#12152f

Color #12152f

A moderately saturated very dark blue.

Closest named color Black #000000 · ΔE 21.06 Nearest Tailwind class slate-900 #0f172b · ΔE 4

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Conversions

HEX

#12152f

RGB

rgb(18, 21, 47)

HSL

hsl(233.8, 44.6%, 12.7%)

HSV / HSB

hsv(233.8, 61.7%, 18.4%)

CMYK

cmyk(61.7%, 55.3%, 0%, 81.6%)

LAB

lab(7.86, 7.82, -17.91)

LCH

lch(7.86, 19.54, 293.59)

OKLCH

oklch(20.9%, 0.0512, 276.06)

HWB

hwb(233.8, 7.1%, 81.6%)

Harmony colors

Complementary

#2f2c12

Analogous

#12232f

#12152f

#1d122f

Triadic

#12152f

#2f1215

#152f12

Split-complementary

#12152f

#2f1d12

#232f12

Tetradic

#12152f

#2c122f

#2f2c12

#152f12

Square

#12152f

#2f1223

#2f2c12

#122f1d

Shades

Color #12152f mixed toward black.

#0f1127

#0c0e1f

#090a17

#060710

#030308

Tints

Color #12152f mixed toward white.

#262d64

#3b459a

#5e68c1

#949bd6

#c9cdea

Tones

Color #12152f mixed toward gray.

#14172c

#17192a

#191b28

#1c1d25

#1e1e23

Accessibility

Aa White text on this color

17.89:1

Aa Black text on this color

1.17:1

White text reads better on this background (17.89:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#13132a · ΔE 1.6

Deuteranopia

#131329 · ΔE 1.9

Tritanopia

#122625 · ΔE 20.3

Achromatopsia

#171717 · ΔE 14.4

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

Code

CSS

background-color: #12152f;

Tailwind (arbitrary value)

bg-[#12152f]

Related colors

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Ghost White #f8f8ff

Medium Blue #0000cd

Frequently asked questions

#12152f (#12152f) is rgb(18, 21, 47) in RGB.

No, #12152f 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 #12152f, or check how it holds up for accessibility.

Generate a palette → Check contrast