Seashell4
seashell4 · #8B8682
HEX
#8B8682
RGB
rgb(139, 134, 130)
CMYK
cmyk(0%, 4%, 6%, 45%)
HSL
hsl(27, 4%, 53%)
LAB
lab(56.2, 1.1, 2.8)
What is Seashell4?
Seashell4 is the seashell4 reference in the X11 named colors. Its sRGB value is #8B8682 (rgb 139, 134, 130). It sits in the neutral family. Historical X Window System color names — the numbered 1-4 lightness variants of the classic xorg-server rgb.txt palette. See disclaimer for accuracy and trademark notes.
Accessibility
WCAG 2.1 contrast checks for Seashell4 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Seashell4
An 11-step tonal scale derived from Seashell4 (#8B8682). 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
#F6F5F5
#F6F5F5
100
#ECECEB
#ECECEB
200
#DAD8D7
#DAD8D7
300
#C5C3C1
#C5C3C1
400
#A8A4A1
#A8A4A1
500
#8B8682
#8B8682
600
#76726F
#76726F
700
#5A5755
#5A5755
800
#3F3C3B
#3F3C3B
900
#232221
#232221
950
#111010
#111010
Lighter tints (mixed with white)
15%
#A4A09E
30%
#B8B6B4
45%
#CAC9C7
60%
#DAD9D8
75%
#E9E8E8
Darker shades (mixed with black)
15%
#817C79
30%
#76726E
45%
#696562
60%
#5A5754
75%
#484543
Color harmonies for Seashell4
Classic color-theory harmonies derived from rotating the hue of Seashell4. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#8B8682
#8B8682
#82888C
#82888C
Triadic
Three colors 120° apart
#8B8682
#8B8682
#828C87
#828C87
#87828C
#87828C
Analogous
Two neighbors ±30° on the wheel
#8C8283
#8C8283
#8B8682
#8B8682
#8C8B82
#8C8B82
Split-complementary
Base + two colors flanking its complement
#8B8682
#8B8682
#828C8B
#828C8B
#82838C
#82838C
Tetradic
Two complementary pairs
#8B8682
#8B8682
#888C82
#888C82
#82888C
#82888C
#87828C
#87828C
Square
Four colors evenly spaced 90° apart
#8B8682
#8B8682
#838C82
#838C82
#82888C
#82888C
#8B828C
#8B828C
Seashell4 in every color space
Full conversion of Seashell4 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
#8B8682
RGB
rgb(139, 134, 130)
CMYK
cmyk(0%, 4%, 6%, 45%)
HSL
hsl(27, 4%, 53%)
HSV
hsv(27, 6%, 55%)
HWB
hwb(27 51% 45%)
CIE Lab
lab(56.2 1.1 2.8)
OKLCH
oklch(62.3% 0.008 61.4)
XYZ (D65)
xyz(23.20, 24.15, 24.55)
Copy-ready code for Seashell4
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: #8B8682;
background-color: #8B8682;CSS variable
:root {
--color-seashell4: #8B8682;
}Tailwind config
// tailwind.config.js
colors: {
'seashell4': '#8B8682',
}Sass
$color-seashell4: #8B8682;Swift UIColor
UIColor(red: 0.545, green: 0.525, blue: 0.510, alpha: 1.0)Android XML
<color name="seashell4">#8B8682</color>Closest match in every color system
The nearest Seashell4 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 X11 named colors
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 9007
#8F8F8F
Grey aluminium
RAL 7037
#7D7F7D
Dusty grey
RAL 9023
#787878
Pearl dark grey
RAL 7036
#7F7679
Platinum grey
RAL 7042
#8D948D
Traffic grey A
RAL 7030
#8B8C7A
Stone grey
FAQ about Seashell4
What is the HEX code for Seashell4?
Seashell4 (seashell4) has the HEX code #8B8682. In RGB it is rgb(139, 134, 130), and in CMYK it is cmyk(0%, 4%, 6%, 45%).
What is the OKLCH value of Seashell4?
Seashell4 converts to oklch(0.623 0.008 61.4). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Seashell4 accessible for body text?
Used as a background, Seashell4 has a contrast ratio of 5.83:1 with black text and 3.60:1 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 Seashell4?
The closest Pantone reference to Seashell4 by ΔE2000 perceptual distance is Pantone Warm Gray 8 C (#8B8178). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Seashell4?
The closest RAL Classic reference to Seashell4 by ΔE2000 distance is RAL 9007 (Grey aluminium, #8F8F8F). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Seashell4?
The complementary color (180° opposite on the HSL color wheel) of Seashell4 is #82888C. Use it for high-contrast accents, error states, or call-to-action pairings.
Data provenance & source
X11 named colors (xorg rgb.txt)
The historical X11 color name list shipped in the xorg-server rgb.txt file. Roughly 550 entries covering classic computing color names like 'PapayaWhip', 'MediumAquamarine', and 'DarkSlateGray'. Many CSS named colors originate here. Use as a reference for legacy and creative color names. Most modern CSS implementations accept these names directly.
- Source type
- derived
- Confidence
- high
- License
- MIT/X11 license (X Consortium)
- Last reviewed
- 2026-05-24
Workflow tags
X11 colors are sRGB digital values from a 1980s color system. For print, convert to a process-appropriate color and proof against substrate.