#00366B

#00366B

Color Values

HEX

#00366B

RGB

0, 54, 107

HSL

209,7, 100,0%, 21,0%

HSV

209,7, 100,0%, 42,0%

CMYK

100,0%, 49,5%, 0,0%, 58,0%

OKLCH

0,3349 0,1058 253,8

Properties

Cool Dark Nearest: RAL 5017 Traffic Blue

Color Harmonies

Complementary

#00366B

#6B3500

Analogous

#006B6B

#00016B

#00366B

Triadic

#00366B

#6B0036

#366B00

Split Complementary

#00366B

#6B0001

#6B6B00

Tetradic

#00366B

#6B006B

#6B3500

#016B00

Color Blindness Simulation

Original

#00366B

Protanopia

#17185E

Deuteranopia

#14105B

Tritanopia

#035452

Achromatopsia

#2E2E2E

CSS Usage

background-color: #00366B;
color: #00366B;
border-color: #00366B;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F1F7FE
100
#DEEDFC
200
#B8DCFF
300
#85C2FF
400
#42A2FF
500
#0081FF
600
#0067CC
700
#0052A3
800
#004080
900
#05315C
950
#031F3A

Contrast Checker

Text on white

12,07:1

AA Pass AAA Pass

Text on black

1,74:1

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