#01052B

#01052B

Color Values

HEX

#01052B

RGB

1, 5, 43

HSL

234.3, 95.5%, 8.6%

HSV

234.3, 97.7%, 16.9%

CMYK

97.7%, 88.4%, 0.0%, 83.1%

OKLCH

0.1489 0.0783 265.6

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#01052B

#2B2701

Analogous

#011A2B

#12012B

#01052B

Triadic

#01052B

#2B0105

#052B01

Split Complementary

#01052B

#2B1201

#1A2B01

Tetradic

#01052B

#2B011A

#2B2701

#012B12

Color Blindness Simulation

Original

#01052B

Protanopia

#030322

Deuteranopia

#020220

Tritanopia

#011B19

Achromatopsia

#070707

CSS Usage

background-color: #01052B;
color: #01052B;
border-color: #01052B;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F1F2FE
100
#DFE1FC
200
#B9C0FD
300
#8792FC
400
#4758FB
500
#061DF9
600
#0517C7
700
#0412A0
800
#030E7D
900
#070F5A
950
#040939

Contrast Checker

Text on white

19.85:1

AA Pass AAA Pass

Text on black

1.06:1

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