#1a1f39

Color #1a1f39

A muted very dark blue.

Closest named color Charcoal #36454f · ΔE 20.89 Nearest Tailwind class slate-900 #0f172b · ΔE 4

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Conversions

HEX

#1a1f39

RGB

rgb(26, 31, 57)

HSL

hsl(230.3, 37.3%, 16.3%)

HSV / HSB

hsv(230.3, 54.4%, 22.4%)

CMYK

cmyk(54.4%, 45.6%, 0%, 77.6%)

LAB

lab(12.58, 6.41, -17.61)

LCH

lch(12.58, 18.74, 290)

OKLCH

oklch(24.9%, 0.0498, 274.03)

HWB

hwb(230.3, 10.2%, 77.6%)

Harmony colors

Complementary

#39341a

Analogous

#1a2f39

#1a1f39

#251a39

Triadic

#1a1f39

#391a1f

#1f391a

Split-complementary

#1a1f39

#39251a

#2f391a

Tetradic

#1a1f39

#341a39

#39341a

#1f391a

Square

#1a1f39

#391a2f

#39341a

#1a3925

Shades

Color #1a1f39 mixed toward black.

#161a30

#111526

#0d101d

#090a13

#04050a

Tints

Color #1a1f39 mixed toward white.

#303a6a

#47549b

#6c79bc

#9da6d2

#ced2e9

Tones

Color #1a1f39 mixed toward gray.

#1d2136

#1f2334

#222431

#24262f

#27282c

Accessibility

Aa White text on this color

16.17:1

Aa Black text on this color

1.3:1

White text reads better on this background (16.17:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1c1c34 · ΔE 2.1

Deuteranopia

#1c1c33 · ΔE 2.3

Tritanopia

#1a302f · ΔE 19.6

Achromatopsia

#212121 · ΔE 13.8

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

Code

CSS

background-color: #1a1f39;

Tailwind (arbitrary value)

bg-[#1a1f39]

Related colors

Royal Blue #4169e1

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Frequently asked questions

#1a1f39 (#1a1f39) is rgb(26, 31, 57) in RGB.

No, #1a1f39 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 #1a1f39, or check how it holds up for accessibility.

Generate a palette → Check contrast