#250310

sRGB: 37 / 3 / 16

#250310 belongs to the rose family. Its hex code tells a screen to mix 37 red, 3 green and 16 blue on a scale of 0 to 255. On the HSL wheel, hue is a position around a circle: 337.1° lands in the rose region. Its 85.0% saturation makes it strong in color at this lightness. HSL lightness is 7.8% 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 (19.11:1), which helps the shapes of letters stand out.

Color conversions

sRGB (8-bit): 37, 3, 16
HSL: 337.06°, 85.00%, 7.84%
HSV / HSB: 337.06°, 91.89%, 14.51%
CMYK (approx.): 0.00%, 91.89%, 56.76%, 85.49%
CIE XYZ (D65, Y = 100 for white): 0.889, 0.496, 0.539
CIELAB (D65, 2° observer): 4.480, 17.074, 0.014
WCAG relative luminance: 0.00496
24-bit decimal: 2425616

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 #250310 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: 1.10:1

Normal text: Fail
Large text: Fail

White text: 19.11:1

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.

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

#032518 sits half a turn (180°) from #250310 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.

#250310 #032518

Analogous

#250321 and #250703 sit 30° to either side of #250310. 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.

#250321 #250310 #250703

Triadic

#250310, #102503 and #031025 are spaced 120° apart, forming a triangle on the wheel. Try one for the main color and the other two for accents.

#250310 #102503 #031025

Split complementary

Start at #250310 and look across the wheel. #032507 and #032125 sit 30° to either side of its exact opposite, giving you two different accent choices.

#250310 #032507 #032125

Square

Starting with #250310, each quarter turn (90°) takes you to the next hue: #212503, #032518, then #070325. Across the square, #250310 pairs with #032518, and #212503 with #070325.

#250310 #212503 #032518 #070325

Tetradic

#250310 and #032518 are opposites, as are #251803 and #031025. Together they form a rectangle on the wheel, with alternating gaps of 60° and 120°.

#250310 #251803 #032518 #031025

Tints

Mixing #250310 with white in 20% steps produces this scale. The first mixture, #513540, keeps 80% of the original. By #D3CDCF, the mixture is 80% white.

#250310 #513540 #7C6870 #A89A9F #D3CDCF #FFFFFF

Shades

Mixing #250310 with black in 20% steps produces this scale. The first mixture, #1E020D, keeps 80% of the original. By #070103, the mixture is 80% black.

#250310 #1E020D #16020A #0F0106 #070103 #000000

Tones

Mixing #250310 with middle gray in 20% steps produces this scale. The first mixture, #371C26, keeps 80% of the original. By #6E676A, the mixture is 80% middle gray.

#250310 #371C26 #49353D #5C4E53 #6E676A #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

#250310

RGB

rgb(37 3 16)

HSL

hsl(337.059 85.000% 7.843%)

CSS example

.color-sample {
  background-color: #250310;
  color: #FFFFFF;
}

Channel breakdown

RGB

#250310 uses 37 red, 3 green and 16 blue. Each bar shows how much of that channel’s 0–255 range the screen uses.

Red 14.5%

Green 1.2%

Blue 6.3%

CMYK

A simple CMYK estimate for #250310 is 0.0% cyan, 91.9% magenta, 56.8% yellow and 85.5% black. These are ink amounts; a printer profile is needed to predict the result on paper.

Cyan 0.0%

Magenta 91.9%

Yellow 56.8%

Black 85.5%

Nearby colors

The nearest shorthand match is #220011. Its matching digit pairs let you write it as #201 in CSS. For a modern design, keep #250310 when you want an exact match. Use its web-safe neighbor, #330000, when matching a legacy palette of 216 colors.

Nearest shorthand: #220011 Nearest web-safe: #330000

Gradient to complement

#250310 #1F0911 #1A0E13 #141414 #0E1A15 #091F17 #032518

Color vision previews

Compare how #250310 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.

#090B10

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.

#13120F

Tritanopia

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

#290108

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.

#170910

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.

#190E0F

Tritanomaly (50%)

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

#25030D

Grayscale (luminance)

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

#0F0F0F

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.

#1C0A10

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 0.01850 G 0.00091 B 0.00518

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 0.13026 G 0.01931 B 0.06197

Linear Display P3

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

R 0.01538 G 0.00149 B 0.00510

CIE xyY

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

x 0.462 y 0.258 Y 0.496

CMY

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

C % 85.490 M % 98.824 Y % 93.725

Binary RGB

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

00100101 00000011 00010000