#0100b9

Color #0100b9

A vivid, highly saturated dark blue.

Closest named color Medium Blue #0000cd · ΔE 8.92 Nearest Tailwind class indigo-800 #372aac · ΔE 6.4

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Conversions

HEX

#0100b9

RGB

rgb(1, 0, 185)

HSL

hsl(240.3, 100%, 36.3%)

HSV / HSB

hsv(240.3, 100%, 72.5%)

CMYK

cmyk(99.5%, 100%, 0%, 27.5%)

LAB

lab(21.97, 62.23, -84.71)

LCH

lch(21.97, 105.11, 306.3)

OKLCH

oklch(35.5%, 0.246, 264.19)

HWB

hwb(240.3, 0%, 27.5%)

Harmony colors

Complementary

#b8b900

Analogous

#005cb9

#0100b9

#5d00b9

Triadic

#0100b9

#b90100

#00b901

Split-complementary

#0100b9

#b95d00

#5cb900

Tetradic

#0100b9

#b900b8

#b8b900

#00b901

Square

#0100b9

#b9005c

#b8b900

#00b95d

Shades

Color #0100b9 mixed toward black.

#01009a

#01007b

#00005d

#00003e

#00001f

Tints

Color #0100b9 mixed toward white.

#0100ef

#2826ff

#5d5dff

#9393ff

#c9c9ff

Tones

Color #0100b9 mixed toward gray.

#100faa

#1f1f9a

#2f2e8b

#3e3e7b

#4d4d6c

Accessibility

Aa White text on this color

12.34:1

Aa Black text on this color

1.7:1

White text reads better on this background (12.34:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#0101a3 · ΔE 2.9

Deuteranopia

#01019e · ΔE 3.5

Tritanopia

#018f8a · ΔE 47

Achromatopsia

#353535 · ΔE 31.2

Left half is the original, right half is the simulated appearance. See all 8 vision types →

Code

CSS

background-color: #0100b9;

Tailwind (arbitrary value)

bg-[#0100b9]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#0100b9 (#0100b9) is rgb(1, 0, 185) in RGB.

No, #0100b9 is not one of the 216 web-safe colors — for that, every RGB channel would have to be a multiple of 51.

Related tools

Colors

HEX to RGB Converter

Convert any HEX color code to its RGB and HSL equivalents, live, with copy-to-clipboard values.

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Contrast Checker

Check the WCAG contrast ratio between any two colors, live, with AA/AAA pass-fail results.

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Palette Generator

Generate complementary, analogous, triadic, split-complementary, tetradic, square, and monochromatic palettes from any base color.

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Build something with this color

Generate a full palette from #0100b9, or check how it holds up for accessibility.

Generate a palette → Check contrast