#3778B4

#3778B4

Color Values

HEX

#3778B4

RGB

55, 120, 180

HSL

208.8, 53.2%, 46.1%

HSV

208.8, 69.4%, 70.6%

CMYK

69.4%, 33.3%, 0.0%, 29.4%

OKLCH

0.5586 0.1147 249.0

Properties

Cool Dark Nearest: RAL 5012 Light Blue

Color Harmonies

Complementary

#3778B4

#B47337

Analogous

#37B4B2

#373AB4

#3778B4

Triadic

#3778B4

#B43778

#78B437

Split Complementary

#3778B4

#B4373A

#B4B237

Tetradic

#3778B4

#B237B4

#B47337

#3AB437

Color Blindness Simulation

Original

#3778B4

Protanopia

#5354A5

Deuteranopia

#4F4AA2

Tritanopia

#3A9A98

Achromatopsia

#6F6F6F

CSS Usage

background-color: #3778B4;
color: #3778B4;
border-color: #3778B4;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F4F7FB
100
#E5EDF5
200
#C8DCEE
300
#A1C3E2
400
#6EA3D3
500
#3C82C3
600
#30689C
700
#26537D
800
#1E4162
900
#193148
950
#101F2D

Contrast Checker

Text on white

4.66:1

AA Pass AAA Fail

Text on black

4.51:1

AA Pass AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026