#151d3f

Color #151d3f

A moderately saturated very dark blue.

Closest named color Charcoal #36454f · ΔE 25.34 Nearest Tailwind class blue-950 #162456 · ΔE 4.9

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Conversions

HEX

#151d3f

RGB

rgb(21, 29, 63)

HSL

hsl(228.6, 50%, 16.5%)

HSV / HSB

hsv(228.6, 66.7%, 24.7%)

CMYK

cmyk(66.7%, 54%, 0%, 75.3%)

LAB

lab(11.94, 8.93, -22.9)

LCH

lch(11.94, 24.58, 291.3)

OKLCH

oklch(24.4%, 0.0654, 270.88)

HWB

hwb(228.6, 8.2%, 75.3%)

Harmony colors

Complementary

#3f3715

Analogous

#15323f

#151d3f

#22153f

Triadic

#151d3f

#3f151d

#1d3f15

Split-complementary

#151d3f

#3f2215

#323f15

Tetradic

#151d3f

#37153f

#3f3715

#1d3f15

Square

#151d3f

#3f1532

#3f3715

#153f22

Shades

Color #151d3f mixed toward black.

#121835

#0e132a

#0b0f20

#070a15

#04050b

Tints

Color #151d3f mixed toward white.

#273674

#394eaa

#5f74ca

#95a2dc

#cad1ed

Tones

Color #151d3f mixed toward gray.

#191f3c

#1c2138

#202435

#232631

#27282e

Accessibility

Aa White text on this color

16.41:1

Aa Black text on this color

1.28:1

White text reads better on this background (16.41:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#191939 · ΔE 2.7

Deuteranopia

#181837 · ΔE 2.9

Tritanopia

#153332 · ΔE 22.7

Achromatopsia

#1f1f1f · ΔE 16.5

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

Code

CSS

background-color: #151d3f;

Tailwind (arbitrary value)

bg-[#151d3f]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Frequently asked questions

#151d3f (#151d3f) is rgb(21, 29, 63) in RGB.

No, #151d3f 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 #151d3f, or check how it holds up for accessibility.

Generate a palette → Check contrast