#688BA6

#688BA6

Color Values

HEX

#688BA6

RGB

104, 139, 166

HSL

206,1, 25,8%, 52,9%

HSV

206,1, 37,3%, 65,1%

CMYK

37,3%, 16,3%, 0,0%, 34,9%

OKLCH

0,6206 0,0567 242,0

Properties

Cool Light Nearest: lightslategrey

Color Harmonies

Complementary

#688BA6

#A68368

Analogous

#68A6A2

#686CA6

#688BA6

Triadic

#688BA6

#A6688B

#8BA668

Split Complementary

#688BA6

#A6686C

#A6A268

Tetradic

#688BA6

#A268A6

#A68368

#6CA668

Color Blindness Simulation

Original

#688BA6

Protanopia

#77779F

Deuteranopia

#75729E

Tritanopia

#6A9A99

Achromatopsia

#868686

CSS Usage

background-color: #688BA6;
color: #688BA6;
border-color: #688BA6;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F8F9
100
#E9EEF1
200
#D2DCE5
300
#B2C4D2
400
#88A4B9
500
#5F84A0
600
#4C6980
700
#3D5467
800
#2F4250
900
#25323C
950
#172026

Contrast Checker

Text on white

3,6:1

AA Fail AAA Fail

Text on black

5,83:1

AA Pass 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