Indigo 100
indigo-100 · #E0E7FF
HEX
#E0E7FF
RGB
rgb(224, 231, 255)
CMYK
cmyk(12%, 9%, 0%, 0%)
HSL
hsl(226, 100%, 94%)
LAB
lab(91.8, 2.3, -12.4)
What is Indigo 100?
Indigo 100 is the indigo-100 reference in the Tailwind CSS palette. Its sRGB value is #E0E7FF (rgb 224, 231, 255). It sits in the purple family. The default color palette shipped with Tailwind CSS v3 by Tailwind Labs. 22 color families across 11 lightness steps (50 to 950). See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Indigo 100 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Indigo 100
An 11-step tonal scale derived from Indigo 100 (#E0E7FF). 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
#FDFDFF
#FDFDFF
100
#FAFBFF
#FAFBFF
200
#F5F7FF
#F5F7FF
300
#F0F3FF
#F0F3FF
400
#E8EDFF
#E8EDFF
500
#E0E7FF
#E0E7FF
600
#BEC4D9
#BEC4D9
700
#9296A6
#9296A6
800
#656873
#656873
900
#383A40
#383A40
950
#1B1C1F
#1B1C1F
Lighter tints (mixed with white)
15%
#E5EBFF
30%
#EAEFFF
45%
#EFF2FF
60%
#F3F6FF
75%
#F8F9FF
Darker shades (mixed with black)
15%
#D0D7ED
30%
#BFC5DA
45%
#ACB1C4
60%
#9499AA
75%
#787B89
Color harmonies for Indigo 100
Classic color-theory harmonies derived from rotating the hue of Indigo 100. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#E0E7FF
#E0E7FF
#FFF8E0
#FFF8E0
Triadic
Three colors 120° apart
#E0E7FF
#E0E7FF
#FFE0E8
#FFE0E8
#E8FFE0
#E8FFE0
Analogous
Two neighbors ±30° on the wheel
#E0F7FF
#E0F7FF
#E0E7FF
#E0E7FF
#E9E0FF
#E9E0FF
Split-complementary
Base + two colors flanking its complement
#E0E7FF
#E0E7FF
#FFE9E0
#FFE9E0
#F7FFE0
#F7FFE0
Tetradic
Two complementary pairs
#E0E7FF
#E0E7FF
#F8E0FF
#F8E0FF
#FFF8E0
#FFF8E0
#E8FFE0
#E8FFE0
Square
Four colors evenly spaced 90° apart
#E0E7FF
#E0E7FF
#FFE0F7
#FFE0F7
#FFF8E0
#FFF8E0
#E0FFE9
#E0FFE9
Indigo 100 in every color space
Full conversion of Indigo 100 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
#E0E7FF
RGB
rgb(224, 231, 255)
CMYK
cmyk(12%, 9%, 0%, 0%)
HSL
hsl(226, 100%, 94%)
HSV
hsv(226, 12%, 100%)
HWB
hwb(226 88% 0%)
CIE Lab
lab(91.8 2.3 -12.4)
OKLCH
oklch(93.0% 0.033 272.8)
XYZ (D65)
xyz(77.36, 80.22, 106.00)
Copy-ready code for Indigo 100
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: #E0E7FF;
background-color: #E0E7FF;CSS variable
:root {
--color-indigo-100: #E0E7FF;
}Tailwind config
// tailwind.config.js
colors: {
'indigo-100': '#E0E7FF',
}Sass
$color-indigo-100: #E0E7FF;Swift UIColor
UIColor(red: 0.878, green: 0.906, blue: 1.000, alpha: 1.0)Android XML
<color name="indigo-100">#E0E7FF</color>Closest match in every color system
The nearest Indigo 100 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 Tailwind CSS palette
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 7035
#D7D7D7
Light grey
RAL 9018
#D7D7D7
Papyrus white
RAL 9010
#FFFFFF
Pure white
RAL 7038
#B5B8B1
Agate grey
FAQ about Indigo 100
What is the HEX code for Indigo 100?
Indigo 100 (indigo-100) has the HEX code #E0E7FF. In RGB it is rgb(224, 231, 255), and in CMYK it is cmyk(12%, 9%, 0%, 0%).
What is the OKLCH value of Indigo 100?
Indigo 100 converts to oklch(0.930 0.033 272.8). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Indigo 100 accessible for body text?
Used as a background, Indigo 100 has a contrast ratio of 17.04:1 with black text and 1.23:1 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 100?
The closest Pantone reference to Indigo 100 by ΔE2000 perceptual distance is Pantone 290 C (#B9D9EB). 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 100?
The closest RAL Classic reference to Indigo 100 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 100?
The complementary color (180° opposite on the HSL color wheel) of Indigo 100 is #FFF8E0. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
Tailwind CSS default palette (v3)
The default color palette shipped with Tailwind CSS v3 by Tailwind Labs Inc. Use as a reference for design tokens, web color systems, and Tailwind-based design conversations. Names like 'blue-500' are the project's own naming convention.
- Source type
- derived
- Confidence
- high
- License
- MIT
- Last reviewed
- 2026-05-24
Workflow tags
Tailwind palette values are designed for digital interfaces under sRGB. For print, convert to a process-appropriate value and proof against the substrate; do not rely on sRGB CMYK conversion for color-critical print work.