#1F239F

#1F239F

Color Values

HEX

#1F239F

RGB

31, 35, 159

HSL

238.1, 67.4%, 37.3%

HSV

238.1, 80.5%, 62.4%

CMYK

80.5%, 78.0%, 0.0%, 37.6%

OKLCH

0.3601 0.1917 270.3

Properties

Cool Dark Nearest: navy

Color Harmonies

Complementary

#1F239F

#9F9B1F

Analogous

#1F639F

#5B1F9F

#1F239F

Triadic

#1F239F

#9F1F23

#239F1F

Split Complementary

#1F239F

#9F5B1F

#639F1F

Tetradic

#1F239F

#9F1F63

#9F9B1F

#1F9F5B

Color Blindness Simulation

Original

#1F239F

Protanopia

#212181

Deuteranopia

#20207A

Tritanopia

#1F6964

Achromatopsia

#2B2B2B

CSS Usage

background-color: #1F239F;
color: #1F239F;
border-color: #1F239F;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F3F3FC
100
#E3E4F7
200
#C3C5F3
300
#999BEB
400
#6165E0
500
#2A2FD5
600
#2126AB
700
#1B1E89
800
#15186B
900
#13154E
950
#0C0D31

Contrast Checker

Text on white

11.67:1

AA Pass AAA Pass

Text on black

1.8:1

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