#191B3D

#191B3D

Color Values

HEX

#191B3D

RGB

25, 27, 61

HSL

236.7, 41.9%, 16.9%

HSV

236.7, 59.0%, 23.9%

CMYK

59.0%, 55.7%, 0.0%, 76.1%

OKLCH

0.2409 0.0639 277.9

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#191B3D

#3D3B19

Analogous

#192D3D

#29193D

#191B3D

Triadic

#191B3D

#3D191B

#1B3D19

Split Complementary

#191B3D

#3D2919

#2D3D19

Tetradic

#191B3D

#3D192D

#3D3B19

#193D29

Color Blindness Simulation

Original

#191B3D

Protanopia

#1A1A35

Deuteranopia

#1A1A33

Tritanopia

#192E2D

Achromatopsia

#1D1D1D

CSS Usage

background-color: #191B3D;
color: #191B3D;
border-color: #191B3D;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F5F5FA
100
#E7E7F4
200
#CCCEEA
300
#A8ABDB
400
#797DC8
500
#4A50B5
600
#3B4091
700
#2F3374
800
#25285A
900
#1E2043
950
#13142A

Contrast Checker

Text on white

16.59:1

AA Pass AAA Pass

Text on black

1.27:1

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