#1b373d

Color #1b373d

A muted very dark cyan.

Closest named color Charcoal #36454f · ΔE 8.99 Nearest Tailwind class cyan-950 #053345 · ΔE 6.1

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Conversions

HEX

#1b373d

RGB

rgb(27, 55, 61)

HSL

hsl(190.6, 38.6%, 17.3%)

HSV / HSB

hsv(190.6, 55.7%, 23.9%)

CMYK

cmyk(55.7%, 9.8%, 0%, 76.1%)

LAB

lab(21.22, -8.6, -7.03)

LCH

lch(21.22, 11.11, 219.26)

OKLCH

oklch(31.8%, 0.0355, 213.15)

HWB

hwb(190.6, 10.6%, 76.1%)

Harmony colors

Complementary

#3d211b

Analogous

#1b3d32

#1b373d

#1b263d

Triadic

#1b373d

#3d1b37

#373d1b

Split-complementary

#1b373d

#3d1b26

#3d321b

Tetradic

#1b373d

#211b3d

#3d211b

#373d1b

Square

#1b373d

#321b3d

#3d211b

#263d1b

Shades

Color #1b373d mixed toward black.

#172e33

#122529

#0e1c1f

#091214

#05090a

Tints

Color #1b373d mixed toward white.

#31636e

#468f9f

#6db0be

#9ecad4

#cee5e9

Tones

Color #1b373d mixed toward gray.

#1e353a

#213337

#243235

#263032

#292e2f

Accessibility

Aa White text on this color

12.65:1

Aa Black text on this color

1.66:1

White text reads better on this background (12.65:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2a2a3c · ΔE 16.4

Deuteranopia

#28263b · ΔE 18.4

Tritanopia

#1d3a3a · ΔE 3.9

Achromatopsia

#333333 · ΔE 11

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

Code

CSS

background-color: #1b373d;

Tailwind (arbitrary value)

bg-[#1b373d]

Related colors

Powder Blue #b0e0e6

Light Blue #add8e6

Deep Sky Blue #00bfff

Sky Blue #87ceeb

Cadet Blue #5f9ea0

Dark Turquoise #00ced1

Frequently asked questions

#1b373d (#1b373d) is rgb(27, 55, 61) in RGB.

No, #1b373d 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 #1b373d, or check how it holds up for accessibility.

Generate a palette → Check contrast