#1F3D54

#1F3D54

Color Values

HEX

#1F3D54

RGB

31, 61, 84

HSL

206.0, 46.1%, 22.5%

HSV

206.0, 63.1%, 32.9%

CMYK

63.1%, 27.4%, 0.0%, 67.1%

OKLCH

0.3479 0.0541 243.4

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#1F3D54

#54361F

Analogous

#1F5450

#1F2254

#1F3D54

Triadic

#1F3D54

#541F3D

#3D541F

Split Complementary

#1F3D54

#541F22

#54501F

Tetradic

#1F3D54

#501F54

#54361F

#22541F

Color Blindness Simulation

Original

#1F3D54

Protanopia

#2C2C4E

Deuteranopia

#2A284D

Tritanopia

#204A49

Achromatopsia

#383838

CSS Usage

background-color: #1F3D54;
color: #1F3D54;
border-color: #1F3D54;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F4F8FA
100
#E6EEF4
200
#CBDDEC
300
#A6C6DE
400
#75A6CC
500
#4587BA
600
#376C95
700
#2C5777
800
#22445D
900
#1C3345
950
#12202B

Contrast Checker

Text on white

11.33:1

AA Pass AAA Pass

Text on black

1.85:1

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