Cadetblue4
cadetblue4 · #53868B
HEX
#53868B
RGB
rgb(83, 134, 139)
CMYK
cmyk(40%, 4%, 0%, 45%)
HSL
hsl(185, 25%, 44%)
LAB
lab(52.7, -15.7, -8.1)
What is Cadetblue4?
Cadetblue4 is the cadetblue4 reference in the X11 named colors. Its sRGB value is #53868B (rgb 83, 134, 139). It sits in the cyan 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 Cadetblue4 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Cadetblue4
An 11-step tonal scale derived from Cadetblue4 (#53868B). 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
#F1F5F6
#F1F5F6
100
#E3ECEC
#E3ECEC
200
#C8D8DA
#C8D8DA
300
#A9C3C5
#A9C3C5
400
#7EA4A8
#7EA4A8
500
#53868B
#53868B
600
#477276
#477276
700
#36575A
#36575A
800
#253C3F
#253C3F
900
#152223
#152223
950
#0A1011
#0A1011
Lighter tints (mixed with white)
15%
#82A0A4
30%
#A2B6B8
45%
#BBC9CA
60%
#D1D9DA
75%
#E3E8E9
Darker shades (mixed with black)
15%
#4D7C81
30%
#467276
45%
#3E6569
60%
#34575A
75%
#284548
Color harmonies for Cadetblue4
Classic color-theory harmonies derived from rotating the hue of Cadetblue4. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#53868B
#53868B
#8C5954
#8C5954
Triadic
Three colors 120° apart
#53868B
#53868B
#8C5488
#8C5488
#888C54
#888C54
Analogous
Two neighbors ±30° on the wheel
#548C75
#548C75
#53868B
#53868B
#546C8C
#546C8C
Split-complementary
Base + two colors flanking its complement
#53868B
#53868B
#8C546C
#8C546C
#8C7554
#8C7554
Tetradic
Two complementary pairs
#53868B
#53868B
#59548C
#59548C
#8C5954
#8C5954
#888C54
#888C54
Square
Four colors evenly spaced 90° apart
#53868B
#53868B
#75548C
#75548C
#8C5954
#8C5954
#6C8C54
#6C8C54
Cadetblue4 in every color space
Full conversion of Cadetblue4 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
#53868B
RGB
rgb(83, 134, 139)
CMYK
cmyk(40%, 4%, 0%, 45%)
HSL
hsl(185, 25%, 44%)
HSV
hsv(185, 40%, 55%)
HWB
hwb(185 33% 45%)
CIE Lab
lab(52.7 -15.7 -8.1)
OKLCH
oklch(58.6% 0.055 203.7)
XYZ (D65)
xyz(16.75, 20.75, 27.54)
Copy-ready code for Cadetblue4
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: #53868B;
background-color: #53868B;CSS variable
:root {
--color-cadetblue4: #53868B;
}Tailwind config
// tailwind.config.js
colors: {
'cadetblue4': '#53868B',
}Sass
$color-cadetblue4: #53868B;Swift UIColor
UIColor(red: 0.325, green: 0.525, blue: 0.545, alpha: 1.0)Android XML
<color name="cadetblue4">#53868B</color>Closest match in every color system
The nearest Cadetblue4 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 5018
#3F888F
Turquoise blue
RAL 5024
#5D9B9B
Pastel blue
RAL 5021
#256D7B
Water blue
RAL 7000
#7E8B92
Squirrel grey
RAL 7005
#6B716F
Mouse grey
RAL 7037
#7D7F7D
Dusty grey
FAQ about Cadetblue4
What is the HEX code for Cadetblue4?
Cadetblue4 (cadetblue4) has the HEX code #53868B. In RGB it is rgb(83, 134, 139), and in CMYK it is cmyk(40%, 4%, 0%, 45%).
What is the OKLCH value of Cadetblue4?
Cadetblue4 converts to oklch(0.586 0.055 203.7). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Cadetblue4 accessible for body text?
Used as a background, Cadetblue4 has a contrast ratio of 5.15:1 with black text and 4.08:1 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 Cadetblue4?
The closest Pantone reference to Cadetblue4 by ΔE2000 perceptual distance is Pantone 321 C (#008C95). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Cadetblue4?
The closest RAL Classic reference to Cadetblue4 by ΔE2000 distance is RAL 5018 (Turquoise blue, #3F888F). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Cadetblue4?
The complementary color (180° opposite on the HSL color wheel) of Cadetblue4 is #8C5954. 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.