#1b313b

Color #1b313b

A muted very dark cyan.

Closest named color Charcoal #36454f · ΔE 9.7 Nearest Tailwind class cyan-950 #053345 · ΔE 4.2

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Conversions

HEX

#1b313b

RGB

rgb(27, 49, 59)

HSL

hsl(198.8, 37.2%, 16.9%)

HSV / HSB

hsv(198.8, 54.2%, 23.1%)

CMYK

cmyk(54.2%, 16.9%, 0%, 76.9%)

LAB

lab(18.99, -5.39, -9.04)

LCH

lch(18.99, 10.52, 239.19)

OKLCH

oklch(30%, 0.0333, 228.65)

HWB

hwb(198.8, 10.6%, 76.9%)

Harmony colors

Complementary

#3b251b

Analogous

#1b3b35

#1b313b

#1b213b

Triadic

#1b313b

#3b1b31

#313b1b

Split-complementary

#1b313b

#3b1b21

#3b351b

Tetradic

#1b313b

#251b3b

#3b251b

#313b1b

Square

#1b313b

#351b3b

#3b251b

#213b1b

Shades

Color #1b313b mixed toward black.

#172931

#122127

#0e191e

#091014

#05080a

Tints

Color #1b313b mixed toward white.

#31596c

#47829c

#6ea4bc

#9ec2d3

#cfe1e9

Tones

Color #1b313b mixed toward gray.

#1e3038

#202f36

#232e33

#262d30

#282c2e

Accessibility

Aa White text on this color

13.56:1

Aa Black text on this color

1.55:1

White text reads better on this background (13.56:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#262639 · ΔE 13.6

Deuteranopia

#252338 · ΔE 15.3

Tritanopia

#1d3737 · ΔE 7.2

Achromatopsia

#2e2e2e · ΔE 9.5

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

Code

CSS

background-color: #1b313b;

Tailwind (arbitrary value)

bg-[#1b313b]

Related colors

Sky Blue #87ceeb

Deep Sky Blue #00bfff

Light Blue #add8e6

Light Sky Blue #87cefa

Charcoal #36454f

Steel Blue #4682b4

Frequently asked questions

#1b313b (#1b313b) is rgb(27, 49, 59) in RGB.

No, #1b313b 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 #1b313b, or check how it holds up for accessibility.

Generate a palette → Check contrast