#1b1f2b

Color #1b1f2b

A muted very dark blue.

Closest named color Black #000000 · ΔE 14.79 Nearest Tailwind class gray-900 #101828 · ΔE 3.3

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Conversions

HEX

#1b1f2b

RGB

rgb(27, 31, 43)

HSL

hsl(225, 22.9%, 13.7%)

HSV / HSB

hsv(225, 37.2%, 16.9%)

CMYK

cmyk(37.2%, 27.9%, 0%, 83.1%)

LAB

lab(11.87, 1.77, -8.64)

LCH

lch(11.87, 8.82, 281.58)

OKLCH

oklch(24.1%, 0.0238, 270.24)

HWB

hwb(225, 10.6%, 83.1%)

Harmony colors

Complementary

#2b271b

Analogous

#1b272b

#1b1f2b

#1f1b2b

Triadic

#1b1f2b

#2b1b1f

#1f2b1b

Split-complementary

#1b1f2b

#2b1f1b

#272b1b

Tetradic

#1b1f2b

#271b2b

#2b271b

#1f2b1b

Square

#1b1f2b

#2b1b27

#2b271b

#1b2b1f

Shades

Color #1b1f2b mixed toward black.

#161a24

#12151d

#0d0f15

#090a0e

#040507

Tints

Color #1b1f2b mixed toward white.

#373f58

#536085

#7884aa

#a5adc6

#d2d6e3

Tones

Color #1b1f2b mixed toward gray.

#1c202a

#1e2028

#1f2127

#202226

#222224

Accessibility

Aa White text on this color

16.44:1

Aa Black text on this color

1.28:1

White text reads better on this background (16.44:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#1d1d28 · ΔE 2.2

Deuteranopia

#1d1c28 · ΔE 3

Tritanopia

#1b2626 · ΔE 10.2

Achromatopsia

#1f1f1f · ΔE 7.5

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

Code

CSS

background-color: #1b1f2b;

Tailwind (arbitrary value)

bg-[#1b1f2b]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#1b1f2b (#1b1f2b) is rgb(27, 31, 43) in RGB.

No, #1b1f2b is not web-safe. The nearest web-safe colors are among its tones and shades below.

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 #1b1f2b, or check how it holds up for accessibility.

Generate a palette → Check contrast