#151D28

#151D28

Color Values

HEX

#151D28

RGB

21, 29, 40

HSL

214.7, 31.1%, 12.0%

HSV

214.7, 47.5%, 15.7%

CMYK

47.5%, 27.5%, 0.0%, 84.3%

OKLCH

0.2283 0.0245 256.5

Properties

Cool Dark Nearest: RAL 5004 Black Blue

Color Harmonies

Complementary

#151D28

#282015

Analogous

#152728

#171528

#151D28

Triadic

#151D28

#28151D

#1D2815

Split Complementary

#151D28

#281715

#272815

Tetradic

#151D28

#281527

#282015

#152817

Color Blindness Simulation

Original

#151D28

Protanopia

#181925

Deuteranopia

#181725

Tritanopia

#152323

Achromatopsia

#1C1C1C

CSS Usage

background-color: #151D28;
color: #151D28;
border-color: #151D28;
Nearest Tailwind: Gray 900 #111827

Tailwind Shades

50
#F5F7F9
100
#E8ECF2
200
#D0DAE6
300
#AFBFD5
400
#839CBE
500
#5879A7
600
#466186
700
#384E6B
800
#2C3D54
900
#232E3E
950
#161D27

Contrast Checker

Text on white

16.96:1

AA Pass AAA Pass

Text on black

1.24:1

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