#1f253a

Color #1f253a

A muted very dark blue.

Closest named color Charcoal #36454f · ΔE 16.45 Nearest Tailwind class slate-800 #1d293d · ΔE 3.2

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Conversions

HEX

#1f253a

RGB

rgb(31, 37, 58)

HSL

hsl(226.7, 30.3%, 17.5%)

HSV / HSB

hsv(226.7, 46.6%, 22.7%)

CMYK

cmyk(46.6%, 36.2%, 0%, 77.3%)

LAB

lab(15.06, 3.93, -14.39)

LCH

lch(15.06, 14.92, 285.28)

OKLCH

oklch(26.9%, 0.0402, 271.28)

HWB

hwb(226.7, 12.2%, 77.3%)

Harmony colors

Complementary

#3a341f

Analogous

#1f333a

#1f253a

#271f3a

Triadic

#1f253a

#3a1f25

#253a1f

Split-complementary

#1f253a

#3a271f

#333a1f

Tetradic

#1f253a

#341f3a

#3a341f

#253a1f

Square

#1f253a

#3a1f33

#3a341f

#1f3a27

Shades

Color #1f253a mixed toward black.

#1a1f30

#151927

#10131d

#0a0c13

#05060a

Tints

Color #1f253a mixed toward white.

#384268

#505f96

#7684b6

#a4adce

#d1d6e7

Tones

Color #1f253a mixed toward gray.

#212638

#242836

#262933

#282a31

#2a2b2f

Accessibility

Aa White text on this color

15.17:1

Aa Black text on this color

1.38:1

White text reads better on this background (15.17:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#222236 · ΔE 2.8

Deuteranopia

#212135 · ΔE 2.9

Tritanopia

#1f3231 · ΔE 16.4

Achromatopsia

#262626 · ΔE 11.5

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

Code

CSS

background-color: #1f253a;

Tailwind (arbitrary value)

bg-[#1f253a]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#1f253a (#1f253a) is rgb(31, 37, 58) in RGB.

No, #1f253a 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 #1f253a, or check how it holds up for accessibility.

Generate a palette → Check contrast