#1F55AB

#1F55AB

Color Values

HEX

#1F55AB

RGB

31, 85, 171

HSL

216.9, 69.3%, 39.6%

HSV

216.9, 81.9%, 67.1%

CMYK

81.9%, 50.3%, 0.0%, 32.9%

OKLCH

0.4647 0.1493 259.6

Properties

Cool Dark Nearest: NCS S 2060-B Deep Blue

Color Harmonies

Complementary

#1F55AB

#AB751F

Analogous

#1F9BAB

#2F1FAB

#1F55AB

Triadic

#1F55AB

#AB1F55

#55AB1F

Split Complementary

#1F55AB

#AB2F1F

#9BAB1F

Tetradic

#1F55AB

#AB1F9B

#AB751F

#1FAB2F

Color Blindness Simulation

Original

#1F55AB

Protanopia

#363796

Deuteranopia

#332F91

Tritanopia

#228682

Achromatopsia

#505050

CSS Usage

background-color: #1F55AB;
color: #1F55AB;
border-color: #1F55AB;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F3F6FC
100
#E3EBF8
200
#C3D6F4
300
#97B8EC
400
#5F92E2
500
#276BD8
600
#1F56AD
700
#19458A
800
#14366C
900
#12294F
950
#0C1A32

Contrast Checker

Text on white

7.13:1

AA Pass AAA Pass

Text on black

2.95:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026