Stone 400
stone-400 · #A8A29E
HEX
#A8A29E
RGB
rgb(168, 162, 158)
CMYK
cmyk(0%, 4%, 6%, 34%)
HSL
hsl(24, 5%, 64%)
LAB
lab(67.0, 1.4, 2.9)
What is Stone 400?
Stone 400 is the stone-400 reference in the Tailwind CSS palette. Its sRGB value is #A8A29E (rgb 168, 162, 158). 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 Stone 400 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Stone 400
An 11-step tonal scale derived from Stone 400 (#A8A29E). 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
#F8F8F7
#F8F8F7
100
#F1F0EF
#F1F0EF
200
#E3E1E0
#E3E1E0
300
#D4D1CF
#D4D1CF
400
#BEB9B6
#BEB9B6
500
#A8A29E
#A8A29E
600
#8F8A86
#8F8A86
700
#6D6967
#6D6967
800
#4C4947
#4C4947
900
#2A2928
#2A2928
950
#141313
#141313
Lighter tints (mixed with white)
15%
#B9B4B1
30%
#C7C4C2
45%
#D5D3D1
60%
#E1E0DF
75%
#EDECEC
Darker shades (mixed with black)
15%
#9C9693
30%
#8F8A86
45%
#807B78
60%
#6E6A67
75%
#585553
Color harmonies for Stone 400
Classic color-theory harmonies derived from rotating the hue of Stone 400. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#A8A29E
#A8A29E
#9FA4A8
#9FA4A8
Triadic
Three colors 120° apart
#A8A29E
#A8A29E
#9FA8A2
#9FA8A2
#A29FA8
#A29FA8
Analogous
Two neighbors ±30° on the wheel
#A89FA0
#A89FA0
#A8A29E
#A8A29E
#A8A79F
#A8A79F
Split-complementary
Base + two colors flanking its complement
#A8A29E
#A8A29E
#9FA8A7
#9FA8A7
#9FA0A8
#9FA0A8
Tetradic
Two complementary pairs
#A8A29E
#A8A29E
#A4A89F
#A4A89F
#9FA4A8
#9FA4A8
#A29FA8
#A29FA8
Square
Four colors evenly spaced 90° apart
#A8A29E
#A8A29E
#A0A89F
#A0A89F
#9FA4A8
#9FA4A8
#A79FA8
#A79FA8
Stone 400 in every color space
Full conversion of Stone 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
#A8A29E
RGB
rgb(168, 162, 158)
CMYK
cmyk(0%, 4%, 6%, 34%)
HSL
hsl(24, 5%, 64%)
HSV
hsv(24, 6%, 66%)
HWB
hwb(24 62% 34%)
CIE Lab
lab(67.0 1.4 2.9)
OKLCH
oklch(71.6% 0.009 56.3)
XYZ (D65)
xyz(35.24, 36.63, 37.56)
Copy-ready code for Stone 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: #A8A29E;
background-color: #A8A29E;CSS variable
:root {
--color-stone-400: #A8A29E;
}Tailwind config
// tailwind.config.js
colors: {
'stone-400': '#A8A29E',
}Sass
$color-stone-400: #A8A29E;Swift UIColor
UIColor(red: 0.659, green: 0.635, blue: 0.620, alpha: 1.0)Android XML
<color name="stone-400">#A8A29E</color>Closest match in every color system
The nearest Stone 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 9007
#8F8F8F
Grey aluminium
RAL 7040
#9DA1AA
Window grey
RAL 7038
#B5B8B1
Agate grey
RAL 7001
#8F999F
Silver grey
FAQ about Stone 400
What is the HEX code for Stone 400?
Stone 400 (stone-400) has the HEX code #A8A29E. In RGB it is rgb(168, 162, 158), and in CMYK it is cmyk(0%, 4%, 6%, 34%).
What is the OKLCH value of Stone 400?
Stone 400 converts to oklch(0.716 0.009 56.3). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Stone 400 accessible for body text?
Used as a background, Stone 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 Stone 400?
The closest Pantone reference to Stone 400 by ΔE2000 perceptual distance is Pantone Warm Gray 5 C (#A8A29A). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Stone 400?
The closest RAL Classic reference to Stone 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 Stone 400?
The complementary color (180° opposite on the HSL color wheel) of Stone 400 is #9FA4A8. 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.