#101F3F

#101F3F

Color Values

HEX

#101F3F

RGB

16, 31, 63

HSL

220.9, 59.5%, 15.5%

HSV

220.9, 74.6%, 24.7%

CMYK

74.6%, 50.8%, 0.0%, 75.3%

OKLCH

0.2459 0.0643 263.5

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#101F3F

#3F3010

Analogous

#10363F

#19103F

#101F3F

Triadic

#101F3F

#3F101F

#1F3F10

Split Complementary

#101F3F

#3F1910

#363F10

Tetradic

#101F3F

#3F1036

#3F3010

#103F19

Color Blindness Simulation

Original

#101F3F

Protanopia

#161737

Deuteranopia

#161435

Tritanopia

#113130

Achromatopsia

#1E1E1E

CSS Usage

background-color: #101F3F;
color: #101F3F;
border-color: #101F3F;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F3F6FB
100
#E4EAF6
200
#C6D4F1
300
#9DB5E6
400
#698CD9
500
#3464CB
600
#2950A3
700
#214082
800
#1A3266
900
#17274A
950
#0E192F

Contrast Checker

Text on white

16.28:1

AA Pass AAA Pass

Text on black

1.29:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026