#400A02

sRGB · 64 / 10 / 2

#400A02 belongs to the red family. Its hex code tells a screen to mix 64 red, 10 green and 2 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 7.7° lands in the red region. Its 93.9% saturation makes it strong in color at this lightness. HSL lightness is 12.9% 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 (16.64:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 64, 10, 2
HSL: 7.74°, 93.94%, 12.94%
HSV / HSB: 7.74°, 96.88%, 25.10%
CMYK (approx.): 0.00%, 84.38%, 96.88%, 74.90%
CIE XYZ (D65, Y = 100 for white): 2.234, 1.312, 0.193
CIELAB (D65, 2° observer): 11.357, 25.304, 16.821
WCAG relative luminance: 0.01311
24-bit decimal: 4196866

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 #400A02 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 · 1.26:1

Normal text: Fail
Large text: Fail

White text · 16.64:1

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. 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

#023840 sits half a turn (180°) from #400A02 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.

#400A02 #023840

Analogous

#400219 and #402902 sit 30° to either side of #400A02. 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.

#400219 #400A02 #402902

Triadic

#400A02, #02400A and #0A0240 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#400A02 #02400A #0A0240

Split complementary

Start at #400A02 and look across the wheel. #024029 and #021940 sit 30° to either side of its exact opposite, giving you two different accent choices.

#400A02 #024029 #021940

Square

Starting with #400A02, each quarter turn (90°) takes you to the next hue: #194002, #023840, then #290240. Across the square, #400A02 pairs with #023840, and #194002 with #290240.

#400A02 #194002 #023840 #290240

Tetradic

#400A02 and #023840 are opposites, as are #384002 and #0A0240. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#400A02 #384002 #023840 #0A0240

Tints

Mixing #400A02 with white in 20% steps produces this scale. The first mixture, #663B35, keeps 80% of the original. By #D9CECC, the mixture is 80% white.

#400A02 #663B35 #8C6C67 #B39D9A #D9CECC #FFFFFF

Shades

Mixing #400A02 with black in 20% steps produces this scale. The first mixture, #330802, keeps 80% of the original. By #0D0200, the mixture is 80% black.

#400A02 #330802 #260601 #1A0401 #0D0200 #000000

Tones

Mixing #400A02 with middle gray in 20% steps produces this scale. The first mixture, #4D221B, keeps 80% of the original. By #736867, the mixture is 80% middle gray.

#400A02 #4D221B #5A3934 #66514E #736867 #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

#400A02

RGB

rgb(64 10 2)

HSL

hsl(7.742 93.939% 12.941%)

CSS example

.color-sample {
  background-color: #400A02;
  color: #FFFFFF;
}

Channel breakdown

RGB

#400A02 uses 64 red, 10 green and 2 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 25.1%

Green 3.9%

Blue 0.8%

CMYK

A simple CMYK estimate for #400A02 is 0.0% cyan, 84.4% magenta, 96.9% yellow and 74.9% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 0.0%

Magenta 84.4%

Yellow 96.9%

Black 74.9%

Nearby colors

The nearest shorthand match is #441100. Its matching digit pairs let you write it as #410 in CSS. For a modern design, keep #400A02 when you want an exact match. Use its web-safe neighbor, #330000, when matching a legacy palette of 216 colors.

Nearest shorthand · #441100 Nearest web-safe · #330000

Gradient to complement

#400A02 #36120C #2B1917 #212121 #17292B #0C3036 #023840

Color vision previews

Compare how #400A02 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.

#1B1701

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.

#282300

Tritanopia

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

#480008

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.

#2C1501

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.

#301C00

Tritanomaly (50%)

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

#410905

Grayscale (luminance)

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

#1E1E1E

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.

#321614

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 0.05127 G 0.00304 B 0.00061

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 0.22855 G 0.05742 B 0.02130

Linear Display P3

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

R 0.04271 G 0.00464 B 0.00165

CIE xyY

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

x 0.598 y 0.351 Y 1.312

CMY

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

C % 74.902 M % 96.078 Y % 99.216

Binary RGB

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

01000000 00001010 00000010