#378BE2

#378BE2

Color Values

HEX

#378BE2

RGB

55, 139, 226

HSL

210.5, 74.7%, 55.1%

HSV

210.5, 75.7%, 88.6%

CMYK

75.7%, 38.5%, 0.0%, 11.4%

OKLCH

0.6284 0.1539 252.3

Properties

Cool Light Nearest: cornflowerblue

Color Harmonies

Complementary

#378BE2

#E28E37

Analogous

#37E1E2

#3837E2

#378BE2

Triadic

#378BE2

#E2378B

#8BE237

Split Complementary

#378BE2

#E23837

#E1E237

Tetradic

#378BE2

#E237E1

#E28E37

#37E238

Color Blindness Simulation

Original

#378BE2

Protanopia

#5B5CCD

Deuteranopia

#5650C8

Tritanopia

#3BBCB9

Achromatopsia

#7F7F7F

CSS Usage

background-color: #378BE2;
color: #378BE2;
border-color: #378BE2;
Nearest Tailwind: Blue 400 #60A5FA

Tailwind Shades

50
#F2F7FC
100
#E2EDF8
200
#C1DBF6
300
#94C1F0
400
#5A9FE7
500
#207EDF
600
#1A65B2
700
#15518F
800
#103F6F
900
#103051
950
#0A1E33

Contrast Checker

Text on white

3.53:1

AA Fail AAA Fail

Text on black

5.95:1

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