#1F4258

#1F4258

Color Values

HEX

#1F4258

RGB

31, 66, 88

HSL

203.2, 47.9%, 23.3%

HSV

203.2, 64.8%, 34.5%

CMYK

64.8%, 25.0%, 0.0%, 65.5%

OKLCH

0.3634 0.0557 238.5

Properties

Cool Dark Nearest: RAL 5020 Ocean Blue

Color Harmonies

Complementary

#1F4258

#58351F

Analogous

#1F5851

#1F2558

#1F4258

Triadic

#1F4258

#581F42

#42581F

Split Complementary

#1F4258

#581F25

#58511F

Tetradic

#1F4258

#511F58

#58351F

#25581F

Color Blindness Simulation

Original

#1F4258

Protanopia

#2E2E53

Deuteranopia

#2C2A51

Tritanopia

#214E4E

Achromatopsia

#3C3C3C

CSS Usage

background-color: #1F4258;
color: #1F4258;
border-color: #1F4258;
Nearest Tailwind: Slate 700 #334155

Tailwind Shades

50
#F4F8FA
100
#E6EFF4
200
#CADFEC
300
#A4C8DF
400
#73ABCE
500
#428DBD
600
#357197
700
#2B5A79
800
#21475E
900
#1C3545
950
#11222C

Contrast Checker

Text on white

10.61:1

AA Pass AAA Pass

Text on black

1.98:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026