#21233A

#21233A

Color Values

HEX

#21233A

RGB

33, 35, 58

HSL

235.2, 27.5%, 17.8%

HSV

235.2, 43.1%, 22.7%

CMYK

43.1%, 39.7%, 0.0%, 77.3%

OKLCH

0.2658 0.0429 279.2

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#21233A

#3A3821

Analogous

#212F3A

#2B213A

#21233A

Triadic

#21233A

#3A2123

#233A21

Split Complementary

#21233A

#3A2B21

#2F3A21

Tetradic

#21233A

#3A212F

#3A3821

#213A2B

Color Blindness Simulation

Original

#21233A

Protanopia

#222234

Deuteranopia

#222233

Tritanopia

#21302F

Achromatopsia

#242424

CSS Usage

background-color: #21233A;
color: #21233A;
border-color: #21233A;
Nearest Tailwind: Slate 800 #1E293B

Tailwind Shades

50
#F6F6F9
100
#E9EAF1
200
#D1D3E5
300
#B1B4D3
400
#878BBB
500
#5C62A3
600
#4A4E82
700
#3B3F68
800
#2E3151
900
#24263C
950
#171826

Contrast Checker

Text on white

15.37:1

AA Pass AAA Pass

Text on black

1.37:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026