#100F3F

#100F3F

Color Values

HEX

#100F3F

RGB

16, 15, 63

HSL

241,2, 61,5%, 15,3%

HSV

241,2, 76,2%, 24,7%

CMYK

74,6%, 76,2%, 0,0%, 75,3%

OKLCH

0,2086 0,0884 276,4

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#100F3F

#3E3F0F

Analogous

#0F263F

#280F3F

#100F3F

Triadic

#100F3F

#3F100F

#0F3F10

Split Complementary

#100F3F

#3F280F

#263F0F

Tetradic

#100F3F

#3F0F26

#3E3F0F

#0F3F28

Color Blindness Simulation

Original

#100F3F

Protanopia

#101033

Deuteranopia

#101031

Tritanopia

#102A28

Achromatopsia

#131313

CSS Usage

background-color: #100F3F;
color: #100F3F;
border-color: #100F3F;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F4F3FB
100
#E4E4F6
200
#C6C5F1
300
#9E9CE7
400
#6967DB
500
#3431CE
600
#2A27A5
700
#211F84
800
#1A1967
900
#17164B
950
#0E0E30

Contrast Checker

Text on white

18,07:1

AA Pass AAA Pass

Text on black

1,16:1

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