#233d66

Color #233d66

A moderately saturated dark blue.

Closest named color Charcoal #36454f · ΔE 20.78 Nearest Tailwind class slate-700 #314158 · ΔE 5.5

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Conversions

HEX

#233d66

RGB

rgb(35, 61, 102)

HSL

hsl(216.7, 48.9%, 26.9%)

HSV / HSB

hsv(216.7, 65.7%, 40%)

CMYK

cmyk(65.7%, 40.2%, 0%, 60%)

LAB

lab(25.72, 4.44, -27.08)

LCH

lch(25.72, 27.44, 279.31)

OKLCH

oklch(36.1%, 0.0783, 259.18)

HWB

hwb(216.7, 13.7%, 60%)

Harmony colors

Complementary

#664c23

Analogous

#235f66

#233d66

#2b2366

Triadic

#233d66

#66233d

#3d6623

Split-complementary

#233d66

#662b23

#5f6623

Tetradic

#233d66

#4c2366

#664c23

#3d6623

Square

#233d66

#66235f

#664c23

#23662b

Shades

Color #233d66 mixed toward black.

#1d3355

#172944

#121f33

#0c1422

#060a11

Tints

Color #233d66 mixed toward white.

#335994

#4675bf

#7498cf

#a2badf

#d1ddef

Tones

Color #233d66 mixed toward gray.

#293e61

#2e405b

#344155

#394250

#3f434a

Accessibility

Aa White text on this color

10.88:1

Aa Black text on this color

1.93:1

White text reads better on this background (10.88:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#30305e · ΔE 7.6

Deuteranopia

#2f2d5c · ΔE 8.4

Tritanopia

#255755 · ΔE 22.7

Achromatopsia

#3d3d3d · ΔE 17.1

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

Code

CSS

background-color: #233d66;

Tailwind (arbitrary value)

bg-[#233d66]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Royal Blue #4169e1

Frequently asked questions

#233d66 (#233d66) is rgb(35, 61, 102) in RGB.

No, #233d66 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 #233d66, or check how it holds up for accessibility.

Generate a palette → Check contrast