Indigo 0
indigo-0 · #EDF2FF
HEX
#EDF2FF
RGB
rgb(237, 242, 255)
CMYK
cmyk(7%, 5%, 0%, 0%)
HSL
hsl(223, 100%, 96%)
LAB
lab(95.5, 0.7, -6.8)
What is Indigo 0?
Indigo 0 is the indigo-0 reference in the Open Color. Its sRGB value is #EDF2FF (rgb 237, 242, 255). It sits in the blue 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 Indigo 0 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Indigo 0
An 11-step tonal scale derived from Indigo 0 (#EDF2FF). 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
#FEFEFF
#FEFEFF
100
#FCFDFF
#FCFDFF
200
#F9FBFF
#F9FBFF
300
#F6F9FF
#F6F9FF
400
#F2F5FF
#F2F5FF
500
#EDF2FF
#EDF2FF
600
#C9CED9
#C9CED9
700
#9A9DA6
#9A9DA6
800
#6B6D73
#6B6D73
900
#3B3D40
#3B3D40
950
#1C1D1F
#1C1D1F
Lighter tints (mixed with white)
15%
#F0F4FF
30%
#F3F6FF
45%
#F5F8FF
60%
#F8FAFF
75%
#FBFCFF
Darker shades (mixed with black)
15%
#DDE1ED
30%
#CACFDA
45%
#B6BAC4
60%
#9DA1AA
75%
#7F8289
Color harmonies for Indigo 0
Classic color-theory harmonies derived from rotating the hue of Indigo 0. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#EDF2FF
#EDF2FF
#FFF9EB
#FFF9EB
Triadic
Three colors 120° apart
#EDF2FF
#EDF2FF
#FFEBF0
#FFEBF0
#F0FFEB
#F0FFEB
Analogous
Two neighbors ±30° on the wheel
#EBFBFF
#EBFBFF
#EDF2FF
#EDF2FF
#EFEBFF
#EFEBFF
Split-complementary
Base + two colors flanking its complement
#EDF2FF
#EDF2FF
#FFEFEB
#FFEFEB
#FBFFEB
#FBFFEB
Tetradic
Two complementary pairs
#EDF2FF
#EDF2FF
#F9EBFF
#F9EBFF
#FFF9EB
#FFF9EB
#F0FFEB
#F0FFEB
Square
Four colors evenly spaced 90° apart
#EDF2FF
#EDF2FF
#FFEBFB
#FFEBFB
#FFF9EB
#FFF9EB
#EBFFEF
#EBFFEF
Indigo 0 in every color space
Full conversion of Indigo 0 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
#EDF2FF
RGB
rgb(237, 242, 255)
CMYK
cmyk(7%, 5%, 0%, 0%)
HSL
hsl(223, 100%, 96%)
HSV
hsv(223, 7%, 100%)
HWB
hwb(223 93% 0%)
CIE Lab
lab(95.5 0.7 -6.8)
OKLCH
oklch(96.1% 0.018 269.1)
XYZ (D65)
xyz(84.72, 88.73, 107.25)
Copy-ready code for Indigo 0
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: #EDF2FF;
background-color: #EDF2FF;CSS variable
:root {
--color-indigo-0: #EDF2FF;
}Tailwind config
// tailwind.config.js
colors: {
'indigo-0': '#EDF2FF',
}Sass
$color-indigo-0: #EDF2FF;Swift UIColor
UIColor(red: 0.929, green: 0.949, blue: 1.000, alpha: 1.0)Android XML
<color name="indigo-0">#EDF2FF</color>Closest match in every color system
The nearest Indigo 0 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 9003
#F4F4F4
Signal white
RAL 9016
#F6F6F6
Traffic white
RAL 9010
#FFFFFF
Pure white
RAL 7035
#D7D7D7
Light grey
RAL 9018
#D7D7D7
Papyrus white
RAL 9001
#FDF4E3
Cream
FAQ about Indigo 0
What is the HEX code for Indigo 0?
Indigo 0 (indigo-0) has the HEX code #EDF2FF. In RGB it is rgb(237, 242, 255), and in CMYK it is cmyk(7%, 5%, 0%, 0%).
What is the OKLCH value of Indigo 0?
Indigo 0 converts to oklch(0.961 0.018 269.1). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Indigo 0 accessible for body text?
Used as a background, Indigo 0 has a contrast ratio of 18.75:1 with black text and 1.12:1 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 Indigo 0?
The closest Pantone reference to Indigo 0 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 Indigo 0?
The closest RAL Classic reference to Indigo 0 by ΔE2000 distance is RAL 9003 (Signal white, #F4F4F4). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Indigo 0?
The complementary color (180° opposite on the HSL color wheel) of Indigo 0 is #FFF9EB. 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.