#256BB1

#256BB1

Color Values

HEX

#256BB1

RGB

37, 107, 177

HSL

210.0, 65.4%, 42.0%

HSV

210.0, 79.1%, 69.4%

CMYK

79.1%, 39.5%, 0.0%, 30.6%

OKLCH

0.5206 0.1302 251.9

Properties

Cool Dark Nearest: RAL 5015 Sky Blue

Color Harmonies

Complementary

#256BB1

#B16B25

Analogous

#25B1B1

#2525B1

#256BB1

Triadic

#256BB1

#B1256B

#6BB125

Split Complementary

#256BB1

#B12525

#B1B125

Tetradic

#256BB1

#B125B1

#B16B25

#25B125

Color Blindness Simulation

Original

#256BB1

Protanopia

#4344A0

Deuteranopia

#3F3A9C

Tritanopia

#289390

Achromatopsia

#616161

CSS Usage

background-color: #256BB1;
color: #256BB1;
border-color: #256BB1;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F3F7FC
100
#E3EDF7
200
#C4DBF3
300
#9AC2EA
400
#63A1DE
500
#2C80D3
600
#2366A9
700
#1C5287
800
#164069
900
#14304D
950
#0D1F31

Contrast Checker

Text on white

5.5:1

AA Pass AAA Fail

Text on black

3.82:1

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