#281a5b

Color #281a5b

A moderately saturated dark blue.

Closest named color Midnight Blue #191970 · ΔE 14.1 Nearest Tailwind class indigo-950 #1e1a4d · ΔE 3.5

Open in Palette generator Color wheel Color mixer Contrast checker Blindness simulator Gradient

Conversions

HEX

#281a5b

RGB

rgb(40, 26, 91)

HSL

hsl(252.9, 55.6%, 22.9%)

HSV / HSB

hsv(252.9, 71.4%, 35.7%)

CMYK

cmyk(56%, 71.4%, 0%, 64.3%)

LAB

lab(15.2, 25.84, -36.77)

LCH

lch(15.2, 44.94, 305.1)

OKLCH

oklch(28%, 0.1102, 286.87)

HWB

hwb(252.9, 10.2%, 64.3%)

Harmony colors

Complementary

#4d5b1a

Analogous

#1a2c5b

#281a5b

#481a5b

Triadic

#281a5b

#5b281a

#1a5b28

Split-complementary

#281a5b

#5b481a

#2c5b1a

Tetradic

#281a5b

#5b1a4d

#4d5b1a

#1a5b28

Square

#281a5b

#5b1a2c

#4d5b1a

#1a5b48

Shades

Color #281a5b mixed toward black.

#21164c

#1b113d

#140d2d

#0d091e

#07040f

Tints

Color #281a5b mixed toward white.

#3e288e

#5537c1

#7e66d3

#a999e2

#d4ccf0

Tones

Color #281a5b mixed toward gray.

#2b1f55

#2e2550

#312a4b

#343045

#373540

Accessibility

Aa White text on this color

15.12:1

Aa Black text on this color

1.39:1

White text reads better on this background (15.12:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#232351 · ΔE 5.1

Deuteranopia

#23244e · ΔE 6.1

Tritanopia

#274745 · ΔE 27.1

Achromatopsia

#262626 · ΔE 23.2

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

Code

CSS

background-color: #281a5b;

Tailwind (arbitrary value)

bg-[#281a5b]

Related colors

Dark Slate Blue #483d8b

Medium Slate Blue #7b68ee

Slate Blue #6a5acd

Medium Purple #9370db

Navy #000080

Lavender #e6e6fa

Frequently asked questions

#281a5b (#281a5b) is rgb(40, 26, 91) in RGB.

No, #281a5b 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 #281a5b, or check how it holds up for accessibility.

Generate a palette → Check contrast