#21456B

#21456B

Color Values

HEX

#21456B

RGB

33, 69, 107

HSL

210.8, 52.9%, 27.5%

HSV

210.8, 69.2%, 42.0%

CMYK

69.2%, 35.5%, 0.0%, 58.0%

OKLCH

0.3832 0.0774 251.6

Properties

Cool Dark Nearest: RAL 5000 Violet Blue

Color Harmonies

Complementary

#21456B

#6B4721

Analogous

#216A6B

#22216B

#21456B

Triadic

#21456B

#6B2145

#456B21

Split Complementary

#21456B

#6B2221

#6A6B21

Tetradic

#21456B

#6B216A

#6B4721

#216B22

Color Blindness Simulation

Original

#21456B

Protanopia

#313162

Deuteranopia

#2E2C60

Tritanopia

#235B59

Achromatopsia

#404040

CSS Usage

background-color: #21456B;
color: #21456B;
border-color: #21456B;
Nearest Tailwind: Sky 900 #0C4A6E

Tailwind Shades

50
#F4F7FB
100
#E5EDF5
200
#C8DBEE
300
#A1C1E2
400
#6F9FD3
500
#3C7EC3
600
#30659C
700
#26507D
800
#1E3F61
900
#193048
950
#101E2D

Contrast Checker

Text on white

9.87:1

AA Pass AAA Pass

Text on black

2.13:1

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