RAL 6019
#BDECB6
Pastel green
FAQ about Cyan3
What is the HEX code for Cyan3?
Cyan3 (cyan3) has the HEX code #00CDCD. In RGB it is rgb(0, 205, 205), and in CMYK it is cmyk(100%, 0%, 0%, 20%).
What is the OKLCH value of Cyan3?
Cyan3 converts to oklch(0.768 0.131 194.8). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Cyan3 accessible for body text?
Used as a background, Cyan3 has a contrast ratio of 10.61:1 with black text and 1.98:1 with white text. WCAG 2.1 AA requires 4.5:1 for normal text. The current recommendation is to use black text and verify in real UI context.
What is the closest Pantone to Cyan3?
The closest Pantone reference to Cyan3 by ΔE2000 perceptual distance is Pantone 1837 C (#0ABAB5). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Cyan3?
The closest RAL Classic reference to Cyan3 by ΔE2000 distance is RAL 6027 (Light green, #84C3BE). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Cyan3?
The complementary color (180° opposite on the HSL color wheel) of Cyan3 is #CC0000. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
X11 named colors (xorg rgb.txt)
The historical X11 color name list shipped in the xorg-server rgb.txt file. Roughly 550 entries covering classic computing color names like 'PapayaWhip', 'MediumAquamarine', and 'DarkSlateGray'. Many CSS named colors originate here. Use as a reference for legacy and creative color names. Most modern CSS implementations accept these names directly.
- Source type
- derived
- Confidence
- high
- License
- MIT/X11 license (X Consortium)
- Last reviewed
- 2026-05-24
Workflow tags
X11 colors are sRGB digital values from a 1980s color system. For print, convert to a process-appropriate color and proof against substrate.