#052D3F

sRGB: 5 / 45 / 63

#052D3F belongs to the azure family. Its hex code tells a screen to mix 5 red, 45 green and 63 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 198.6° lands in the azure region. Its 85.3% saturation makes it strong in color at this lightness. HSL lightness is 13.3% on a scale from black (0%) to white (100%). Of black and white lettering, white has the clearer light-to-dark separation on this background (14.45:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 5, 45, 63
HSL: 198.62°, 85.29%, 13.33%
HSV / HSB: 198.62°, 92.06%, 24.71%
CMYK (approx.): 92.06%, 28.57%, 0.00%, 75.29%
CIE XYZ (D65, Y = 100 for white): 1.898, 2.268, 5.040
CIELAB (D65, 2° observer): 16.834, -5.874, -15.197
WCAG relative luminance: 0.02268
24-bit decimal: 339263

CMYK uses a profile-free approximation. Printed output depends on the press, ink and paper. Lab uses a D65 white point.

Text contrast

Contrast tells you how clearly lettering separates from #052D3F in light and dark. The ratio compares relative luminance, a measure of light weighted for human vision. Identical colors give 1:1 and black against white gives 21:1. A ratio of 2.99:1 falls just below the 3:1 AA minimum for large text. Body text needs at least 4.5:1 because its finer strokes are harder to distinguish.

Black text: 1.45:1

Normal text: Fail
Large text: Fail

White text: 14.45:1

Normal text: AAA
Large text: AAA

AA and AAA are WCAG accessibility levels. AAA sets a higher bar: 7:1 for normal text and 4.5:1 for large text. Large text begins at 18 pt regular or 14 pt bold. Ratings use the unrounded ratio.

Reference: WCAG text contrast guidance

Palettes & scales

Harmonies rotate the hue. Scales mix the starting color with white, black or middle gray in 20% steps in encoded sRGB.

Complementary

#3F1705 sits half a turn (180°) from #052D3F on the HSL wheel. Keeping saturation and lightness steady while crossing to the opposite hue gives you a contrasting accent. Check text contrast separately before using the pair for lettering.

#052D3F #3F1705

Analogous

#053F34 and #05103F sit 30° to either side of #052D3F. The three hues are neighbors on the wheel, so you can change the color of a border or highlight while keeping it close to the original.

#053F34 #052D3F #05103F

Triadic

#052D3F, #3F052D and #2D3F05 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#052D3F #3F052D #2D3F05

Split complementary

Start at #052D3F and look across the wheel. #3F0510 and #3F3405 sit 30° to either side of its exact opposite, giving you two different accent choices.

#052D3F #3F0510 #3F3405

Square

Starting with #052D3F, each quarter turn (90°) takes you to the next hue: #34053F, #3F1705, then #103F05. Across the square, #052D3F pairs with #3F1705, and #34053F with #103F05.

#052D3F #34053F #3F1705 #103F05

Tetradic

#052D3F and #3F1705 are opposites, as are #17053F and #2D3F05. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#052D3F #17053F #3F1705 #2D3F05

Tints

Mixing #052D3F with white in 20% steps produces this scale. The first mixture, #375765, keeps 80% of the original. By #CDD5D9, the mixture is 80% white.

#052D3F #375765 #69818C #9BABB2 #CDD5D9 #FFFFFF

Shades

Mixing #052D3F with black in 20% steps produces this scale. The first mixture, #042432, keeps 80% of the original. By #01090D, the mixture is 80% black.

#052D3F #042432 #031B26 #021219 #01090D #000000

Tones

Mixing #052D3F with middle gray in 20% steps produces this scale. The first mixture, #1E3E4C, keeps 80% of the original. By #676F73, the mixture is 80% middle gray.

#052D3F #1E3E4C #364E59 #4F5F66 #676F73 #808080

Copy color codes

Hex, RGB and HSL are three ways to write this screen color. Paste any of them into a CSS color property.

Hex

#052D3F

RGB

rgb(5 45 63)

HSL

hsl(198.621 85.294% 13.333%)

CSS example

.color-sample {
  background-color: #052D3F;
  color: #FFFFFF;
}

Channel breakdown

RGB

#052D3F uses 5 red, 45 green and 63 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 2.0%

Green 17.6%

Blue 24.7%

CMYK

A simple CMYK estimate for #052D3F is 92.1% cyan, 28.6% magenta, 0.0% yellow and 75.3% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 92.1%

Magenta 28.6%

Yellow 0.0%

Black 75.3%

Nearby colors

The nearest shorthand match is #003344. Its matching digit pairs let you write it as #034 in CSS. For a modern design, keep #052D3F when you want an exact match. Use its web-safe neighbor, #003333, when matching a legacy palette of 216 colors.

Nearest shorthand: #003344 Nearest web-safe: #003333

Gradient to complement

#052D3F #0F2935 #18262C #222222 #2C1E18 #351B0F #3F1705

Color vision previews

Compare how #052D3F appears in each simulation. When two chart lines or status indicators become hard to tell apart, a label, shape or line pattern gives readers another way to distinguish them. Individual perception varies.

Protanopia

A red–green color vision deficiency. Without a distinct response from long-wavelength cones, some reds and greens can look alike, and reds can appear darker.

#242D40

Deuteranopia

A red–green color vision deficiency. Without a distinct response from medium-wavelength cones, some greens can be difficult to distinguish from reds or browns.

#1C273F

Tritanopia

A blue–yellow color vision deficiency. Without a distinct response from short-wavelength cones, blue can resemble green, and yellow can resemble pink.

#003233

Protanomaly (50%)

An altered long-wavelength cone response can make reds appear dimmer and harder to distinguish from greens. This swatch shows the model’s halfway setting.

#1C2C3F

Deuteranomaly (50%)

An altered medium-wavelength cone response can reduce the visible difference between reds and greens. This swatch shows the model’s halfway setting.

#18293F

Tritanomaly (50%)

An altered short-wavelength cone response can make blue harder to distinguish from green. This swatch shows the model’s halfway setting.

#002E3B

Grayscale (luminance)

This design check removes hue and preserves relative luminance so you can compare light and dark areas.

#2A2A2A

Partial grayscale (50% blend)

This design check mixes the original color halfway toward its grayscale equivalent in linear light. Use it to see how a design holds up as color fades.

#1D2B35

Reference: National Eye Institute: Types of Color Vision Deficiency

Technical reference

CAM16 and CIECAM02 below assume D65 white, an average surround, background Y of 20 against white at 100, and adapting luminance of 4.07 cd/m².

Linear sRGB

These channels scale with emitted light. Use them for lighting calculations and physically meaningful blends.

R 0.00152 G 0.02624 B 0.04971

Display P3

P3 displays can reproduce a wider range of reds and greens. These coordinates reproduce this same sRGB swatch on a color-managed P3 display.

R 0.06935 G 0.17343 B 0.24058

Linear Display P3

These P3 channels are proportional to light, before display encoding.

R 0.00591 G 0.02542 B 0.04718

CIE xyY

The x and y coordinates locate chromaticity on a diagram. Y gives relative luminance on a scale where white is 100.

x 0.206 y 0.246 Y 2.268

CMY

Ideal cyan, magenta and yellow are the complements of the encoded red, green and blue channels.

C % 98.039 M % 82.353 Y % 75.294

Binary RGB

Each eight-bit group represents one channel. Together they store the 24-bit hex color.

00000101 00101101 00111111