#1F517F

#1F517F

Color Values

HEX

#1F517F

RGB

31, 81, 127

HSL

208.8, 60.8%, 31.0%

HSV

208.8, 75.6%, 49.8%

CMYK

75.6%, 36.2%, 0.0%, 50.2%

OKLCH

0.4249 0.0934 249.4

Properties

Cool Dark Nearest: RAL 5019 Capri Blue

Color Harmonies

Complementary

#1F517F

#7F4D1F

Analogous

#1F7F7D

#1F217F

#1F517F

Triadic

#1F517F

#7F1F51

#517F1F

Split Complementary

#1F517F

#7F1F21

#7F7D1F

Tetradic

#1F517F

#7D1F7F

#7F4D1F

#217F1F

Color Blindness Simulation

Original

#1F517F

Protanopia

#353574

Deuteranopia

#322E71

Tritanopia

#226B69

Achromatopsia

#4A4A4A

CSS Usage

background-color: #1F517F;
color: #1F517F;
border-color: #1F517F;
Nearest Tailwind: Sky 800 #075985

Tailwind Shades

50
#F3F8FB
100
#E4EEF6
200
#C6DCF1
300
#9DC3E7
400
#67A3DA
500
#3283CD
600
#2868A4
700
#205483
800
#194167
900
#16324B
950
#0E1F2F

Contrast Checker

Text on white

8.26:1

AA Pass AAA Pass

Text on black

2.54:1

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