#17172C

#17172C

Color Values

HEX

#17172C

RGB

23, 23, 44

HSL

240.0, 31.3%, 13.1%

HSV

240.0, 47.7%, 17.3%

CMYK

47.7%, 47.7%, 0.0%, 82.7%

OKLCH

0.2163 0.0408 282.4

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#17172C

#2C2C17

Analogous

#17212C

#21172C

#17172C

Triadic

#17172C

#2C1717

#172C17

Split Complementary

#17172C

#2C2117

#212C17

Tetradic

#17172C

#2C1721

#2C2C17

#172C21

Color Blindness Simulation

Original

#17172C

Protanopia

#171727

Deuteranopia

#171726

Tritanopia

#172322

Achromatopsia

#191919

CSS Usage

background-color: #17172C;
color: #17172C;
border-color: #17172C;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F5F5F9
100
#E8E8F2
200
#D0D0E6
300
#AFAFD5
400
#8383BE
500
#5858A7
600
#464686
700
#38386B
800
#2C2C54
900
#23233E
950
#161627

Contrast Checker

Text on white

17.57:1

AA Pass AAA Pass

Text on black

1.2:1

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