Skyblue4
skyblue4 · #4A708B
HEX
#4A708B
RGB
rgb(74, 112, 139)
CMYK
cmyk(47%, 19%, 0%, 45%)
HSL
hsl(205, 31%, 42%)
LAB
lab(45.5, -5.7, -19.0)
What is Skyblue4?
Skyblue4 is the skyblue4 reference in the X11 named colors. Its sRGB value is #4A708B (rgb 74, 112, 139). 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 Skyblue4 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Skyblue4
An 11-step tonal scale derived from Skyblue4 (#4A708B). 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
#F1F4F6
#F1F4F6
100
#E2E8EC
#E2E8EC
200
#C5D1DA
#C5D1DA
300
#A5B8C5
#A5B8C5
400
#7794A8
#7794A8
500
#4A708B
#4A708B
600
#3F5F76
#3F5F76
700
#30495A
#30495A
800
#21323F
#21323F
900
#131C23
#131C23
950
#090D11
#090D11
Lighter tints (mixed with white)
15%
#7E92A4
30%
#9FACB8
45%
#B9C2CA
60%
#D0D5DA
75%
#E3E6E9
Darker shades (mixed with black)
15%
#446881
30%
#3E5F76
45%
#375469
60%
#2E485A
75%
#233948
Color harmonies for Skyblue4
Classic color-theory harmonies derived from rotating the hue of Skyblue4. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#4A708B
#4A708B
#8C664A
#8C664A
Triadic
Three colors 120° apart
#4A708B
#4A708B
#8C4A71
#8C4A71
#718C4A
#718C4A
Analogous
Two neighbors ±30° on the wheel
#4A8C87
#4A8C87
#4A708B
#4A708B
#4A4F8C
#4A4F8C
Split-complementary
Base + two colors flanking its complement
#4A708B
#4A708B
#8C4A4F
#8C4A4F
#8C874A
#8C874A
Tetradic
Two complementary pairs
#4A708B
#4A708B
#664A8C
#664A8C
#8C664A
#8C664A
#718C4A
#718C4A
Square
Four colors evenly spaced 90° apart
#4A708B
#4A708B
#874A8C
#874A8C
#8C664A
#8C664A
#4F8C4A
#4F8C4A
Skyblue4 in every color space
Full conversion of Skyblue4 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
#4A708B
RGB
rgb(74, 112, 139)
CMYK
cmyk(47%, 19%, 0%, 45%)
HSL
hsl(205, 31%, 42%)
HSV
hsv(205, 47%, 55%)
HWB
hwb(205 29% 45%)
CIE Lab
lab(45.5 -5.7 -19.0)
OKLCH
oklch(52.8% 0.061 240.3)
XYZ (D65)
xyz(13.28, 14.91, 26.60)
Copy-ready code for Skyblue4
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: #4A708B;
background-color: #4A708B;CSS variable
:root {
--color-skyblue4: #4A708B;
}Tailwind config
// tailwind.config.js
colors: {
'skyblue4': '#4A708B',
}Sass
$color-skyblue4: #4A708B;Swift UIColor
UIColor(red: 0.290, green: 0.439, blue: 0.545, alpha: 1.0)Android XML
<color name="skyblue4">#4A708B</color>Closest match in every color system
The nearest Skyblue4 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 5015
#2271B3
Sky blue
RAL 5007
#3E5F8A
Brilliant blue
RAL 5014
#606E8C
Pigeon blue
RAL 5012
#3B83BD
Light blue
RAL 5021
#256D7B
Water blue
FAQ about Skyblue4
What is the HEX code for Skyblue4?
Skyblue4 (skyblue4) has the HEX code #4A708B. In RGB it is rgb(74, 112, 139), and in CMYK it is cmyk(47%, 19%, 0%, 45%).
What is the OKLCH value of Skyblue4?
Skyblue4 converts to oklch(0.528 0.061 240.3). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Skyblue4 accessible for body text?
Used as a background, Skyblue4 has a contrast ratio of 3.98:1 with black text and 5.27:1 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 Skyblue4?
The closest Pantone reference to Skyblue4 by ΔE2000 perceptual distance is Pantone 307 C (#0067A5). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Skyblue4?
The closest RAL Classic reference to Skyblue4 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 Skyblue4?
The complementary color (180° opposite on the HSL color wheel) of Skyblue4 is #8C664A. 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.