#1F2458

#1F2458

Color Values

HEX

#1F2458

RGB

31, 36, 88

HSL

234.7, 47.9%, 23.3%

HSV

234.7, 64.8%, 34.5%

CMYK

64.8%, 59.1%, 0.0%, 65.5%

OKLCH

0.2889 0.0927 274.9

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#1F2458

#58531F

Analogous

#1F4058

#361F58

#1F2458

Triadic

#1F2458

#581F24

#24581F

Split Complementary

#1F2458

#58361F

#40581F

Tetradic

#1F2458

#581F40

#58531F

#1F5836

Color Blindness Simulation

Original

#1F2458

Protanopia

#21214B

Deuteranopia

#212048

Tritanopia

#1F413F

Achromatopsia

#272727

CSS Usage

background-color: #1F2458;
color: #1F2458;
border-color: #1F2458;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F4F5FA
100
#E6E7F4
200
#CACDEC
300
#A4AADF
400
#737BCE
500
#424DBD
600
#353E97
700
#2B3179
800
#21275E
900
#1C1F45
950
#11142C

Contrast Checker

Text on white

14.47:1

AA Pass AAA Pass

Text on black

1.45:1

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