#104F56

sRGB: 16 / 79 / 86

#104F56 belongs to the cyan family. Its hex code tells a screen to mix 16 red, 79 green and 86 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 186.0° lands in the cyan region. Its 68.6% saturation makes it partway between gray and the most vivid version of this hue at this lightness. HSL lightness is 20.0% 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 (9.23:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 16, 79, 86
HSL: 186.00°, 68.63%, 20.00%
HSV / HSB: 186.00°, 81.40%, 33.73%
CMYK (approx.): 81.40%, 8.14%, 0.00%, 66.27%
CIE XYZ (D65, Y = 100 for white): 4.689, 6.374, 9.788
CIELAB (D65, 2° observer): 30.336, -16.344, -9.695
WCAG relative luminance: 0.06374
24-bit decimal: 1068886

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 #104F56 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: 2.27:1

Normal text: Fail
Large text: Fail

White text: 9.23:1

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

#561710 sits half a turn (180°) from #104F56 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.

#104F56 #561710

Analogous

#10563A and #102C56 sit 30° to either side of #104F56. 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.

#10563A #104F56 #102C56

Triadic

#104F56, #56104F and #4F5610 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#104F56 #56104F #4F5610

Split complementary

Start at #104F56 and look across the wheel. #56102C and #563A10 sit 30° to either side of its exact opposite, giving you two different accent choices.

#104F56 #56102C #563A10

Square

Starting with #104F56, each quarter turn (90°) takes you to the next hue: #3A1056, #561710, then #2C5610. Across the square, #104F56 pairs with #561710, and #3A1056 with #2C5610.

#104F56 #3A1056 #561710 #2C5610

Tetradic

#104F56 and #561710 are opposites, as are #171056 and #4F5610. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#104F56 #171056 #561710 #4F5610

Tints

Mixing #104F56 with white in 20% steps produces this scale. The first mixture, #407278, keeps 80% of the original. By #CFDCDD, the mixture is 80% white.

#104F56 #407278 #70959A #9FB9BB #CFDCDD #FFFFFF

Shades

Mixing #104F56 with black in 20% steps produces this scale. The first mixture, #0D3F45, keeps 80% of the original. By #031011, the mixture is 80% black.

#104F56 #0D3F45 #0A2F34 #062022 #031011 #000000

Tones

Mixing #104F56 with middle gray in 20% steps produces this scale. The first mixture, #26595E, keeps 80% of the original. By #6A7678, the mixture is 80% middle gray.

#104F56 #26595E #3D6367 #536C6F #6A7678 #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

#104F56

RGB

rgb(16 79 86)

HSL

hsl(186.000 68.627% 20.000%)

CSS example

.color-sample {
  background-color: #104F56;
  color: #FFFFFF;
}

Channel breakdown

RGB

#104F56 uses 16 red, 79 green and 86 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 6.3%

Green 31.0%

Blue 33.7%

CMYK

A simple CMYK estimate for #104F56 is 81.4% cyan, 8.1% magenta, 0.0% yellow and 66.3% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 81.4%

Magenta 8.1%

Yellow 0.0%

Black 66.3%

Nearby colors

The nearest shorthand match is #115555. Its matching digit pairs let you write it as #155 in CSS. For a modern design, keep #104F56 when you want an exact match. Use its web-safe neighbor, #006666, when matching a legacy palette of 216 colors.

Nearest shorthand: #115555 Nearest web-safe: #006666

Gradient to complement

#104F56 #1C464A #273C3F #333333 #3F2A27 #4A201C #561710

Color vision previews

Compare how #104F56 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.

#484B56

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.

#3E4456

Tritanopia

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

#005351

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.

#3A4C56

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.

#354856

Tritanomaly (50%)

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

#0B5054

Grayscale (luminance)

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

#474747

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.

#344B4F

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 0.00518 G 0.07819 B 0.09306

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 0.14348 G 0.30505 B 0.33269

Linear Display P3

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

R 0.01814 G 0.07576 B 0.09048

CIE xyY

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

x 0.225 y 0.306 Y 6.374

CMY

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

C % 93.725 M % 69.020 Y % 66.275

Binary RGB

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

00010000 01001111 01010110