#1F66AE

#1F66AE

Color Values

HEX

#1F66AE

RGB

31, 102, 174

HSL

210.2, 69.8%, 40.2%

HSV

210.2, 82.2%, 68.2%

CMYK

82.2%, 41.4%, 0.0%, 31.8%

OKLCH

0.5054 0.1334 252.6

Properties

Cool Dark Nearest: NCS S 1060-B Bright Blue

Color Harmonies

Complementary

#1F66AE

#AE671F

Analogous

#1FAEAE

#1F1FAE

#1F66AE

Triadic

#1F66AE

#AE1F66

#66AE1F

Split Complementary

#1F66AE

#AE1F1F

#AEAE1F

Tetradic

#1F66AE

#AE1FAE

#AE671F

#1FAE1F

Color Blindness Simulation

Original

#1F66AE

Protanopia

#3E3E9D

Deuteranopia

#3A3498

Tritanopia

#238F8C

Achromatopsia

#5C5C5C

CSS Usage

background-color: #1F66AE;
color: #1F66AE;
border-color: #1F66AE;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F3F7FC
100
#E3EDF8
200
#C2DBF4
300
#97C2ED
400
#5FA0E3
500
#277FD8
600
#1F66AD
700
#19518B
800
#133F6C
900
#12304F
950
#0B1E32

Contrast Checker

Text on white

5.88:1

AA Pass AAA Fail

Text on black

3.57:1

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