#1F3E55

#1F3E55

Color Values

HEX

#1F3E55

RGB

31, 62, 85

HSL

205.6, 46.6%, 22.7%

HSV

205.6, 63.5%, 33.3%

CMYK

63.5%, 27.1%, 0.0%, 66.7%

OKLCH

0.3511 0.0547 242.6

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#1F3E55

#55361F

Analogous

#1F5551

#1F2355

#1F3E55

Triadic

#1F3E55

#551F3E

#3E551F

Split Complementary

#1F3E55

#551F23

#55511F

Tetradic

#1F3E55

#511F55

#55361F

#23551F

Color Blindness Simulation

Original

#1F3E55

Protanopia

#2C2D4F

Deuteranopia

#2B284E

Tritanopia

#214B4A

Achromatopsia

#393939

CSS Usage

background-color: #1F3E55;
color: #1F3E55;
border-color: #1F3E55;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F4F8FA
100
#E6EEF4
200
#CBDEEC
300
#A5C6DE
400
#75A7CD
500
#4488BB
600
#366D96
700
#2C5778
800
#22445D
900
#1C3345
950
#12202B

Contrast Checker

Text on white

11.18:1

AA Pass AAA Pass

Text on black

1.88:1

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