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#3779A0 Color

#3779A0 is rgb(55, 121, 160) in RGB, hsl(202, 49%, 42%) in HSL, and about cmyk(66%, 24%, 0%, 37%) in CMYK. It has no registered color name of its own — the closest is Cerulean (#007BA7), clearly related but distinguishable side by side at ΔE 6.66. White text is the more readable choice on this background.

#3779A0
HEX#3779A0
RGBrgb(55, 121, 160)
HSLhsl(202, 49%, 42%)
HSVhsv(202, 66%, 63%)
CMYKcmyk(66%, 24%, 0%, 37%)
OKLCHoklch(55% 0.09 237.5)
LABlab(47.86% -12.11 -27.73)
LCHlch(47.86% 30.26 246.40)

What #3779A0 Is Called

Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #3779A0, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Cerulean#007BA7ΔE 6.66Steel Blue#4682B4ΔE 7.56Sea Blue#006994ΔE 7.82Queen Blue#436B95ΔE 8.47Air Force Blue#5D8AA8ΔE 10.13Silver Lake Blue#5D89BAΔE 10.83

Browse the full index of named colors A-Z or every blue in the library.

#3779A0 Channel Values

How #3779A0 breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

ModelChannelsNotes
RGBR 55 · G 121 · B 1608-bit channels as sent to the display
HSLH 202° · S 49% · L 42%Easiest model for building lighter and darker variants
HSVH 202° · S 66% · V 63%Matches the picker in most design tools
CMYKC 66% · M 24% · Y 0% · K 37%Approximate ink mix; confirm with an ICC profile before printing
Luminance4.77:1 vs white · 4.41:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #3779A0 background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

TextWhite text4.77:1AA normal AA large AAA normal
Fails AABlack text4.41:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #3779A0 in the contrast checker.

Colors That Go With #3779A0

Pairings derived from color-wheel relationships. The complementary color sits opposite #3779A0; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#3779A0
Complementary
#A05D37
Analogous
#37A092
Analogous
#3745A0
Triadic
#A03779
Triadic
#79A037
Split comp.
#A03745
Split comp.
#A09237

Tints & Shades of #3779A0

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

#4190BE
#5FA2C8
#7EB4D3
#9CC5DD
#BBD7E8
#D9E9F2

Shades

#306B8D
#285976
#224B63
#1A3A4C
#142B39
#0C1A22

Want a full 50-950 ramp with semantic roles? Generate design tokens from #3779A0.

How #3779A0 Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#3779A0
Protanopia#7171A0
Protanomaly#5F74A0
Deuteranopia#6969A1
Deuteranomaly#5970A1
Tritanopia#247F7F
Tritanomaly#2D7D8D
Achromatopsia#737373

Test a full palette in the color blindness simulator.

Using #3779A0 in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--color-3779a0: #3779A0;
CSS backgroundbackground-color: #3779A0;
Tailwind configcolors: { 'color-3779a0': '#3779A0' }
SwiftUIColor(red: 0.216, green: 0.475, blue: 0.627)
Android XML<color name="color_3779a0">#3779A0</color>
SVG fillfill="#3779A0"

More Blue Colors

#3779A0 sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#3779A0 Frequently Asked Questions

What color is #3779A0?

#3779A0 is a mid-tone blue — rgb(55, 121, 160) in RGB and hsl(202, 49%, 42%) in HSL. It carries no registered color name of its own; the closest named color is Cerulean (#007BA7), which is clearly related but distinguishable side by side at a CIE76 distance of 6.66.

What is the RGB value of #3779A0?

#3779A0 is rgb(55, 121, 160) — red 55, green 121, and blue 160 on the 0-255 scale.

What is the CMYK value of #3779A0?

#3779A0 converts to approximately cmyk(66%, 24%, 0%, 37%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #3779A0 be black or white?

White text is the more readable choice. #3779A0 scores 4.77:1 against white and 4.41:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #3779A0 as a CSS color keyword?

No. #3779A0 is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is steelblue (#4682B4) at a CIE76 distance of 7.56, which is clearly related but distinguishable side by side.

Open #3779A0 in a Tool

Hex to RGBHex to HSLHex to CMYKHex to OKLCHHex to PantoneBuild a paletteMake a gradient

Keep exploring: every blue in the color library, the guide to shades of blue, or the full color library.