Azure1
azure1 · #F0FFFF
HEX
#F0FFFF
RGB
rgb(240, 255, 255)
CMYK
cmyk(6%, 0%, 0%, 0%)
HSL
hsl(180, 100%, 97%)
LAB
lab(98.9, -4.9, -1.7)
What is Azure1?
Azure1 is the azure1 reference in the X11 named colors. Its sRGB value is #F0FFFF (rgb 240, 255, 255). 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 Azure1 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Azure1
An 11-step tonal scale derived from Azure1 (#F0FFFF). 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
#FEFFFF
#FEFFFF
100
#FDFFFF
#FDFFFF
200
#FAFFFF
#FAFFFF
300
#F8FFFF
#F8FFFF
400
#F4FFFF
#F4FFFF
500
#F0FFFF
#F0FFFF
600
#CCD9D9
#CCD9D9
700
#9CA6A6
#9CA6A6
800
#6C7373
#6C7373
900
#3C4040
#3C4040
950
#1D1F1F
#1D1F1F
Lighter tints (mixed with white)
15%
#F2FFFF
30%
#F5FFFF
45%
#F7FFFF
60%
#F9FFFF
75%
#FBFFFF
Darker shades (mixed with black)
15%
#DFEDED
30%
#CDDADA
45%
#B8C4C4
60%
#9FAAAA
75%
#818989
Color harmonies for Azure1
Classic color-theory harmonies derived from rotating the hue of Azure1. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#F0FFFF
#F0FFFF
#FFF0F0
#FFF0F0
Triadic
Three colors 120° apart
#F0FFFF
#F0FFFF
#FFF0FF
#FFF0FF
#FFFFF0
#FFFFF0
Analogous
Two neighbors ±30° on the wheel
#F0FFF7
#F0FFF7
#F0FFFF
#F0FFFF
#F0F7FF
#F0F7FF
Split-complementary
Base + two colors flanking its complement
#F0FFFF
#F0FFFF
#FFF0F7
#FFF0F7
#FFF7F0
#FFF7F0
Tetradic
Two complementary pairs
#F0FFFF
#F0FFFF
#F0F0FF
#F0F0FF
#FFF0F0
#FFF0F0
#FFFFF0
#FFFFF0
Square
Four colors evenly spaced 90° apart
#F0FFFF
#F0FFFF
#F7F0FF
#F7F0FF
#FFF0F0
#FFF0F0
#F7FFF0
#F7FFF0
Azure1 in every color space
Full conversion of Azure1 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
#F0FFFF
RGB
rgb(240, 255, 255)
CMYK
cmyk(6%, 0%, 0%, 0%)
HSL
hsl(180, 100%, 97%)
HSV
hsv(180, 6%, 100%)
HWB
hwb(180 94% 0%)
CIE Lab
lab(98.9 -4.9 -1.7)
OKLCH
oklch(98.9% 0.016 196.9)
XYZ (D65)
xyz(89.74, 97.26, 108.63)
Copy-ready code for Azure1
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: #F0FFFF;
background-color: #F0FFFF;CSS variable
:root {
--color-azure1: #F0FFFF;
}Tailwind config
// tailwind.config.js
colors: {
'azure1': '#F0FFFF',
}Sass
$color-azure1: #F0FFFF;Swift UIColor
UIColor(red: 0.941, green: 1.000, blue: 1.000, alpha: 1.0)Android XML
<color name="azure1">#F0FFFF</color>Closest match in every color system
The nearest Azure1 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 9010
#FFFFFF
Pure white
RAL 9016
#F6F6F6
Traffic white
RAL 9003
#F4F4F4
Signal white
RAL 9002
#E7EBDA
Grey white
RAL 7035
#D7D7D7
Light grey
RAL 9018
#D7D7D7
Papyrus white
FAQ about Azure1
What is the HEX code for Azure1?
Azure1 (azure1) has the HEX code #F0FFFF. In RGB it is rgb(240, 255, 255), and in CMYK it is cmyk(6%, 0%, 0%, 0%).
What is the OKLCH value of Azure1?
Azure1 converts to oklch(0.989 0.016 196.9). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Azure1 accessible for body text?
Used as a background, Azure1 has a contrast ratio of 20.45:1 with black text and 1.03:1 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 Azure1?
The closest Pantone reference to Azure1 by ΔE2000 perceptual distance is Pantone Cool Gray 1 C (#D9D9D6). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Azure1?
The closest RAL Classic reference to Azure1 by ΔE2000 distance is RAL 9010 (Pure white, #FFFFFF). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Azure1?
The complementary color (180° opposite on the HSL color wheel) of Azure1 is #FFF0F0. 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.