#3978AD

#3978AD

Color Values

HEX

#3978AD

RGB

57, 120, 173

HSL

207.4, 50.4%, 45.1%

HSV

207.4, 67.1%, 67.8%

CMYK

67.1%, 30.6%, 0.0%, 32.2%

OKLCH

0.5555 0.1051 246.6

Properties

Cool Dark Nearest: steelblue

Color Harmonies

Complementary

#3978AD

#AD6E39

Analogous

#39ADA8

#393EAD

#3978AD

Triadic

#3978AD

#AD3978

#78AD39

Split Complementary

#3978AD

#AD393E

#ADA839

Tetradic

#3978AD

#A839AD

#AD6E39

#3EAD39

Color Blindness Simulation

Original

#3978AD

Protanopia

#5455A0

Deuteranopia

#514C9D

Tritanopia

#3C9694

Achromatopsia

#6E6E6E

CSS Usage

background-color: #3978AD;
color: #3978AD;
border-color: #3978AD;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F4F8FB
100
#E6EEF5
200
#C9DDED
300
#A3C4E1
400
#71A5D0
500
#3F85C0
600
#336A99
700
#28557B
800
#204360
900
#1A3246
950
#11202C

Contrast Checker

Text on white

4.7:1

AA Pass AAA Fail

Text on black

4.46:1

AA Fail 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