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X11 named colors

Plum4

plum4 · #8B668B

HEX

#8B668B

RGB

rgb(139, 102, 139)

CMYK

cmyk(0%, 27%, 0%, 45%)

HSL

hsl(300, 15%, 47%)

LAB

lab(48.1, 21.5, -14.6)

What is Plum4?

Plum4 is the plum4 reference in the X11 named colors. Its sRGB value is #8B668B (rgb 139, 102, 139). It sits in the pink 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 Plum4 as a background.

Black text on this color

Sample text · 4.37 : 1
AA Normal
AA Large
AAA Normal
AAA Large

White text on this color

Sample text · 4.80 : 1
AA Normal
AA Large
AAA Normal
AAA Large

Shades, tints & tonal scale of Plum4

An 11-step tonal scale derived from Plum4 (#8B668B). 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.

Copied #F6F3F6

50

#F6F3F6

#F6F3F6

Copied #ECE7EC

100

#ECE7EC

#ECE7EC

Copied #DACEDA

200

#DACEDA

#DACEDA

Copied #C5B3C5

300

#C5B3C5

#C5B3C5

Copied #A88CA8

400

#A88CA8

#A88CA8

Copied #8B668B

500

#8B668B

#8B668B

Copied #765776

600

#765776

#765776

Copied #5A425A

700

#5A425A

#5A425A

Copied #3F2E3F

800

#3F2E3F

#3F2E3F

Copied #231A23

900

#231A23

#231A23

Copied #110C11

950

#110C11

#110C11

Lighter tints (mixed with white)

Copied #A48CA4

15%

#A48CA4

Copied #B8A8B8

30%

#B8A8B8

Copied #CABFCA

45%

#CABFCA

Copied #DAD3DA

60%

#DAD3DA

Copied #E9E5E9

75%

#E9E5E9

Darker shades (mixed with black)

Copied #815E81

15%

#815E81

Copied #765676

30%

#765676

Copied #694C69

45%

#694C69

Copied #5A415A

60%

#5A415A

Copied #483348

75%

#483348

Color harmonies for Plum4

Classic color-theory harmonies derived from rotating the hue of Plum4. Use these to build accent palettes, brand systems, and accessible UI color pairings.

Complementary

180° opposite — strongest contrast

Copied #8B668B

#8B668B

#8B668B

Copied #668A66

#668A66

#668A66

Triadic

Three colors 120° apart

Copied #8B668B

#8B668B

#8B668B

Copied #8A8A66

#8A8A66

#8A8A66

Copied #668A8A

#668A8A

#668A8A

Analogous

Two neighbors ±30° on the wheel

Copied #78668A

#78668A

#78668A

Copied #8B668B

#8B668B

#8B668B

Copied #8A6678

#8A6678

#8A6678

Split-complementary

Base + two colors flanking its complement

Copied #8B668B

#8B668B

#8B668B

Copied #788A66

#788A66

#788A66

Copied #668A78

#668A78

#668A78

Tetradic

Two complementary pairs

Copied #8B668B

#8B668B

#8B668B

Copied #8A6666

#8A6666

#8A6666

Copied #668A66

#668A66

#668A66

Copied #668A8A

#668A8A

#668A8A

Square

Four colors evenly spaced 90° apart

Copied #8B668B

#8B668B

#8B668B

Copied #8A7866

#8A7866

#8A7866

Copied #668A66

#668A66

#668A66

Copied #66788A

#66788A

#66788A

Plum4 in every color space

Full conversion of Plum4 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

#8B668B

RGB

rgb(139, 102, 139)

CMYK

cmyk(0%, 27%, 0%, 45%)

HSL

hsl(300, 15%, 47%)

HSV

hsv(300, 27%, 55%)

HWB

hwb(300 40% 45%)

CIE Lab

lab(48.1 21.5 -14.6)

OKLCH

oklch(56.1% 0.071 326.5)

XYZ (D65)

xyz(20.06, 16.86, 26.62)

Copy-ready code for Plum4

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: #8B668B;
background-color: #8B668B;

CSS variable

:root {
  --color-plum4: #8B668B;
}

Tailwind config

// tailwind.config.js
colors: {
  'plum4': '#8B668B',
}

Sass

$color-plum4: #8B668B;

Swift UIColor

UIColor(red: 0.545, green: 0.400, blue: 0.545, alpha: 1.0)

Android XML

<color name="plum4">#8B668B</color>

Closest match in every color system

The nearest Plum4 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.

Top 6 ΔE2000-closest Pantone references. Cross-system matching is approximate — see disclaimer.

Top 6 ΔE2000-closest RAL Classic references for industrial coating cross-reference.

Copied #924E7D

RAL 4008

#924E7D

Signal violet

Copied #6C4675

RAL 4005

#6C4675

Blue lilac

Copied #A18594

RAL 4009

#A18594

Pastel violet

Copied #6D3F5B

RAL 4001

#6D3F5B

Red lilac

Copied #A03472

RAL 4006

#A03472

Traffic purple

Copied #7F7679

RAL 7036

#7F7679

Platinum grey

FAQ about Plum4

What is the HEX code for Plum4?

Plum4 (plum4) has the HEX code #8B668B. In RGB it is rgb(139, 102, 139), and in CMYK it is cmyk(0%, 27%, 0%, 45%).

What is the OKLCH value of Plum4?

Plum4 converts to oklch(0.561 0.071 326.5). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.

Is Plum4 accessible for body text?

Used as a background, Plum4 has a contrast ratio of 4.37:1 with black text and 4.80:1 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 Plum4?

The closest Pantone reference to Plum4 by ΔE2000 perceptual distance is Pantone 528 C (#A05EB5). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.

What is the closest RAL color to Plum4?

The closest RAL Classic reference to Plum4 by ΔE2000 distance is RAL 4008 (Signal violet, #924E7D). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.

What is the complementary color of Plum4?

The complementary color (180° opposite on the HSL color wheel) of Plum4 is #668A66. 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
named-color
legacy
pink

X11 colors are sRGB digital values from a 1980s color system. For print, convert to a process-appropriate color and proof against substrate.

X11 named colors · Plum4 — #8B668B | PantoneTools