Steelblue3
steelblue3 · #4F94CD
HEX
#4F94CD
RGB
rgb(79, 148, 205)
CMYK
cmyk(61%, 28%, 0%, 20%)
HSL
hsl(207, 56%, 56%)
LAB
lab(59.2, -4.5, -35.8)
What is Steelblue3?
Steelblue3 is the steelblue3 reference in the X11 named colors. Its sRGB value is #4F94CD (rgb 79, 148, 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 Steelblue3 as a background.
Black text on this color
White text on this color
Shades, tints & tonal scale of Steelblue3
An 11-step tonal scale derived from Steelblue3 (#4F94CD). 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
#F1F6FB
#F1F6FB
100
#E3EEF7
#E3EEF7
200
#C7DDEF
#C7DDEF
300
#A7CAE6
#A7CAE6
400
#7BAFDA
#7BAFDA
500
#4F94CD
#4F94CD
600
#437EAE
#437EAE
700
#336085
#336085
800
#24435C
#24435C
900
#142533
#142533
950
#091219
#091219
Lighter tints (mixed with white)
15%
#80AAD6
30%
#A1BDDE
45%
#BACDE5
60%
#D0DCED
75%
#E3EAF4
Darker shades (mixed with black)
15%
#4989BF
30%
#427EAF
45%
#3A709D
60%
#316187
75%
#264D6D
Color harmonies for Steelblue3
Classic color-theory harmonies derived from rotating the hue of Steelblue3. Use these to build accent palettes, brand systems, and accessible UI color pairings.
Complementary
180° opposite — strongest contrast
#4F94CD
#4F94CD
#CE8950
#CE8950
Triadic
Three colors 120° apart
#4F94CD
#4F94CD
#CE5095
#CE5095
#95CE50
#95CE50
Analogous
Two neighbors ±30° on the wheel
#50CEC7
#50CEC7
#4F94CD
#4F94CD
#5056CE
#5056CE
Split-complementary
Base + two colors flanking its complement
#4F94CD
#4F94CD
#CE5056
#CE5056
#CEC750
#CEC750
Tetradic
Two complementary pairs
#4F94CD
#4F94CD
#8950CE
#8950CE
#CE8950
#CE8950
#95CE50
#95CE50
Square
Four colors evenly spaced 90° apart
#4F94CD
#4F94CD
#C750CE
#C750CE
#CE8950
#CE8950
#56CE50
#56CE50
Steelblue3 in every color space
Full conversion of Steelblue3 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
#4F94CD
RGB
rgb(79, 148, 205)
CMYK
cmyk(61%, 28%, 0%, 20%)
HSL
hsl(207, 56%, 56%)
HSV
hsv(207, 61%, 80%)
HWB
hwb(207 31% 20%)
CIE Lab
lab(59.2 -4.5 -35.8)
OKLCH
oklch(64.6% 0.111 245.6)
XYZ (D65)
xyz(24.83, 27.25, 61.70)
Copy-ready code for Steelblue3
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: #4F94CD;
background-color: #4F94CD;CSS variable
:root {
--color-steelblue3: #4F94CD;
}Tailwind config
// tailwind.config.js
colors: {
'steelblue3': '#4F94CD',
}Sass
$color-steelblue3: #4F94CD;Swift UIColor
UIColor(red: 0.310, green: 0.580, blue: 0.804, alpha: 1.0)Android XML
<color name="steelblue3">#4F94CD</color>Closest match in every color system
The nearest Steelblue3 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 5012
#3B83BD
Light blue
RAL 5015
#2271B3
Sky blue
RAL 7000
#7E8B92
Squirrel grey
RAL 7001
#8F999F
Silver grey
RAL 5014
#606E8C
Pigeon blue
RAL 5018
#3F888F
Turquoise blue
FAQ about Steelblue3
What is the HEX code for Steelblue3?
Steelblue3 (steelblue3) has the HEX code #4F94CD. In RGB it is rgb(79, 148, 205), and in CMYK it is cmyk(61%, 28%, 0%, 20%).
What is the OKLCH value of Steelblue3?
Steelblue3 converts to oklch(0.646 0.111 245.6). OKLCH is the perceptually uniform color space used by Tailwind v4 and CSS Color Module Level 4.
Is Steelblue3 accessible for body text?
Used as a background, Steelblue3 has a contrast ratio of 6.45:1 with black text and 3.26:1 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 Steelblue3?
The closest Pantone reference to Steelblue3 by ΔE2000 perceptual distance is Pantone Process Blue U (#008EC9). Cross-system Pantone matching is approximate; for color-critical print work, verify with a physical Pantone guide.
What is the closest RAL color to Steelblue3?
The closest RAL Classic reference to Steelblue3 by ΔE2000 distance is RAL 5012 (Light blue, #3B83BD). RAL is a German industrial coating standard commonly used for paint, powder coat, and architectural specification.
What is the complementary color of Steelblue3?
The complementary color (180° opposite on the HSL color wheel) of Steelblue3 is #CE8950. 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.