#1F2958

#1F2958

Color Values

HEX

#1F2958

RGB

31, 41, 88

HSL

229.5, 47.9%, 23.3%

HSV

229.5, 64.8%, 34.5%

CMYK

64.8%, 53.4%, 0.0%, 65.5%

OKLCH

0.3002 0.0852 271.4

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#1F2958

#584E1F

Analogous

#1F4558

#311F58

#1F2958

Triadic

#1F2958

#581F29

#29581F

Split Complementary

#1F2958

#58311F

#45581F

Tetradic

#1F2958

#581F45

#584E1F

#1F5831

Color Blindness Simulation

Original

#1F2958

Protanopia

#23234D

Deuteranopia

#23224A

Tritanopia

#204442

Achromatopsia

#2A2A2A

CSS Usage

background-color: #1F2958;
color: #1F2958;
border-color: #1F2958;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F4F5FA
100
#E6E8F4
200
#CAD0EC
300
#A4AFDF
400
#7383CE
500
#4258BD
600
#354697
700
#2B3879
800
#212C5E
900
#1C2345
950
#11162C

Contrast Checker

Text on white

13.85:1

AA Pass AAA Pass

Text on black

1.52:1

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