#306C99

#306C99

Color Values

HEX

#306C99

RGB

48, 108, 153

HSL

205.7, 52.2%, 39.4%

HSV

205.7, 68.6%, 60.0%

CMYK

68.6%, 29.4%, 0.0%, 40.0%

OKLCH

0.5126 0.0947 243.9

Properties

Cool Dark Nearest: steelblue 4

Color Harmonies

Complementary

#306C99

#995D30

Analogous

#309991

#303899

#306C99

Triadic

#306C99

#99306C

#6C9930

Split Complementary

#306C99

#993038

#999130

Tetradic

#306C99

#913099

#995D30

#389930

Color Blindness Simulation

Original

#306C99

Protanopia

#4A4B8E

Deuteranopia

#46428C

Tritanopia

#338684

Achromatopsia

#626262

CSS Usage

background-color: #306C99;
color: #306C99;
border-color: #306C99;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F4F8FB
100
#E5EEF5
200
#C9DEEE
300
#A2C6E2
400
#6FA8D2
500
#3D89C2
600
#316E9B
700
#27587C
800
#1E4561
900
#1A3447
950
#10212D

Contrast Checker

Text on white

5.63:1

AA Pass AAA Fail

Text on black

3.73:1

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