#151c1f

Color #151c1f

A muted very dark cyan.

Closest named color Black #000000 · ΔE 10.46 Nearest Tailwind class mist-900 #161b1d · ΔE 1.1

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Conversions

HEX

#151c1f

RGB

rgb(21, 28, 31)

HSL

hsl(198, 19.2%, 10.2%)

HSV / HSB

hsv(198, 32.3%, 12.2%)

CMYK

cmyk(32.3%, 9.7%, 0%, 87.8%)

LAB

lab(9.71, -2.3, -3.13)

LCH

lch(9.71, 3.88, 233.69)

OKLCH

oklch(22.1%, 0.0119, 225.68)

HWB

hwb(198, 8.2%, 87.8%)

Harmony colors

Complementary

#1f1815

Analogous

#151f1d

#151c1f

#15171f

Triadic

#151c1f

#1f151c

#1c1f15

Split-complementary

#151c1f

#1f1517

#1f1d15

Tetradic

#151c1f

#18151f

#1f1815

#1c1f15

Square

#151c1f

#1d151f

#1f1815

#171f15

Shades

Color #151c1f mixed toward black.

#12171a

#0e1315

#0b0e10

#07090a

#040505

Tints

Color #151c1f mixed toward white.

#34454c

#536e7a

#7795a2

#a4b9c1

#d2dce0

Tones

Color #151c1f mixed toward gray.

#161c1e

#171b1d

#181b1d

#181b1c

#191a1b

Accessibility

Aa White text on this color

17.24:1

Aa Black text on this color

1.22:1

White text reads better on this background (17.24:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#18181e · ΔE 5.7

Deuteranopia

#18171e · ΔE 6.8

Tritanopia

#151e1e · ΔE 2.9

Achromatopsia

#1b1b1b · ΔE 4.2

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

Code

CSS

background-color: #151c1f;

Tailwind (arbitrary value)

bg-[#151c1f]

Related colors

Sky Blue #87ceeb

Deep Sky Blue #00bfff

Light Blue #add8e6

Light Sky Blue #87cefa

Charcoal #36454f

Steel Blue #4682b4

Frequently asked questions

#151c1f (#151c1f) is rgb(21, 28, 31) in RGB.

No, #151c1f 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 #151c1f, or check how it holds up for accessibility.

Generate a palette → Check contrast