#63777B

#63777B

Color Values

HEX

#63777B

RGB

99, 119, 123

HSL

190.0, 10.8%, 43.5%

HSV

190.0, 19.5%, 48.2%

CMYK

19.5%, 3.3%, 0.0%, 51.8%

OKLCH

0.5545 0.0244 211.1

Properties

Cool Dark Nearest: lightblue 4

Color Harmonies

Complementary

#63777B

#7B6763

Analogous

#637B73

#636B7B

#63777B

Triadic

#63777B

#7B6377

#777B63

Split Complementary

#63777B

#7B636B

#7B7363

Tetradic

#63777B

#73637B

#7B6763

#6B7B63

Color Blindness Simulation

Original

#63777B

Protanopia

#6C6C7A

Deuteranopia

#6A697A

Tritanopia

#647979

Achromatopsia

#737373

CSS Usage

background-color: #63777B;
color: #63777B;
border-color: #63777B;
Nearest Tailwind: Neutral 500 #737373

Tailwind Shades

50
#F7F8F8
100
#ECEEEF
200
#D7DEDF
300
#BBC6C8
400
#96A7AB
500
#72898D
600
#5B6D71
700
#49575A
800
#394447
900
#2C3435
950
#1C2122

Contrast Checker

Text on white

4.71:1

AA Pass AAA Fail

Text on black

4.46:1

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