#101321

#101321

Color Values

HEX

#101321

RGB

16, 19, 33

HSL

229.4, 34.7%, 9.6%

HSV

229.4, 51.5%, 12.9%

CMYK

51.5%, 42.4%, 0.0%, 87.1%

OKLCH

0.1912 0.0288 274.1

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#101321

#211E10

Analogous

#101B21

#151021

#101321

Triadic

#101321

#211013

#132110

Split Complementary

#101321

#211510

#1B2110

Tetradic

#101321

#21101B

#211E10

#102115

Color Blindness Simulation

Original

#101321

Protanopia

#11111E

Deuteranopia

#11111D

Tritanopia

#101B1A

Achromatopsia

#131313

CSS Usage

background-color: #101321;
color: #101321;
border-color: #101321;
Nearest Tailwind: Gray 900 #111827

Tailwind Shades

50
#F5F6FA
100
#E8EAF2
200
#CFD3E8
300
#ADB4D7
400
#808BC1
500
#5363AC
600
#434F89
700
#353F6E
800
#2A3156
900
#212740
950
#151828

Contrast Checker

Text on white

18.47:1

AA Pass AAA Pass

Text on black

1.14:1

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