Cyan 6
cyan-6 · #15AABF
HEX
#15AABF
RGB
rgb(21, 170, 191)
CMYK
cmyk(89%, 11%, 0%, 25%)
HSL
hsl(187, 80%, 42%)
LAB
lab(63.9, -28.0, -20.9)
What is Cyan 6?
Cyan 6 is the cyan-6 reference in the Open Color. Its sRGB value is #15AABF (rgb 21, 170, 191). It sits in the cyan family. Open Color, an open-source color palette by Heeyeun designed for UI work. 13 hues across 10 shades (0 to 9) tuned for screen legibility and accessibility. See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Cyan 6 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Cyan 6
An 11-step tonal scale derived from Cyan 6 (#15AABF). 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
#ECF8FA
#ECF8FA
100
#DAF1F5
#DAF1F5
200
#B4E4EB
#B4E4EB
300
#8AD5DF
#8AD5DF
400
#50BFCF
#50BFCF
500
#15AABF
#15AABF
600
#1291A2
#1291A2
700
#0E6F7C
#0E6F7C
800
#094D56
#094D56
900
#052B30
#052B30
950
#031417
#031417
Lighter tints (mixed with white)
15%
#6EBACA
30%
#96C9D5
45%
#B4D6DF
60%
#CCE2E8
75%
#E1EDF1
Darker shades (mixed with black)
15%
#139EB2
30%
#1091A3
45%
#0D8192
60%
#0A707E
75%
#065965
Color harmonies for Cyan 6
Classic color-theory harmonies derived from rotating the hue of Cyan 6. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#15AABF
#15AABF
#C12915
#C12915
Triadic
Three colors 120° apart
#15AABF
#15AABF
#C115AD
#C115AD
#ADC115
#ADC115
Analogous
Two neighbors ±30° on the wheel
#15C17F
#15C17F
#15AABF
#15AABF
#1557C1
#1557C1
Split-complementary
Base + two colors flanking its complement
#15AABF
#15AABF
#C11557
#C11557
#C17F15
#C17F15
Tetradic
Two complementary pairs
#15AABF
#15AABF
#2915C1
#2915C1
#C12915
#C12915
#ADC115
#ADC115
Square
Four colors evenly spaced 90° apart
#15AABF
#15AABF
#7F15C1
#7F15C1
#C12915
#C12915
#57C115
#57C115
Cyan 6 in every color space
Full conversion of Cyan 6 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
#15AABF
RGB
rgb(21, 170, 191)
CMYK
cmyk(89%, 11%, 0%, 25%)
HSL
hsl(187, 80%, 42%)
HSV
hsv(187, 89%, 75%)
HWB
hwb(187 8% 25%)
CIE Lab
lab(63.9 -28.0 -20.9)
OKLCH
oklch(67.8% 0.114 210.6)
XYZ (D65)
xyz(24.08, 32.67, 54.32)
Copy-ready code for Cyan 6
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: #15AABF;
background-color: #15AABF;CSS variable
:root {
--color-cyan-6: #15AABF;
}Tailwind config
// tailwind.config.js
colors: {
'cyan-6': '#15AABF',
}Sass
$color-cyan-6: #15AABF;Swift UIColor
UIColor(red: 0.082, green: 0.667, blue: 0.749, alpha: 1.0)Android XML
<color name="cyan-6">#15AABF</color>Closest match in every color system
The nearest Cyan 6 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 Open Color
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 5024
#5D9B9B
Pastel blue
RAL 5018
#3F888F
Turquoise blue
RAL 6027
#84C3BE
Light green
RAL 7000
#7E8B92
Squirrel grey
RAL 7001
#8F999F
Silver grey
RAL 5012
#3B83BD
Light blue
FAQ about Cyan 6
What is the HEX code for Cyan 6?
Cyan 6 (cyan-6) has the HEX code #15AABF. In RGB it is rgb(21, 170, 191), and in CMYK it is cmyk(89%, 11%, 0%, 25%).
What is the OKLCH value of Cyan 6?
Cyan 6 converts to oklch(0.678 0.114 210.6). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Cyan 6 accessible for body text?
Used as a background, Cyan 6 has a contrast ratio of 7.53:1 with black text and 2.79:1 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 6?
The closest Pantone reference to Cyan 6 by ΔE2000 perceptual distance is Pantone 3125 C (#00B0B9). 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 6?
The closest RAL Classic reference to Cyan 6 by ΔE2000 distance is RAL 5024 (Pastel blue, #5D9B9B). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Cyan 6?
The complementary color (180° opposite on the HSL color wheel) of Cyan 6 is #C12915. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
Open Color (Yeun)
Open Color, an open-source color palette by Heeyeun designed for UI designers and developers. 13 hues across 10 shades. Use as a designer-friendly palette alternative to Tailwind. Values are intentionally chosen for UI legibility and accessibility.
- Source type
- derived
- Confidence
- high
- License
- MIT
- Last reviewed
- 2026-05-24
Workflow tags
Open Color values are tuned for digital UI. For print, treat as a starting point and proof against the substrate.