Cyan
cyan · #00FFFF
HEX
#00FFFF
RGB
rgb(0, 255, 255)
CMYK
cmyk(100%, 0%, 0%, 0%)
HSL
hsl(180, 100%, 50%)
LAB
lab(91.1, -48.1, -14.1)
What is Cyan?
Cyan is the cyan reference in the CSS Named Colors. Its sRGB value is #00FFFF (rgb 0, 255, 255). It sits in the cyan family. The 147 named colors defined by the W3C CSS Color Module Level 4 specification — usable directly in CSS as keywords like 'crimson' or 'rebeccapurple'. See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Cyan as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Cyan
An 11-step tonal scale derived from Cyan (#00FFFF). 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
#EBFFFF
#EBFFFF
100
#D6FFFF
#D6FFFF
200
#ADFFFF
#ADFFFF
300
#80FFFF
#80FFFF
400
#40FFFF
#40FFFF
500
#00FFFF
#00FFFF
600
#00D9D9
#00D9D9
700
#00A6A6
#00A6A6
800
#007373
#007373
900
#004040
#004040
950
#001F1F
#001F1F
Lighter tints (mixed with white)
15%
#6CFFFF
30%
#95FFFF
45%
#B3FFFF
60%
#CBFFFF
75%
#E1FFFF
Darker shades (mixed with black)
15%
#00EDED
30%
#00DADA
45%
#00C4C4
60%
#00AAAA
75%
#008989
Color harmonies for Cyan
Classic color-theory harmonies derived from rotating the hue of Cyan. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#00FFFF
#00FFFF
#FF0000
#FF0000
Triadic
Three colors 120° apart
#00FFFF
#00FFFF
#FF00FF
#FF00FF
#FFFF00
#FFFF00
Analogous
Two neighbors ±30° on the wheel
#00FF80
#00FF80
#00FFFF
#00FFFF
#007FFF
#007FFF
Split-complementary
Base + two colors flanking its complement
#00FFFF
#00FFFF
#FF0080
#FF0080
#FF8000
#FF8000
Tetradic
Two complementary pairs
#00FFFF
#00FFFF
#0000FF
#0000FF
#FF0000
#FF0000
#FFFF00
#FFFF00
Square
Four colors evenly spaced 90° apart
#00FFFF
#00FFFF
#7F00FF
#7F00FF
#FF0000
#FF0000
#80FF00
#80FF00
Cyan in every color space
Full conversion of Cyan 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
#00FFFF
RGB
rgb(0, 255, 255)
CMYK
cmyk(100%, 0%, 0%, 0%)
HSL
hsl(180, 100%, 50%)
HSV
hsv(180, 100%, 100%)
HWB
hwb(180 0% 0%)
CIE Lab
lab(91.1 -48.1 -14.1)
OKLCH
oklch(90.5% 0.155 194.8)
XYZ (D65)
xyz(53.80, 78.73, 106.95)
Copy-ready code for Cyan
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: #00FFFF;
background-color: #00FFFF;CSS variable
:root {
--color-cyan: #00FFFF;
}Tailwind config
// tailwind.config.js
colors: {
'cyan': '#00FFFF',
}Sass
$color-cyan: #00FFFF;Swift UIColor
UIColor(red: 0.000, green: 1.000, blue: 1.000, alpha: 1.0)Android XML
<color name="cyan">#00FFFF</color>Closest match in every color system
The nearest Cyan 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 CSS 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 6019
#BDECB6
Pastel green
RAL 9002
#E7EBDA
Grey white
RAL 9003
#F4F4F4
Signal white
RAL 7035
#D7D7D7
Light grey
RAL 9018
#D7D7D7
Papyrus white
FAQ about Cyan
What is the HEX code for Cyan?
Cyan (cyan) has the HEX code #00FFFF. In RGB it is rgb(0, 255, 255), and in CMYK it is cmyk(100%, 0%, 0%, 0%).
What is the OKLCH value of Cyan?
Cyan converts to oklch(0.905 0.155 194.8). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Cyan accessible for body text?
Used as a background, Cyan has a contrast ratio of 16.75:1 with black text and 1.25:1 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 Cyan?
The closest Pantone reference to Cyan by ΔE2000 perceptual distance is Pantone 304 C (#9CDBD9). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Cyan?
The closest RAL Classic reference to Cyan 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 Cyan?
The complementary color (180° opposite on the HSL color wheel) of Cyan is #FF0000. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
CSS Named Colors (CSS Color Module Level 4)
The 147 named colors defined by the W3C CSS Color Module Level 4 specification. Origin: VGA (16) + X11 (rest) + 'rebeccapurple'. Use as a reference for web color names that all browsers natively support. Names like 'crimson' or 'rebeccapurple' work as CSS values without any framework.
- Source type
- derived
- Confidence
- high
- License
- W3C permissive document license
- Last reviewed
- 2026-05-24
Workflow tags
CSS named colors are sRGB digital values defined for browsers. For print, convert to a process-appropriate color and proof against substrate.