#303B4B

#303B4B

Color Values

HEX

#303B4B

RGB

48, 59, 75

HSL

215.6, 22.0%, 24.1%

HSV

215.6, 36.0%, 29.4%

CMYK

36.0%, 21.3%, 0.0%, 70.6%

OKLCH

0.3492 0.0317 257.7

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#303B4B

#4B4030

Analogous

#30484B

#32304B

#303B4B

Triadic

#303B4B

#4B303B

#3B4B30

Split Complementary

#303B4B

#4B3230

#484B30

Tetradic

#303B4B

#4B3048

#4B4030

#304B32

Color Blindness Simulation

Original

#303B4B

Protanopia

#353547

Deuteranopia

#343346

Tritanopia

#314443

Achromatopsia

#3A3A3A

CSS Usage

background-color: #303B4B;
color: #303B4B;
border-color: #303B4B;
Nearest Tailwind: Gray 700 #374151

Tailwind Shades

50
#F6F7F9
100
#EAEDF0
200
#D3DAE3
300
#B4BFCF
400
#8C9DB5
500
#637A9C
600
#50627C
700
#404E64
800
#323D4E
900
#272F3A
950
#191D25

Contrast Checker

Text on white

11.33:1

AA Pass AAA Pass

Text on black

1.85:1

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