Sienna3
sienna3 · #CD6839
HEX
#CD6839
RGB
rgb(205, 104, 57)
CMYK
cmyk(0%, 49%, 72%, 20%)
HSL
hsl(19, 60%, 51%)
LAB
lab(55.3, 36.5, 43.8)
What is Sienna3?
Sienna3 is the sienna3 reference in the X11 named colors. Its sRGB value is #CD6839 (rgb 205, 104, 57). 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 Sienna3 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Sienna3
An 11-step tonal scale derived from Sienna3 (#CD6839). 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
#FBF3EF
#FBF3EF
100
#F7E7DF
#F7E7DF
200
#EFCFC0
#EFCFC0
300
#E6B49C
#E6B49C
400
#DA8E6B
#DA8E6B
500
#CD6839
#CD6839
600
#AE5830
#AE5830
700
#854425
#854425
800
#5C2F1A
#5C2F1A
900
#331A0E
#331A0E
950
#190C07
#190C07
Lighter tints (mixed with white)
15%
#D68D77
30%
#DEA99B
45%
#E5C0B7
60%
#EDD4CE
75%
#F4E5E2
Darker shades (mixed with black)
15%
#BF6034
30%
#AF582F
45%
#9D4E29
60%
#874322
75%
#6D341A
Color harmonies for Sienna3
Classic color-theory harmonies derived from rotating the hue of Sienna3. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#CD6839
#CD6839
#379ECD
#379ECD
Triadic
Three colors 120° apart
#CD6839
#CD6839
#37CD67
#37CD67
#6737CD
#6737CD
Analogous
Two neighbors ±30° on the wheel
#CD3753
#CD3753
#CD6839
#CD6839
#CDB237
#CDB237
Split-complementary
Base + two colors flanking its complement
#CD6839
#CD6839
#37CDB2
#37CDB2
#3753CD
#3753CD
Tetradic
Two complementary pairs
#CD6839
#CD6839
#9ECD37
#9ECD37
#379ECD
#379ECD
#6737CD
#6737CD
Square
Four colors evenly spaced 90° apart
#CD6839
#CD6839
#53CD37
#53CD37
#379ECD
#379ECD
#B237CD
#B237CD
Sienna3 in every color space
Full conversion of Sienna3 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
#CD6839
RGB
rgb(205, 104, 57)
CMYK
cmyk(0%, 49%, 72%, 20%)
HSL
hsl(19, 60%, 51%)
HSV
hsv(19, 72%, 80%)
HWB
hwb(19 22% 20%)
CIE Lab
lab(55.3 36.5 43.8)
OKLCH
oklch(62.8% 0.142 44.1)
XYZ (D65)
xyz(30.87, 23.18, 6.72)
Copy-ready code for Sienna3
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: #CD6839;
background-color: #CD6839;CSS variable
:root {
--color-sienna3: #CD6839;
}Tailwind config
// tailwind.config.js
colors: {
'sienna3': '#CD6839',
}Sass
$color-sienna3: #CD6839;Swift UIColor
UIColor(red: 0.804, green: 0.408, blue: 0.224, alpha: 1.0)Android XML
<color name="sienna3">#CD6839</color>Closest match in every color system
The nearest Sienna3 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 2010
#D84B20
Signal orange
RAL 3022
#D95030
Salmon pink
RAL 2008
#F75E25
Bright red orange
RAL 2012
#E55137
Salmon orange
RAL 2004
#F44611
Pure orange
RAL 8023
#A65E2E
Orange brown
FAQ about Sienna3
What is the HEX code for Sienna3?
Sienna3 (sienna3) has the HEX code #CD6839. In RGB it is rgb(205, 104, 57), and in CMYK it is cmyk(0%, 49%, 72%, 20%).
What is the OKLCH value of Sienna3?
Sienna3 converts to oklch(0.628 0.142 44.1). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Sienna3 accessible for body text?
Used as a background, Sienna3 has a contrast ratio of 5.64:1 with black text and 3.73:1 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 Sienna3?
The closest Pantone reference to Sienna3 by ΔE2000 perceptual distance is Pantone 1595 C (#D86018). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Sienna3?
The closest RAL Classic reference to Sienna3 by ΔE2000 distance is RAL 2010 (Signal orange, #D84B20). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Sienna3?
The complementary color (180° opposite on the HSL color wheel) of Sienna3 is #379ECD. 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.