#151b33

Color #151b33

A moderately saturated very dark blue.

Closest named color Black #000000 · ΔE 20.51 Nearest Tailwind class slate-900 #0f172b · ΔE 2.5

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Conversions

HEX

#151b33

RGB

rgb(21, 27, 51)

HSL

hsl(228, 41.7%, 14.1%)

HSV / HSB

hsv(228, 58.8%, 20%)

CMYK

cmyk(58.8%, 47.1%, 0%, 80%)

LAB

lab(10.43, 5.63, -16.74)

LCH

lch(10.43, 17.66, 288.59)

OKLCH

oklch(23%, 0.0473, 271.7)

HWB

hwb(228, 8.2%, 80%)

Harmony colors

Complementary

#332d15

Analogous

#152a33

#151b33

#1e1533

Triadic

#151b33

#33151b

#1b3315

Split-complementary

#151b33

#331e15

#2a3315

Tetradic

#151b33

#2d1533

#332d15

#1b3315

Square

#151b33

#33152a

#332d15

#15331e

Shades

Color #151b33 mixed toward black.

#11162a

#0e1222

#0a0d19

#070911

#030408

Tints

Color #151b33 mixed toward white.

#2a3667

#40529a

#6476bf

#98a4d4

#cbd1ea

Tones

Color #151b33 mixed toward gray.

#171c30

#1a1e2e

#1c1f2b

#1f2129

#212226

Accessibility

Aa White text on this color

16.98:1

Aa Black text on this color

1.24:1

White text reads better on this background (16.98:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#18182e · ΔE 2.5

Deuteranopia

#17172d · ΔE 2.6

Tritanopia

#152a29 · ΔE 18.7

Achromatopsia

#1c1c1c · ΔE 13.2

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

Code

CSS

background-color: #151b33;

Tailwind (arbitrary value)

bg-[#151b33]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Dark Blue #00008b

Frequently asked questions

#151b33 (#151b33) is rgb(21, 27, 51) in RGB.

No, #151b33 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.

Try it →

Build something with this color

Generate a full palette from #151b33, or check how it holds up for accessibility.

Generate a palette → Check contrast