#FDCF21

sRGB · 253 / 207 / 33

#FDCF21 belongs to the yellow family. Its hex code tells a screen to mix 253 red, 207 green and 33 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 47.5° lands in the yellow region. Its 98.2% saturation makes it strong in color at this lightness. HSL lightness is 56.1% 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 (14.12:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 253, 207, 33
HSL: 47.45°, 98.21%, 56.08%
HSV / HSB: 47.45°, 86.96%, 99.22%
CMYK (approx.): 0.00%, 18.18%, 86.96%, 0.78%
CIE XYZ (D65, Y = 100 for white): 63.093, 65.620, 10.782
CIELAB (D65, 2° observer): 84.802, 1.676, 81.276
WCAG relative luminance: 0.65618
24-bit decimal: 16633633

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 #FDCF21 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 · 14.12:1

Normal text: AAA
Large text: AAA

White text · 1.49:1

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. 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

#214FFD sits half a turn (180°) from #FDCF21 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.

#FDCF21 #214FFD

Analogous

#FD6121 and #BDFD21 sit 30° to either side of #FDCF21. 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.

#FD6121 #FDCF21 #BDFD21

Triadic

#FDCF21, #21FDCF and #CF21FD are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#FDCF21 #21FDCF #CF21FD

Split complementary

Start at #FDCF21 and look across the wheel. #21BDFD and #6121FD sit 30° to either side of its exact opposite, giving you two different accent choices.

#FDCF21 #21BDFD #6121FD

Square

Starting with #FDCF21, each quarter turn (90°) takes you to the next hue: #21FD61, #214FFD, then #FD21BD. Across the square, #FDCF21 pairs with #214FFD, and #21FD61 with #FD21BD.

#FDCF21 #21FD61 #214FFD #FD21BD

Tetradic

#FDCF21 and #214FFD are opposites, as are #4FFD21 and #CF21FD. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#FDCF21 #4FFD21 #214FFD #CF21FD

Tints

Mixing #FDCF21 with white in 20% steps produces this scale. The first mixture, #FDD94D, keeps 80% of the original. By #FFF5D3, the mixture is 80% white.

#FDCF21 #FDD94D #FEE27A #FEECA6 #FFF5D3 #FFFFFF

Shades

Mixing #FDCF21 with black in 20% steps produces this scale. The first mixture, #CAA61A, keeps 80% of the original. By #332907, the mixture is 80% black.

#FDCF21 #CAA61A #987C14 #65530D #332907 #000000

Tones

Mixing #FDCF21 with middle gray in 20% steps produces this scale. The first mixture, #E4BF34, keeps 80% of the original. By #99906D, the mixture is 80% middle gray.

#FDCF21 #E4BF34 #CBAF47 #B2A05A #99906D #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

#FDCF21

RGB

rgb(253 207 33)

HSL

hsl(47.455 98.214% 56.078%)

CSS example

.color-sample {
  background-color: #FDCF21;
  color: #000000;
}

Channel breakdown

RGB

#FDCF21 uses 253 red, 207 green and 33 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 99.2%

Green 81.2%

Blue 12.9%

CMYK

A simple CMYK estimate for #FDCF21 is 0.0% cyan, 18.2% magenta, 87.0% yellow and 0.8% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 0.0%

Magenta 18.2%

Yellow 87.0%

Black 0.8%

Nearby colors

The nearest shorthand match is #FFCC22. Its matching digit pairs let you write it as #FC2 in CSS. For a modern design, keep #FDCF21 when you want an exact match. Use its web-safe neighbor, #FFCC33, when matching a legacy palette of 216 colors.

Nearest shorthand · #FFCC22 Nearest web-safe · #FFCC33

Gradient to complement

#FDCF21 #D8BA46 #B4A46A #8F8F8F #6A7AB4 #4664D8 #214FFD

Color vision previews

Compare how #FDCF21 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.

#E8CC00

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.

#F3D930

Tritanopia

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

#FFBDB1

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.

#F0CE00

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.

#F5D529

Tritanomaly (50%)

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

#FFCA73

Grayscale (luminance)

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

#D4D4D4

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.

#EAD19D

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 0.98225 G 0.62396 B 0.01521

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 0.96335 G 0.81861 B 0.30512

Linear Display P3

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

R 0.91864 G 0.63585 B 0.07580

CIE xyY

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

x 0.452 y 0.470 Y 65.620

CMY

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

C % 0.784 M % 18.824 Y % 87.059

Binary RGB

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

11111101 11001111 00100001