Slateblue3
slateblue3 · #6959CD
HEX
#6959CD
RGB
rgb(105, 89, 205)
CMYK
cmyk(49%, 57%, 0%, 20%)
HSL
hsl(248, 54%, 58%)
LAB
lab(45.0, 36.4, -58.3)
What is Slateblue3?
Slateblue3 is the slateblue3 reference in the X11 named colors. Its sRGB value is #6959CD (rgb 105, 89, 205). It sits in the blue 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 Slateblue3 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Slateblue3
An 11-step tonal scale derived from Slateblue3 (#6959CD). 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
#F3F2FB
#F3F2FB
100
#E7E4F7
#E7E4F7
200
#CFCAEF
#CFCAEF
300
#B4ACE6
#B4ACE6
400
#8F83DA
#8F83DA
500
#6959CD
#6959CD
600
#594CAE
#594CAE
700
#443A85
#443A85
800
#2F285C
#2F285C
900
#1A1633
#1A1633
950
#0D0B19
#0D0B19
Lighter tints (mixed with white)
15%
#8E85D6
30%
#A9A4DE
45%
#C0BCE5
60%
#D4D1ED
75%
#E5E4F4
Darker shades (mixed with black)
15%
#6152BF
30%
#594BAF
45%
#4F429D
60%
#433887
75%
#352C6D
Color harmonies for Slateblue3
Classic color-theory harmonies derived from rotating the hue of Slateblue3. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#6959CD
#6959CD
#BECE5A
#BECE5A
Triadic
Three colors 120° apart
#6959CD
#6959CD
#CE695A
#CE695A
#5ACE69
#5ACE69
Analogous
Two neighbors ±30° on the wheel
#5A84CE
#5A84CE
#6959CD
#6959CD
#A35ACE
#A35ACE
Split-complementary
Base + two colors flanking its complement
#6959CD
#6959CD
#CEA35A
#CEA35A
#84CE5A
#84CE5A
Tetradic
Two complementary pairs
#6959CD
#6959CD
#CE5ABE
#CE5ABE
#BECE5A
#BECE5A
#5ACE69
#5ACE69
Square
Four colors evenly spaced 90° apart
#6959CD
#6959CD
#CE5A84
#CE5A84
#BECE5A
#BECE5A
#5ACEA3
#5ACEA3
Slateblue3 in every color space
Full conversion of Slateblue3 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
#6959CD
RGB
rgb(105, 89, 205)
CMYK
cmyk(49%, 57%, 0%, 20%)
HSL
hsl(248, 54%, 58%)
HSV
hsv(248, 57%, 80%)
HWB
hwb(248 35% 20%)
CIE Lab
lab(45.0 36.4 -58.3)
OKLCH
oklch(54.1% 0.173 285.4)
XYZ (D65)
xyz(20.41, 14.55, 59.48)
Copy-ready code for Slateblue3
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: #6959CD;
background-color: #6959CD;CSS variable
:root {
--color-slateblue3: #6959CD;
}Tailwind config
// tailwind.config.js
colors: {
'slateblue3': '#6959CD',
}Sass
$color-slateblue3: #6959CD;Swift UIColor
UIColor(red: 0.412, green: 0.349, blue: 0.804, alpha: 1.0)Android XML
<color name="slateblue3">#6959CD</color>Closest match in every color system
The nearest Slateblue3 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 5023
#49678D
Distant blue
RAL 5014
#606E8C
Pigeon blue
RAL 5007
#3E5F8A
Brilliant blue
RAL 5000
#354D73
Violet blue
RAL 5019
#1B5583
Capri blue
RAL 5015
#2271B3
Sky blue
FAQ about Slateblue3
What is the HEX code for Slateblue3?
Slateblue3 (slateblue3) has the HEX code #6959CD. In RGB it is rgb(105, 89, 205), and in CMYK it is cmyk(49%, 57%, 0%, 20%).
What is the OKLCH value of Slateblue3?
Slateblue3 converts to oklch(0.541 0.173 285.4). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Slateblue3 accessible for body text?
Used as a background, Slateblue3 has a contrast ratio of 3.91:1 with black text and 5.37:1 with white text. WCAG 2.1 AA requires 4.5:1 for normal text. The current recommendation is to use white text and verify in real UI context.
What is the closest Pantone to Slateblue3?
The closest Pantone reference to Slateblue3 by ΔE2000 perceptual distance is Pantone 2587 C (#8246AF). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Slateblue3?
The closest RAL Classic reference to Slateblue3 by ΔE2000 distance is RAL 5023 (Distant blue, #49678D). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Slateblue3?
The complementary color (180° opposite on the HSL color wheel) of Slateblue3 is #BECE5A. 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.