#283a74

Color #283a74

A moderately saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 15.41 Nearest Tailwind class blue-900 #1c398e · ΔE 4.5

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

Conversions

HEX

#283a74

RGB

rgb(40, 58, 116)

HSL

hsl(225.8, 48.7%, 30.6%)

HSV / HSB

hsv(225.8, 65.5%, 45.5%)

CMYK

cmyk(65.5%, 50%, 0%, 54.5%)

LAB

lab(25.97, 12.93, -35.62)

LCH

lch(25.97, 37.89, 289.95)

OKLCH

oklch(36.7%, 0.102, 268.09)

HWB

hwb(225.8, 15.7%, 54.5%)

Harmony colors

Complementary

#746228

Analogous

#286074

#283a74

#3c2874

Triadic

#283a74

#74283a

#3a7428

Split-complementary

#283a74

#743c28

#607428

Tetradic

#283a74

#622874

#746228

#3a7428

Square

#283a74

#742860

#746228

#28743c

Shades

Color #283a74 mixed toward black.

#213061

#1b274d

#141d3a

#0d1327

#070a13

Tints

Color #283a74 mixed toward white.

#3750a0

#506bc2

#7b90d2

#a7b5e1

#d3daf0

Tones

Color #283a74 mixed toward gray.

#2e3d6e

#354167

#3b4461

#41475b

#484b54

Accessibility

Aa White text on this color

10.78:1

Aa Black text on this color

1.95:1

White text reads better on this background (10.78:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#313169 · ΔE 4.7

Deuteranopia

#302e67 · ΔE 5.5

Tritanopia

#29605e · ΔE 26.9

Achromatopsia

#3d3d3d · ΔE 20.9

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

Code

CSS

background-color: #283a74;

Tailwind (arbitrary value)

bg-[#283a74]

Related colors

Royal Blue #4169e1

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Navy #000080

Lavender #e6e6fa

Blue #0000ff

Frequently asked questions

#283a74 (#283a74) is rgb(40, 58, 116) in RGB.

No, #283a74 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 #283a74, or check how it holds up for accessibility.

Generate a palette → Check contrast