#1b0a91

Color #1b0a91

A vivid, highly saturated dark blue.

Closest named color Dark Blue #00008b · ΔE 3.67 Nearest Tailwind class violet-900 #4d179a · ΔE 6.3

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#1b0a91

RGB

rgb(27, 10, 145)

HSL

hsl(247.6, 87.1%, 30.4%)

HSV / HSB

hsv(247.6, 93.1%, 56.9%)

CMYK

cmyk(81.4%, 93.1%, 0%, 43.1%)

LAB

lab(17.89, 49.28, -67.16)

LCH

lch(17.89, 83.3, 306.27)

OKLCH

oklch(31.5%, 0.1942, 271.42)

HWB

hwb(247.6, 3.9%, 43.1%)

Harmony colors

Complementary

#80910a

Analogous

#0a3c91

#1b0a91

#5f0a91

Triadic

#1b0a91

#911b0a

#0a911b

Split-complementary

#1b0a91

#915f0a

#3c910a

Tetradic

#1b0a91

#910a80

#80910a

#0a911b

Square

#1b0a91

#910a3c

#80910a

#0a915f

Shades

Color #1b0a91 mixed toward black.

#170879

#120761

#0e0549

#090330

#050218

Tints

Color #1b0a91 mixed toward white.

#250ec8

#3c22f0

#6d59f4

#9d90f7

#cec8fb

Tones

Color #1b0a91 mixed toward gray.

#241586

#2c217b

#342c6f

#3d3764

#454259

Accessibility

Aa White text on this color

14.01:1

Aa Black text on this color

1.5:1

White text reads better on this background (14.01:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#151580 · ΔE 3.1

Deuteranopia

#16177b · ΔE 4.1

Tritanopia

#1a706c · ΔE 39.6

Achromatopsia

#2c2c2c · ΔE 29

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

Code

CSS

background-color: #1b0a91;

Tailwind (arbitrary value)

bg-[#1b0a91]

Related colors

Slate Blue #6a5acd

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#1b0a91 (#1b0a91) is rgb(27, 10, 145) in RGB.

No, #1b0a91 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 #1b0a91, or check how it holds up for accessibility.

Generate a palette → Check contrast