#5B657B

#5B657B

Color Values

HEX

#5B657B

RGB

91, 101, 123

HSL

221.2, 15.0%, 42.0%

HSV

221.2, 26.0%, 48.2%

CMYK

26.0%, 17.9%, 0.0%, 51.8%

OKLCH

0.5065 0.0372 265.9

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#5B657B

#7B715B

Analogous

#5B757B

#615B7B

#5B657B

Triadic

#5B657B

#7B5B65

#657B5B

Split Complementary

#5B657B

#7B615B

#757B5B

Tetradic

#5B657B

#7B5B75

#7B715B

#5B7B61

Color Blindness Simulation

Original

#5B657B

Protanopia

#5F5F76

Deuteranopia

#5F5E74

Tritanopia

#5C7171

Achromatopsia

#646464

CSS Usage

background-color: #5B657B;
color: #5B657B;
border-color: #5B657B;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F7F8
100
#EBECEF
200
#D6D9E1
300
#B9BECB
400
#929BAF
500
#6C7893
600
#576075
700
#454D5E
800
#363C49
900
#2A2E37
950
#1A1D23

Contrast Checker

Text on white

5.85:1

AA Pass AAA Fail

Text on black

3.59:1

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