#000128

#000128

Color Values

HEX

#000128

RGB

0, 1, 40

HSL

238.5, 100.0%, 7.8%

HSV

238.5, 100.0%, 15.7%

CMYK

100.0%, 97.5%, 0.0%, 84.3%

OKLCH

0.1292 0.0839 264.2

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#000128

#282700

Analogous

#001528

#130028

#000128

Triadic

#000128

#280001

#012800

Split Complementary

#000128

#281300

#152800

Tetradic

#000128

#280015

#282700

#002813

Color Blindness Simulation

Original

#000128

Protanopia

#00001F

Deuteranopia

#00001C

Tritanopia

#001715

Achromatopsia

#040404

CSS Usage

background-color: #000128;
color: #000128;
border-color: #000128;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F1F1FE
100
#DEDFFC
200
#B8B9FF
300
#8588FF
400
#4247FF
500
#0006FF
600
#0005CC
700
#0004A3
800
#000380
900
#05075C
950
#03043A

Contrast Checker

Text on white

20.29:1

AA Pass AAA Pass

Text on black

1.03:1

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