#1F3963

#1F3963

Color Values

HEX

#1F3963

RGB

31, 57, 99

HSL

217.1, 52.3%, 25.5%

HSV

217.1, 68.7%, 38.8%

CMYK

68.7%, 42.4%, 0.0%, 61.2%

OKLCH

0.3469 0.0805 259.6

Properties

Cool Dark Nearest: RAL 5026 Pearl Night Blue

Color Harmonies

Complementary

#1F3963

#63491F

Analogous

#1F5B63

#271F63

#1F3963

Triadic

#1F3963

#631F39

#39631F

Split Complementary

#1F3963

#63271F

#5B631F

Tetradic

#1F3963

#631F5B

#63491F

#1F6327

Color Blindness Simulation

Original

#1F3963

Protanopia

#2A2A59

Deuteranopia

#292756

Tritanopia

#20514F

Achromatopsia

#373737

CSS Usage

background-color: #1F3963;
color: #1F3963;
border-color: #1F3963;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F4F7FB
100
#E5EBF5
200
#C9D7EE
300
#A2BAE2
400
#6F95D2
500
#3D70C2
600
#31599B
700
#27477C
800
#1E3861
900
#1A2B47
950
#101B2D

Contrast Checker

Text on white

11.52:1

AA Pass AAA Pass

Text on black

1.82:1

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