#151b2d

Color #151b2d

A muted very dark blue.

Closest named color Black #000000 · ΔE 16.73 Nearest Tailwind class slate-900 #0f172b · ΔE 1.7

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Conversions

HEX

#151b2d

RGB

rgb(21, 27, 45)

HSL

hsl(225, 36.4%, 12.9%)

HSV / HSB

hsv(225, 53.3%, 17.6%)

CMYK

cmyk(53.3%, 40%, 0%, 82.4%)

LAB

lab(10.05, 3.31, -12.96)

LCH

lch(10.05, 13.38, 284.33)

OKLCH

oklch(22.6%, 0.0363, 269.37)

HWB

hwb(225, 8.2%, 82.4%)

Harmony colors

Complementary

#2d2715

Analogous

#15272d

#151b2d

#1b152d

Triadic

#151b2d

#2d151b

#1b2d15

Split-complementary

#151b2d

#2d1b15

#272d15

Tetradic

#151b2d

#27152d

#2d2715

#1b2d15

Square

#151b2d

#2d1527

#2d2715

#152d1b

Shades

Color #151b2d mixed toward black.

#111625

#0e121e

#0a0d16

#07090f

#030407

Tints

Color #151b2d mixed toward white.

#2c395f

#445792

#687cb8

#9aa7d0

#cdd3e7

Tones

Color #151b2d mixed toward gray.

#171c2b

#191d29

#1b1e27

#1d1f25

#1f2023

Accessibility

Aa White text on this color

17.12:1

Aa Black text on this color

1.23:1

White text reads better on this background (17.12:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#181829 · ΔE 2.9

Deuteranopia

#171728 · ΔE 3

Tritanopia

#152626 · ΔE 14.7

Achromatopsia

#1c1c1c · ΔE 10.6

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

Code

CSS

background-color: #151b2d;

Tailwind (arbitrary value)

bg-[#151b2d]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#151b2d (#151b2d) is rgb(21, 27, 45) in RGB.

No, #151b2d 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 #151b2d, or check how it holds up for accessibility.

Generate a palette → Check contrast