#1F1F9D

#1F1F9D

Color Values

HEX

#1F1F9D

RGB

31, 31, 157

HSL

240.0, 67.0%, 36.9%

HSV

240.0, 80.3%, 61.6%

CMYK

80.3%, 80.3%, 0.0%, 38.4%

OKLCH

0.3525 0.1929 270.8

Properties

Cool Dark Nearest: darkblue

Color Harmonies

Complementary

#1F1F9D

#9D9D1F

Analogous

#1F5E9D

#5E1F9D

#1F1F9D

Triadic

#1F1F9D

#9D1F1F

#1F9D1F

Split Complementary

#1F1F9D

#9D5E1F

#5E9D1F

Tetradic

#1F1F9D

#9D1F5E

#9D9D1F

#1F9D5E

Color Blindness Simulation

Original

#1F1F9D

Protanopia

#1F1F7F

Deuteranopia

#1F1F77

Tritanopia

#1F6661

Achromatopsia

#282828

CSS Usage

background-color: #1F1F9D;
color: #1F1F9D;
border-color: #1F1F9D;
Nearest Tailwind: Indigo 800 #3730A3

Tailwind Shades

50
#F3F3FC
100
#E3E3F7
200
#C3C3F3
300
#9999EB
400
#6161E0
500
#2A2AD5
600
#2222AA
700
#1B1B88
800
#15156A
900
#13134E
950
#0C0C31

Contrast Checker

Text on white

12.06:1

AA Pass AAA Pass

Text on black

1.74:1

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