#EFA00A

sRGB: 239 / 160 / 10

#EFA00A belongs to the orange family. Its hex code tells a screen to mix 239 red, 160 green and 10 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 39.3° lands in the orange region. Its 92.0% saturation makes it strong in color at this lightness. HSL lightness is 48.8% on a scale from black (0%) to white (100%). Of black and white lettering, black has the clearer light-to-dark separation on this background (9.70:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 239, 160, 10
HSL: 39.30°, 91.97%, 48.82%
HSV / HSB: 39.30°, 95.82%, 93.73%
CMYK (approx.): 0.00%, 33.05%, 95.82%, 6.27%
CIE XYZ (D65, Y = 100 for white): 48.221, 43.517, 6.147
CIELAB (D65, 2° observer): 71.904, 19.887, 74.840
WCAG relative luminance: 0.43514
24-bit decimal: 15704074

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 #EFA00A 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: 9.70:1

Normal text: AAA
Large text: AAA

White text: 2.16:1

Normal text: Fail
Large text: Fail

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

#0A59EF sits half a turn (180°) from #EFA00A 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.

#EFA00A #0A59EF

Analogous

#EF2E0A and #CBEF0A sit 30° to either side of #EFA00A. 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.

#EF2E0A #EFA00A #CBEF0A

Triadic

#EFA00A, #0AEFA0 and #A00AEF are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#EFA00A #0AEFA0 #A00AEF

Split complementary

Start at #EFA00A and look across the wheel. #0ACCEF and #2D0AEF sit 30° to either side of its exact opposite, giving you two different accent choices.

#EFA00A #0ACCEF #2D0AEF

Square

Starting with #EFA00A, each quarter turn (90°) takes you to the next hue: #0AEF2E, #0A59EF, then #EF0ACC. Across the square, #EFA00A pairs with #0A59EF, and #0AEF2E with #EF0ACC.

#EFA00A #0AEF2E #0A59EF #EF0ACC

Tetradic

#EFA00A and #0A59EF are opposites, as are #59EF0A and #A00AEF. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#EFA00A #59EF0A #0A59EF #A00AEF

Tints

Mixing #EFA00A with white in 20% steps produces this scale. The first mixture, #F2B33B, keeps 80% of the original. By #FCECCE, the mixture is 80% white.

#EFA00A #F2B33B #F5C66C #F9D99D #FCECCE #FFFFFF

Shades

Mixing #EFA00A with black in 20% steps produces this scale. The first mixture, #BF8008, keeps 80% of the original. By #302002, the mixture is 80% black.

#EFA00A #BF8008 #8F6006 #604004 #302002 #000000

Tones

Mixing #EFA00A with middle gray in 20% steps produces this scale. The first mixture, #D99A22, keeps 80% of the original. By #968668, the mixture is 80% middle gray.

#EFA00A #D99A22 #C39339 #AC8D51 #968668 #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

#EFA00A

RGB

rgb(239 160 10)

HSL

hsl(39.301 91.968% 48.824%)

CSS example

.color-sample {
  background-color: #EFA00A;
  color: #000000;
}

Channel breakdown

RGB

#EFA00A uses 239 red, 160 green and 10 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 93.7%

Green 62.7%

Blue 3.9%

CMYK

A simple CMYK estimate for #EFA00A is 0.0% cyan, 33.1% magenta, 95.8% yellow and 6.3% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 0.0%

Magenta 33.1%

Yellow 95.8%

Black 6.3%

Nearby colors

The nearest shorthand match is #EE9911. Its matching digit pairs let you write it as #E91 in CSS. For a modern design, keep #EFA00A when you want an exact match. Use its web-safe neighbor, #FF9900, when matching a legacy palette of 216 colors.

Nearest shorthand: #EE9911 Nearest web-safe: #FF9900

Gradient to complement

#EFA00A #C99430 #A38856 #7D7D7D #5671A3 #3065C9 #0A59EF

Color vision previews

Compare how #EFA00A 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.

#BCA500

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.

#CEB816

Tritanopia

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

#FF8B88

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.

#D0A500

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.

#D8B00C

Tritanomaly (50%)

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

#F29C57

Grayscale (luminance)

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

#B0B0B0

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.

#D3A881

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 0.86316 G 0.35153 B 0.00304

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 0.89233 G 0.64100 B 0.22924

Linear Display P3

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

R 0.77232 G 0.36852 B 0.04296

CIE xyY

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

x 0.493 y 0.445 Y 43.517

CMY

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

C % 6.275 M % 37.255 Y % 96.078

Binary RGB

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

11101111 10100000 00001010