#1b1f34

Color #1b1f34

A muted very dark blue.

Closest named color Charcoal #36454f · ΔE 19.09 Nearest Tailwind class slate-900 #0f172b · ΔE 3.1

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

Conversions

HEX

#1b1f34

RGB

rgb(27, 31, 52)

HSL

hsl(230.4, 31.6%, 15.5%)

HSV / HSB

hsv(230.4, 48.1%, 20.4%)

CMYK

cmyk(48.1%, 40.4%, 0%, 79.6%)

LAB

lab(12.36, 4.88, -14.38)

LCH

lch(12.36, 15.19, 288.75)

OKLCH

oklch(24.6%, 0.0404, 274.82)

HWB

hwb(230.4, 10.6%, 79.6%)

Harmony colors

Complementary

#34301b

Analogous

#1b2c34

#1b1f34

#241b34

Triadic

#1b1f34

#341b1f

#1f341b

Split-complementary

#1b1f34

#34241b

#2c341b

Tetradic

#1b1f34

#301b34

#34301b

#1f341b

Square

#1b1f34

#341b2c

#34301b

#1b3424

Shades

Color #1b1f34 mixed toward black.

#171a2b

#121523

#0e101a

#090a11

#050509

Tints

Color #1b1f34 mixed toward white.

#343b63

#4c5793

#717cb5

#a0a8ce

#d0d3e6

Tones

Color #1b1f34 mixed toward gray.

#1d2032

#1f2230

#21232e

#23252c

#25262a

Accessibility

Aa White text on this color

16.25:1

Aa Black text on this color

1.29:1

White text reads better on this background (16.25:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1d1d30 · ΔE 1.9

Deuteranopia

#1d1c2f · ΔE 2.4

Tritanopia

#1b2c2b · ΔE 16.8

Achromatopsia

#202020 · ΔE 11.8

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

Code

CSS

background-color: #1b1f34;

Tailwind (arbitrary value)

bg-[#1b1f34]

Related colors

Royal Blue #4169e1

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Frequently asked questions

#1b1f34 (#1b1f34) is rgb(27, 31, 52) in RGB.

No, #1b1f34 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 #1b1f34, or check how it holds up for accessibility.

Generate a palette → Check contrast