#333B99

#333B99

Color Values

HEX

#333B99

RGB

51, 59, 153

HSL

235.3, 50.0%, 40.0%

HSV

235.3, 66.7%, 60.0%

CMYK

66.7%, 61.4%, 0.0%, 40.0%

OKLCH

0.4055 0.1516 273.8

Properties

Cool Dark Nearest: slateblue 4

Color Harmonies

Complementary

#333B99

#999133

Analogous

#336E99

#5E3399

#333B99

Triadic

#333B99

#99333B

#3B9933

Split Complementary

#333B99

#995E33

#6E9933

Tetradic

#333B99

#99336E

#999133

#33995E

Color Blindness Simulation

Original

#333B99

Protanopia

#363782

Deuteranopia

#36357D

Tritanopia

#33706C

Achromatopsia

#404040

CSS Usage

background-color: #333B99;
color: #333B99;
border-color: #333B99;
Nearest Tailwind: Indigo 900 #312E81

Tailwind Shades

50
#F4F5FB
100
#E6E7F5
200
#C9CCED
300
#A3A8E0
400
#7179D0
500
#404ABF
600
#333B99
700
#292F7A
800
#202560
900
#1B1E46
950
#11132C

Contrast Checker

Text on white

9.43:1

AA Pass AAA Pass

Text on black

2.23:1

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