Seashell3
seashell3 · #CDC5BF
HEX
#CDC5BF
RGB
rgb(205, 197, 191)
CMYK
cmyk(0%, 4%, 7%, 20%)
HSL
hsl(26, 12%, 78%)
LAB
lab(80.0, 1.7, 4.0)
What is Seashell3?
Seashell3 is the seashell3 reference in the X11 named colors. Its sRGB value is #CDC5BF (rgb 205, 197, 191). It sits in the orange 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 Seashell3 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Seashell3
An 11-step tonal scale derived from Seashell3 (#CDC5BF). 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
#FBFAFA
#FBFAFA
100
#F7F6F5
#F7F6F5
200
#EFECEB
#EFECEB
300
#E6E2DF
#E6E2DF
400
#DAD4CF
#DAD4CF
500
#CDC5BF
#CDC5BF
600
#AEA7A2
#AEA7A2
700
#85807C
#85807C
800
#5C5956
#5C5956
900
#333130
#333130
950
#191817
#191817
Lighter tints (mixed with white)
15%
#D6CFCA
30%
#DED9D5
45%
#E5E2DF
60%
#EDEAE8
75%
#F4F2F1
Darker shades (mixed with black)
15%
#BFB7B2
30%
#AFA8A3
45%
#9D9692
60%
#87827E
75%
#6D6865
Color harmonies for Seashell3
Classic color-theory harmonies derived from rotating the hue of Seashell3. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#CDC5BF
#CDC5BF
#C0C8CE
#C0C8CE
Triadic
Three colors 120° apart
#CDC5BF
#CDC5BF
#C0CEC6
#C0CEC6
#C6C0CE
#C6C0CE
Analogous
Two neighbors ±30° on the wheel
#CEC0C1
#CEC0C1
#CDC5BF
#CDC5BF
#CECDC0
#CECDC0
Split-complementary
Base + two colors flanking its complement
#CDC5BF
#CDC5BF
#C0CECD
#C0CECD
#C0C1CE
#C0C1CE
Tetradic
Two complementary pairs
#CDC5BF
#CDC5BF
#C8CEC0
#C8CEC0
#C0C8CE
#C0C8CE
#C6C0CE
#C6C0CE
Square
Four colors evenly spaced 90° apart
#CDC5BF
#CDC5BF
#C1CEC0
#C1CEC0
#C0C8CE
#C0C8CE
#CDC0CE
#CDC0CE
Seashell3 in every color space
Full conversion of Seashell3 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
#CDC5BF
RGB
rgb(205, 197, 191)
CMYK
cmyk(0%, 4%, 7%, 20%)
HSL
hsl(26, 12%, 78%)
HSV
hsv(26, 7%, 80%)
HWB
hwb(26 75% 20%)
CIE Lab
lab(80.0 1.7 4.0)
OKLCH
oklch(82.8% 0.012 59.5)
XYZ (D65)
xyz(54.55, 56.67, 57.35)
Copy-ready code for Seashell3
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: #CDC5BF;
background-color: #CDC5BF;CSS variable
:root {
--color-seashell3: #CDC5BF;
}Tailwind config
// tailwind.config.js
colors: {
'seashell3': '#CDC5BF',
}Sass
$color-seashell3: #CDC5BF;Swift UIColor
UIColor(red: 0.804, green: 0.773, blue: 0.749, alpha: 1.0)Android XML
<color name="seashell3">#CDC5BF</color>Closest match in every color system
The nearest Seashell3 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 7035
#D7D7D7
Light grey
RAL 9018
#D7D7D7
Papyrus white
RAL 7044
#CAC4B0
Silk grey
RAL 7038
#B5B8B1
Agate grey
RAL 9006
#A5A5A5
White aluminium
RAL 9003
#F4F4F4
Signal white
FAQ about Seashell3
What is the HEX code for Seashell3?
Seashell3 (seashell3) has the HEX code #CDC5BF. In RGB it is rgb(205, 197, 191), and in CMYK it is cmyk(0%, 4%, 7%, 20%).
What is the OKLCH value of Seashell3?
Seashell3 converts to oklch(0.828 0.012 59.5). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Seashell3 accessible for body text?
Used as a background, Seashell3 has a contrast ratio of 12.33:1 with black text and 1.70:1 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 Seashell3?
The closest Pantone reference to Seashell3 by ΔE2000 perceptual distance is Pantone Warm Gray 2 C (#CECAC2). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Seashell3?
The closest RAL Classic reference to Seashell3 by ΔE2000 distance is RAL 7035 (Light grey, #D7D7D7). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Seashell3?
The complementary color (180° opposite on the HSL color wheel) of Seashell3 is #C0C8CE. 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.