#666607

sRGB · 102 / 102 / 7

#666607 belongs to the yellow family. Its hex code tells a screen to mix 102 red, 102 green and 7 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 60.0° lands in the yellow region. Its 87.2% saturation makes it strong in color at this lightness. HSL lightness is 21.4% 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 (6.05:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 102, 102, 7
HSL: 60.00°, 87.16%, 21.37%
HSV / HSB: 60.00°, 93.14%, 40.00%
CMYK (approx.): 0.00%, 0.00%, 93.14%, 60.00%
CIE XYZ (D65, Y = 100 for white): 10.269, 12.343, 2.043
CIELAB (D65, 2° observer): 41.756, -10.808, 46.442
WCAG relative luminance: 0.12343
24-bit decimal: 6710791

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 #666607 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 · 3.47:1

Normal text: Fail
Large text: AA

White text · 6.05:1

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. 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

#070766 sits half a turn (180°) from #666607 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.

#666607 #070766

Analogous

#663707 and #376607 sit 30° to either side of #666607. 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.

#663707 #666607 #376607

Triadic

#666607, #076666 and #660766 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#666607 #076666 #660766

Split complementary

Start at #666607 and look across the wheel. #073766 and #370766 sit 30° to either side of its exact opposite, giving you two different accent choices.

#666607 #073766 #370766

Square

Starting with #666607, each quarter turn (90°) takes you to the next hue: #076637, #070766, then #660737. Across the square, #666607 pairs with #070766, and #076637 with #660737.

#666607 #076637 #070766 #660737

Tetradic

#666607 and #070766 are opposites, as are #076607 and #660766. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#666607 #076607 #070766 #660766

Tints

Mixing #666607 with white in 20% steps produces this scale. The first mixture, #858539, keeps 80% of the original. By #E0E0CD, the mixture is 80% white.

#666607 #858539 #A3A36A #C2C29C #E0E0CD #FFFFFF

Shades

Mixing #666607 with black in 20% steps produces this scale. The first mixture, #525206, keeps 80% of the original. By #141401, the mixture is 80% black.

#666607 #525206 #3D3D04 #292903 #141401 #000000

Tones

Mixing #666607 with middle gray in 20% steps produces this scale. The first mixture, #6B6B1F, keeps 80% of the original. By #7B7B68, the mixture is 80% middle gray.

#666607 #6B6B1F #707037 #767650 #7B7B68 #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

#666607

RGB

rgb(102 102 7)

HSL

hsl(60.000 87.156% 21.373%)

CSS example

.color-sample {
  background-color: #666607;
  color: #FFFFFF;
}

Channel breakdown

RGB

#666607 uses 102 red, 102 green and 7 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 40.0%

Green 40.0%

Blue 2.7%

CMYK

A simple CMYK estimate for #666607 is 0.0% cyan, 0.0% magenta, 93.1% yellow and 60.0% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 0.0%

Magenta 0.0%

Yellow 93.1%

Black 60.0%

Nearby colors

The nearest shorthand match is #666600. Its matching digit pairs let you write it as #660 in CSS. For a modern design, keep #666607 when you want an exact match. Use its web-safe neighbor, #666600, when matching a legacy palette of 216 colors.

Nearest shorthand · #666600 Nearest web-safe · #666600

Gradient to complement

#666607 #565617 #464627 #373737 #272746 #171756 #070766

Color vision previews

Compare how #666607 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.

#6F6100

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.

#706412

Tritanopia

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

#6E5F56

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.

#6C6300

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.

#6D640E

Tritanomaly (50%)

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

#686435

Grayscale (luminance)

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

#626262

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.

#646447

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 0.13287 G 0.13287 B 0.00212

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 0.40000 G 0.40000 B 0.12222

Linear Display P3

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

R 0.13287 G 0.13287 B 0.01382

CIE xyY

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

x 0.417 y 0.501 Y 12.343

CMY

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

C % 60.000 M % 60.000 Y % 97.255

Binary RGB

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

01100110 01100110 00000111