#688CA3

#688CA3

Color Values

HEX

#688CA3

RGB

104, 140, 163

HSL

203.4, 24.3%, 52.4%

HSV

203.4, 36.2%, 63.9%

CMYK

36.2%, 14.1%, 0.0%, 36.1%

OKLCH

0.6217 0.0532 236.8

Properties

Cool Light Nearest: lightslategrey

Color Harmonies

Complementary

#688CA3

#A37F68

Analogous

#68A39D

#686FA3

#688CA3

Triadic

#688CA3

#A3688C

#8CA368

Split Complementary

#688CA3

#A3686F

#A39D68

Tetradic

#688CA3

#9D68A3

#A37F68

#6FA368

Color Blindness Simulation

Original

#688CA3

Protanopia

#78789D

Deuteranopia

#76739C

Tritanopia

#6A9998

Achromatopsia

#868686

CSS Usage

background-color: #688CA3;
color: #688CA3;
border-color: #688CA3;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F8F9
100
#E9EEF1
200
#D3DDE4
300
#B3C5D1
400
#8AA6B8
500
#61869E
600
#4D6B7F
700
#3E5665
800
#30434F
900
#26333B
950
#182025

Contrast Checker

Text on white

3.58:1

AA Fail AAA Fail

Text on black

5.87:1

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