#213b63

Color #213b63

A moderately saturated dark blue.

Closest named color Charcoal #36454f · ΔE 20.43 Nearest Tailwind class slate-700 #314158 · ΔE 5.5

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Conversions

HEX

#213b63

RGB

rgb(33, 59, 99)

HSL

hsl(216.4, 50%, 25.9%)

HSV / HSB

hsv(216.4, 66.7%, 38.8%)

CMYK

cmyk(66.7%, 40.4%, 0%, 61.2%)

LAB

lab(24.8, 4.24, -26.62)

LCH

lch(24.8, 26.96, 279.05)

OKLCH

oklch(35.3%, 0.0771, 258.78)

HWB

hwb(216.4, 12.9%, 61.2%)

Harmony colors

Complementary

#634921

Analogous

#215c63

#213b63

#282163

Triadic

#213b63

#63213b

#3b6321

Split-complementary

#213b63

#632821

#5c6321

Tetradic

#213b63

#492163

#634921

#3b6321

Square

#213b63

#63215c

#634921

#216328

Shades

Color #213b63 mixed toward black.

#1c3153

#162742

#111e32

#0b1421

#060a11

Tints

Color #213b63 mixed toward white.

#315792

#4274c0

#7196d0

#a1b9e0

#d0dcef

Tones

Color #213b63 mixed toward gray.

#273c5e

#2c3d58

#323f53

#37404d

#3d4148

Accessibility

Aa White text on this color

11.23:1

Aa Black text on this color

1.87:1

White text reads better on this background (11.23:1). That passes WCAG AAA (≥7:1) for normal-size text.

Under color vision deficiencies

Protanopia

#2e2e5b · ΔE 7.7

Deuteranopia

#2d2b59 · ΔE 8.5

Tritanopia

#235453 · ΔE 22.1

Achromatopsia

#3b3b3b · ΔE 16.9

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

Code

CSS

background-color: #213b63;

Tailwind (arbitrary value)

bg-[#213b63]

Related colors

Cornflower Blue #6495ed

Light Steel Blue #b0c4de

Light Slate Gray #778899

Slate Gray #708090

Dodger Blue #1e90ff

Alice Blue #f0f8ff

Frequently asked questions

#213b63 (#213b63) is rgb(33, 59, 99) in RGB.

No, #213b63 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 #213b63, or check how it holds up for accessibility.

Generate a palette → Check contrast