#1F2F61

#1F2F61

Color Values

HEX

#1F2F61

RGB

31, 47, 97

HSL

225.5, 51.6%, 25.1%

HSV

225.5, 68.0%, 38.0%

CMYK

68.0%, 51.5%, 0.0%, 62.0%

OKLCH

0.3212 0.0909 267.7

Properties

Cool Dark Nearest: RAL 5017 Traffic Blue

Color Harmonies

Complementary

#1F2F61

#61511F

Analogous

#1F5061

#301F61

#1F2F61

Triadic

#1F2F61

#611F2F

#2F611F

Split Complementary

#1F2F61

#61301F

#50611F

Tetradic

#1F2F61

#611F50

#61511F

#1F6130

Color Blindness Simulation

Original

#1F2F61

Protanopia

#262655

Deuteranopia

#252452

Tritanopia

#204B49

Achromatopsia

#2F2F2F

CSS Usage

background-color: #1F2F61;
color: #1F2F61;
border-color: #1F2F61;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F4F6FB
100
#E5E9F5
200
#C9D2EE
300
#A2B1E1
400
#7087D1
500
#3E5EC1
600
#314B9B
700
#273C7C
800
#1F2F61
900
#1A2547
950
#10172D

Contrast Checker

Text on white

12.82:1

AA Pass AAA Pass

Text on black

1.64:1

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