#31303f

Color #31303f

A nearly neutral, gray-leaning dark blue.

Closest named color Charcoal #36454f · ΔE 10.96 Nearest Tailwind class mauve-800 #2a212c · ΔE 6.2

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#31303f

RGB

rgb(49, 48, 63)

HSL

hsl(244, 13.5%, 21.8%)

HSV / HSB

hsv(244, 23.8%, 24.7%)

CMYK

cmyk(22.2%, 23.8%, 0%, 75.3%)

LAB

lab(20.54, 4.29, -9.26)

LCH

lch(20.54, 10.21, 294.86)

OKLCH

oklch(31.7%, 0.0266, 287.75)

HWB

hwb(244, 18.8%, 75.3%)

Harmony colors

Complementary

#3e3f30

Analogous

#30373f

#31303f

#39303f

Triadic

#31303f

#3f3130

#303f31

Split-complementary

#31303f

#3f3930

#373f30

Tetradic

#31303f

#3f303e

#3e3f30

#303f31

Square

#31303f

#3f3037

#3e3f30

#303f39

Shades

Color #31303f mixed toward black.

#292835

#21202a

#191820

#101015

#08080b

Tints

Color #31303f mixed toward white.

#4e4d65

#6c6a8b

#908ea9

#b5b4c6

#dad9e2

Tones

Color #31303f mixed toward gray.

#32313e

#33333d

#34343b

#35353a

#373639

Accessibility

Aa White text on this color

12.92:1

Aa Black text on this color

1.63:1

White text reads better on this background (12.92:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#31313c · ΔE 2.3

Deuteranopia

#31313b · ΔE 2.8

Tritanopia

#313938 · ΔE 12.3

Achromatopsia

#313131 · ΔE 9

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

Code

CSS

background-color: #31303f;

Tailwind (arbitrary value)

bg-[#31303f]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#31303f (#31303f) is rgb(49, 48, 63) in RGB.

No, #31303f 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.

Try it → Accessibility

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 #31303f, or check how it holds up for accessibility.

Generate a palette → Check contrast