#283369

#283369

Color Values

HEX

#283369

RGB

40, 51, 105

HSL

229.8, 44.8%, 28.4%

HSV

229.8, 61.9%, 41.2%

CMYK

61.9%, 51.4%, 0.0%, 58.8%

OKLCH

0.3424 0.0947 271.9

Properties

Cool Dark Nearest: RAL 5017 Traffic Blue

Color Harmonies

Complementary

#283369

#695E28

Analogous

#285369

#3D2869

#283369

Triadic

#283369

#692833

#336928

Split Complementary

#283369

#693D28

#536928

Tetradic

#283369

#692853

#695E28

#28693D

Color Blindness Simulation

Original

#283369

Protanopia

#2D2D5C

Deuteranopia

#2C2B59

Tritanopia

#29524F

Achromatopsia

#353535

CSS Usage

background-color: #283369;
color: #283369;
border-color: #283369;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F4F5FA
100
#E6E9F4
200
#CBD1EB
300
#A6B0DD
400
#7685CB
500
#465AB9
600
#384894
700
#2D3976
800
#232D5C
900
#1D2444
950
#12162B

Contrast Checker

Text on white

11.88:1

AA Pass AAA Pass

Text on black

1.77:1

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