#003F7D

#003F7D

Color Values

HEX

#003F7D

RGB

0, 63, 125

HSL

209.8, 100.0%, 24.5%

HSV

209.8, 100.0%, 49.0%

CMYK

100.0%, 49.6%, 0.0%, 51.0%

OKLCH

0.3715 0.1196 254.3

Properties

Cool Dark Nearest: RAL 5017 Traffic Blue

Color Harmonies

Complementary

#003F7D

#7D3E00

Analogous

#007D7D

#00007D

#003F7D

Triadic

#003F7D

#7D003F

#3F7D00

Split Complementary

#003F7D

#7D0000

#7D7D00

Tetradic

#003F7D

#7D007D

#7D3E00

#007D00

Color Blindness Simulation

Original

#003F7D

Protanopia

#1B1C6E

Deuteranopia

#18136A

Tritanopia

#036260

Achromatopsia

#363636

CSS Usage

background-color: #003F7D;
color: #003F7D;
border-color: #003F7D;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F1F7FE
100
#DEEDFC
200
#B8DCFF
300
#85C2FF
400
#42A1FF
500
#0080FF
600
#0067CC
700
#0052A3
800
#004080
900
#05315C
950
#031F3A

Contrast Checker

Text on white

10.46:1

AA Pass AAA Pass

Text on black

2.01:1

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