#687C19

sRGB: 104 / 124 / 25

#687C19 belongs to the yellow family. Its hex code tells a screen to mix 104 red, 124 green and 25 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 72.1° lands in the yellow region. Its 66.4% saturation makes it partway between gray and the most vivid version of this hue at this lightness. HSL lightness is 29.2% 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 (4.68:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 104, 124, 25
HSL: 72.12°, 66.44%, 29.22%
HSV / HSB: 72.12°, 79.84%, 48.63%
CMYK (approx.): 16.13%, 0.00%, 79.84%, 51.37%
CIE XYZ (D65, Y = 100 for white): 13.092, 17.428, 3.594
CIELAB (D65, 2° observer): 48.795, -21.070, 47.564
WCAG relative luminance: 0.17429
24-bit decimal: 6847513

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 #687C19 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: 4.49:1

Normal text: Fail
Large text: AA

White text: 4.68:1

Normal text: AA
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

#2D197C sits half a turn (180°) from #687C19 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.

#687C19 #2D197C

Analogous

#7C5F19 and #377C19 sit 30° to either side of #687C19. 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.

#7C5F19 #687C19 #377C19

Triadic

#687C19, #19687C and #7C1968 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#687C19 #19687C #7C1968

Split complementary

Start at #687C19 and look across the wheel. #19377C and #5F197C sit 30° to either side of its exact opposite, giving you two different accent choices.

#687C19 #19377C #5F197C

Square

Starting with #687C19, each quarter turn (90°) takes you to the next hue: #197C5E, #2D197C, then #7C1936. Across the square, #687C19 pairs with #2D197C, and #197C5E with #7C1936.

#687C19 #197C5E #2D197C #7C1936

Tetradic

#687C19 and #2D197C are opposites, as are #197C2D and #7C1968. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#687C19 #197C2D #2D197C #7C1968

Tints

Mixing #687C19 with white in 20% steps produces this scale. The first mixture, #869647, keeps 80% of the original. By #E1E5D1, the mixture is 80% white.

#687C19 #869647 #A4B075 #C3CBA3 #E1E5D1 #FFFFFF

Shades

Mixing #687C19 with black in 20% steps produces this scale. The first mixture, #536314, keeps 80% of the original. By #151905, the mixture is 80% black.

#687C19 #536314 #3E4A0F #2A320A #151905 #000000

Tones

Mixing #687C19 with middle gray in 20% steps produces this scale. The first mixture, #6D7D2E, keeps 80% of the original. By #7B7F6B, the mixture is 80% middle gray.

#687C19 #6D7D2E #727E42 #767E57 #7B7F6B #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

#687C19

RGB

rgb(104 124 25)

HSL

hsl(72.121 66.443% 29.216%)

CSS example

.color-sample {
  background-color: #687C19;
  color: #FFFFFF;
}

Channel breakdown

RGB

#687C19 uses 104 red, 124 green and 25 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 40.8%

Green 48.6%

Blue 9.8%

CMYK

A simple CMYK estimate for #687C19 is 16.1% cyan, 0.0% magenta, 79.8% yellow and 51.4% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 16.1%

Magenta 0.0%

Yellow 79.8%

Black 51.4%

Nearby colors

The nearest shorthand match is #667711. Its matching digit pairs let you write it as #671 in CSS. For a modern design, keep #687C19 when you want an exact match. Use its web-safe neighbor, #666600, when matching a legacy palette of 216 colors.

Nearest shorthand: #667711 Nearest web-safe: #666600

Gradient to complement

#687C19 #5E6C2A #545B3A #4B4B4B #413A5B #372A6C #2D197C

Color vision previews

Compare how #687C19 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.

#847400

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.

#827423

Tritanopia

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

#6E756A

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.

#7B7711

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.

#7B771F

Tritanomaly (50%)

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

#6B7944

Grayscale (luminance)

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

#747474

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.

#6E7856

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 0.13843 G 0.20156 B 0.00972

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 0.42310 G 0.48392 B 0.17487

Linear Display P3

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

R 0.14964 G 0.19946 B 0.02581

CIE xyY

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

x 0.384 y 0.511 Y 17.428

CMY

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

C % 59.216 M % 51.373 Y % 90.196

Binary RGB

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

01101000 01111100 00011001