Neutral 400
neutral-400 · #A3A3A3
HEX
#A3A3A3
RGB
rgb(163, 163, 163)
CMYK
cmyk(0%, 0%, 0%, 36%)
HSL
hsl(0, 0%, 64%)
LAB
lab(67.0, 0.0, 0.0)
What is Neutral 400?
Neutral 400 is the neutral-400 reference in the Tailwind CSS palette. Its sRGB value is #A3A3A3 (rgb 163, 163, 163). It sits in the neutral 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 Neutral 400 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Neutral 400
An 11-step tonal scale derived from Neutral 400 (#A3A3A3). 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
#F8F8F8
#F8F8F8
100
#F0F0F0
#F0F0F0
200
#E2E2E2
#E2E2E2
300
#D1D1D1
#D1D1D1
400
#BABABA
#BABABA
500
#A3A3A3
#A3A3A3
600
#8B8B8B
#8B8B8B
700
#6A6A6A
#6A6A6A
800
#494949
#494949
900
#292929
#292929
950
#141414
#141414
Lighter tints (mixed with white)
15%
#B5B5B5
30%
#C5C5C5
45%
#D3D3D3
60%
#E0E0E0
75%
#ECECEC
Darker shades (mixed with black)
15%
#979797
30%
#8B8B8B
45%
#7C7C7C
60%
#6B6B6B
75%
#555555
Color harmonies for Neutral 400
Classic color-theory harmonies derived from rotating the hue of Neutral 400. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
Triadic
Three colors 120° apart
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
Analogous
Two neighbors ±30° on the wheel
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
Split-complementary
Base + two colors flanking its complement
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
Tetradic
Two complementary pairs
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
Square
Four colors evenly spaced 90° apart
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
#A3A3A3
Neutral 400 in every color space
Full conversion of Neutral 400 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
#A3A3A3
RGB
rgb(163, 163, 163)
CMYK
cmyk(0%, 0%, 0%, 36%)
HSL
hsl(0, 0%, 64%)
HSV
hsv(0, 0%, 64%)
HWB
hwb(0 64% 36%)
CIE Lab
lab(67.0 0.0 0.0)
OKLCH
oklch(71.5% 0.000 89.9)
XYZ (D65)
xyz(34.81, 36.63, 39.88)
Copy-ready code for Neutral 400
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: #A3A3A3;
background-color: #A3A3A3;CSS variable
:root {
--color-neutral-400: #A3A3A3;
}Tailwind config
// tailwind.config.js
colors: {
'neutral-400': '#A3A3A3',
}Sass
$color-neutral-400: #A3A3A3;Swift UIColor
UIColor(red: 0.639, green: 0.639, blue: 0.639, alpha: 1.0)Android XML
<color name="neutral-400">#A3A3A3</color>Closest match in every color system
The nearest Neutral 400 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 9006
#A5A5A5
White aluminium
RAL 7004
#9EA0A1
Signal grey
RAL 7040
#9DA1AA
Window grey
RAL 7001
#8F999F
Silver grey
RAL 9007
#8F8F8F
Grey aluminium
RAL 7038
#B5B8B1
Agate grey
FAQ about Neutral 400
What is the HEX code for Neutral 400?
Neutral 400 (neutral-400) has the HEX code #A3A3A3. In RGB it is rgb(163, 163, 163), and in CMYK it is cmyk(0%, 0%, 0%, 36%).
What is the OKLCH value of Neutral 400?
Neutral 400 converts to oklch(0.715 0.000 89.9). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Neutral 400 accessible for body text?
Used as a background, Neutral 400 has a contrast ratio of 8.33:1 with black text and 2.52:1 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 Neutral 400?
The closest Pantone reference to Neutral 400 by ΔE2000 perceptual distance is Pantone Cool Gray 6 C (#A7A8AA). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Neutral 400?
The closest RAL Classic reference to Neutral 400 by ΔE2000 distance is RAL 9006 (White aluminium, #A5A5A5). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Neutral 400?
The complementary color (180° opposite on the HSL color wheel) of Neutral 400 is #A3A3A3. 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.