#1f3740

Color #1f3740

A muted very dark cyan.

Closest named color Charcoal #36454f · ΔE 7.55 Nearest Tailwind class cyan-950 #053345 · ΔE 4.6

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Conversions

HEX

#1f3740

RGB

rgb(31, 55, 64)

HSL

hsl(196.4, 34.7%, 18.6%)

HSV / HSB

hsv(196.4, 51.6%, 25.1%)

CMYK

cmyk(51.6%, 14.1%, 0%, 74.9%)

LAB

lab(21.56, -6.43, -8.52)

LCH

lch(21.56, 10.67, 232.96)

OKLCH

oklch(32.1%, 0.0339, 223.92)

HWB

hwb(196.4, 12.2%, 74.9%)

Harmony colors

Complementary

#40281f

Analogous

#1f4038

#1f3740

#1f2640

Triadic

#1f3740

#401f37

#37401f

Split-complementary

#1f3740

#401f26

#40381f

Tetradic

#1f3740

#281f40

#40281f

#37401f

Square

#1f3740

#381f40

#40281f

#26401f

Shades

Color #1f3740 mixed toward black.

#1a2e35

#15252b

#0f1b20

#0a1215

#05090b

Tints

Color #1f3740 mixed toward white.

#365f6e

#4c879d

#73a8bb

#a2c5d2

#d0e2e8

Tones

Color #1f3740 mixed toward gray.

#22363d

#24343a

#273338

#2a3235

#2d3132

Accessibility

Aa White text on this color

12.51:1

Aa Black text on this color

1.68:1

White text reads better on this background (12.51:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2b2b3e · ΔE 14.6

Deuteranopia

#2a283d · ΔE 16.2

Tritanopia

#213c3c · ΔE 6.2

Achromatopsia

#343434 · ΔE 10

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

Code

CSS

background-color: #1f3740;

Tailwind (arbitrary value)

bg-[#1f3740]

Related colors

Sky Blue #87ceeb

Deep Sky Blue #00bfff

Light Blue #add8e6

Light Sky Blue #87cefa

Charcoal #36454f

Powder Blue #b0e0e6

Frequently asked questions

#1f3740 (#1f3740) is rgb(31, 55, 64) in RGB.

No, #1f3740 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 #1f3740, or check how it holds up for accessibility.

Generate a palette → Check contrast