#255999

#255999

Color Values

HEX

#255999

RGB

37, 89, 153

HSL

213.1, 61.1%, 37.3%

HSV

213.1, 75.8%, 60.0%

CMYK

75.8%, 41.8%, 0.0%, 40.0%

OKLCH

0.463 0.118 255.3

Properties

Cool Dark Nearest: dodgerblue 4

Color Harmonies

Complementary

#255999

#996525

Analogous

#259399

#2B2599

#255999

Triadic

#255999

#992559

#599925

Split Complementary

#255999

#992B25

#939925

Tetradic

#255999

#992593

#996525

#25992B

Color Blindness Simulation

Original

#255999

Protanopia

#3C3C8A

Deuteranopia

#383586

Tritanopia

#287D7B

Achromatopsia

#535353

CSS Usage

background-color: #255999;
color: #255999;
border-color: #255999;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F3F7FB
100
#E4ECF6
200
#C5D9F1
300
#9CBEE7
400
#679BDA
500
#3277CD
600
#2860A4
700
#204C83
800
#193C67
900
#162E4B
950
#0E1D2F

Contrast Checker

Text on white

7.08:1

AA Pass AAA Pass

Text on black

2.97:1

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