#123d84

Color #123d84

A vivid, highly saturated dark blue.

Closest named color Dark Slate Blue #483d8b · ΔE 12.57 Nearest Tailwind class blue-900 #1c398e · ΔE 3.1

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

Conversions

HEX

#123d84

RGB

rgb(18, 61, 132)

HSL

hsl(217.4, 76%, 29.4%)

HSV / HSB

hsv(217.4, 86.4%, 51.8%)

CMYK

cmyk(86.4%, 53.8%, 0%, 48.2%)

LAB

lab(27.11, 14.18, -43.91)

LCH

lch(27.11, 46.14, 287.9)

OKLCH

oklch(37.6%, 0.1285, 260.14)

HWB

hwb(217.4, 7.1%, 48.2%)

Harmony colors

Complementary

#845912

Analogous

#127684

#123d84

#201284

Triadic

#123d84

#84123d

#3d8412

Split-complementary

#123d84

#842012

#768412

Tetradic

#123d84

#591284

#845912

#3d8412

Square

#123d84

#841276

#845912

#128420

Shades

Color #123d84 mixed toward black.

#0f336e

#0c2958

#091e42

#06142c

#030a16

Tints

Color #123d84 mixed toward white.

#1955b9

#2c70e2

#6194e9

#95b8f1

#cadbf8

Tones

Color #123d84 mixed toward gray.

#1b3f7a

#254271

#2e4467

#38465e

#414954

Accessibility

Aa White text on this color

10.36:1

Aa Black text on this color

2.03:1

White text reads better on this background (10.36:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2a2b78 · ΔE 7.9

Deuteranopia

#282574 · ΔE 9.5

Tritanopia

#166c6a · ΔE 29.9

Achromatopsia

#404040 · ΔE 22.9

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

Code

CSS

background-color: #123d84;

Tailwind (arbitrary value)

bg-[#123d84]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Royal Blue #4169e1

Dodger Blue #1e90ff

Frequently asked questions

#123d84 (#123d84) is rgb(18, 61, 132) in RGB.

No, #123d84 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 #123d84, or check how it holds up for accessibility.

Generate a palette → Check contrast