#397FD0

#397FD0

Color Values

HEX

#397FD0

RGB

57, 127, 208

HSL

212.2, 61.6%, 52.0%

HSV

212.2, 72.6%, 81.6%

CMYK

72.6%, 38.9%, 0.0%, 18.4%

OKLCH

0.5916 0.1428 254.1

Properties

Cool Light Nearest: NCS S 1060-B Bright Blue

Color Harmonies

Complementary

#397FD0

#D08A39

Analogous

#39CAD0

#3F39D0

#397FD0

Triadic

#397FD0

#D0397F

#7FD039

Split Complementary

#397FD0

#D03F39

#CAD039

Tetradic

#397FD0

#D039CA

#D08A39

#39D03F

Color Blindness Simulation

Original

#397FD0

Protanopia

#5758BC

Deuteranopia

#534EB8

Tritanopia

#3CADAA

Achromatopsia

#767676

CSS Usage

background-color: #397FD0;
color: #397FD0;
border-color: #397FD0;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F3F7FB
100
#E4ECF6
200
#C5DAF1
300
#9CBFE7
400
#679CDB
500
#317ACE
600
#2761A5
700
#1F4E84
800
#183D67
900
#162E4B
950
#0E1D30

Contrast Checker

Text on white

4.1:1

AA Fail AAA Fail

Text on black

5.12:1

AA Pass AAA Fail

Related Articles

Tutorials

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

1월 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

1월 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

1월 15, 2026