Indigo 800
indigo-800 · #3730A3
HEX
#3730A3
RGB
rgb(55, 48, 163)
CMYK
cmyk(66%, 71%, 0%, 36%)
HSL
hsl(244, 55%, 41%)
LAB
lab(28.3, 39.0, -60.9)
What is Indigo 800?
Indigo 800 is the indigo-800 reference in the Tailwind CSS palette. Its sRGB value is #3730A3 (rgb 55, 48, 163). 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 800 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Indigo 800
An 11-step tonal scale derived from Indigo 800 (#3730A3). 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
#EFEEF8
#EFEEF8
100
#DFDEF0
#DFDEF0
200
#BFBDE2
#BFBDE2
300
#9B98D1
#9B98D1
400
#6964BA
#6964BA
500
#3730A3
#3730A3
600
#2F298B
#2F298B
700
#241F6A
#241F6A
800
#191649
#191649
900
#0E0C29
#0E0C29
950
#070614
#070614
Lighter tints (mixed with white)
15%
#7674B5
30%
#9B99C5
45%
#B7B6D3
60%
#CECDE0
75%
#E2E2EC
Darker shades (mixed with black)
15%
#322C97
30%
#2D278B
45%
#28227C
60%
#211C6B
75%
#191555
Color harmonies for Indigo 800
Classic color-theory harmonies derived from rotating the hue of Indigo 800. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#3730A3
#3730A3
#9AA22F
#9AA22F
Triadic
Three colors 120° apart
#3730A3
#3730A3
#A2372F
#A2372F
#2FA237
#2FA237
Analogous
Two neighbors ±30° on the wheel
#2F61A2
#2F61A2
#3730A3
#3730A3
#702FA2
#702FA2
Split-complementary
Base + two colors flanking its complement
#3730A3
#3730A3
#A2702F
#A2702F
#61A22F
#61A22F
Tetradic
Two complementary pairs
#3730A3
#3730A3
#A22F9A
#A22F9A
#9AA22F
#9AA22F
#2FA237
#2FA237
Square
Four colors evenly spaced 90° apart
#3730A3
#3730A3
#A22F61
#A22F61
#9AA22F
#9AA22F
#2FA270
#2FA270
Indigo 800 in every color space
Full conversion of Indigo 800 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
#3730A3
RGB
rgb(55, 48, 163)
CMYK
cmyk(66%, 71%, 0%, 36%)
HSL
hsl(244, 55%, 41%)
HSV
hsv(244, 71%, 64%)
HWB
hwb(244 19% 36%)
CIE Lab
lab(28.3 39.0 -60.9)
OKLCH
oklch(39.8% 0.177 277.4)
XYZ (D65)
xyz(9.24, 5.57, 35.23)
Copy-ready code for Indigo 800
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: #3730A3;
background-color: #3730A3;CSS variable
:root {
--color-indigo-800: #3730A3;
}Tailwind config
// tailwind.config.js
colors: {
'indigo-800': '#3730A3',
}Sass
$color-indigo-800: #3730A3;Swift UIColor
UIColor(red: 0.216, green: 0.188, blue: 0.639, alpha: 1.0)Android XML
<color name="indigo-800">#3730A3</color>Closest match in every color system
The nearest Indigo 800 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 5005
#1E2460
Signal blue
RAL 5017
#063971
Traffic blue
RAL 5000
#354D73
Violet blue
RAL 5020
#1D334A
Ocean blue
RAL 5002
#20214F
Ultramarine blue
RAL 5022
#252850
Night blue
FAQ about Indigo 800
What is the HEX code for Indigo 800?
Indigo 800 (indigo-800) has the HEX code #3730A3. In RGB it is rgb(55, 48, 163), and in CMYK it is cmyk(66%, 71%, 0%, 36%).
What is the OKLCH value of Indigo 800?
Indigo 800 converts to oklch(0.398 0.177 277.4). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Indigo 800 accessible for body text?
Used as a background, Indigo 800 has a contrast ratio of 2.11:1 with black text and 9.93:1 with white text. WCAG 2.1 AA requires 4.5:1 for normal text. The current recommendation is to use white text and verify in real UI context.
What is the closest Pantone to Indigo 800?
The closest Pantone reference to Indigo 800 by ΔE2000 perceptual distance is Pantone 286 C (#0033A0). 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 800?
The closest RAL Classic reference to Indigo 800 by ΔE2000 distance is RAL 5005 (Signal blue, #1E2460). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Indigo 800?
The complementary color (180° opposite on the HSL color wheel) of Indigo 800 is #9AA22F. 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.