#1F124B

#1F124B

Color Values

HEX

#1F124B

RGB

31, 18, 75

HSL

253.7, 61.3%, 18.2%

HSV

253.7, 76.0%, 29.4%

CMYK

58.7%, 76.0%, 0.0%, 70.6%

OKLCH

0.2413 0.0994 286.9

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#1F124B

#3E4B12

Analogous

#12214B

#3B124B

#1F124B

Triadic

#1F124B

#4B1F12

#124B1F

Split Complementary

#1F124B

#4B3B12

#214B12

Tetradic

#1F124B

#4B1221

#3E4B12

#124B3B

Color Blindness Simulation

Original

#1F124B

Protanopia

#19193D

Deuteranopia

#1A1B3A

Tritanopia

#1E3230

Achromatopsia

#191919

CSS Usage

background-color: #1F124B;
color: #1F124B;
border-color: #1F124B;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F5F3FB
100
#E8E4F6
200
#CFC5F1
300
#AD9CE7
400
#8167DA
500
#5531CE
600
#4427A5
700
#362084
800
#2B1967
900
#22164B
950
#150E2F

Contrast Checker

Text on white

16.85:1

AA Pass AAA Pass

Text on black

1.25:1

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