#1F102F

#1F102F

Color Values

HEX

#1F102F

RGB

31, 16, 47

HSL

269.0, 49.2%, 12.4%

HSV

269.0, 66.0%, 18.4%

CMYK

34.0%, 66.0%, 0.0%, 81.6%

OKLCH

0.212 0.0608 304.0

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#1F102F

#202F10

Analogous

#10112F

#2F102F

#1F102F

Triadic

#1F102F

#2F1F10

#102F1F

Split Complementary

#1F102F

#2F2F10

#112F10

Tetradic

#1F102F

#2F1011

#202F10

#102F2F

Color Blindness Simulation

Original

#1F102F

Protanopia

#191828

Deuteranopia

#191A26

Tritanopia

#1E2220

Achromatopsia

#151515

CSS Usage

background-color: #1F102F;
color: #1F102F;
border-color: #1F102F;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F7F4FB
100
#EDE6F5
200
#DBCAED
300
#C1A4E0
400
#9F72CF
500
#7D41BE
600
#643498
700
#50297A
800
#3F205F
900
#301B46
950
#1E112C

Contrast Checker

Text on white

17.9:1

AA Pass AAA Pass

Text on black

1.17:1

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