Medium Red (#B10304)

The hex code for Medium Red is #B10304. It is rgb(177, 3, 4) in RGB, hsl(360, 97%, 35%) in HSL, and about cmyk(0%, 98%, 98%, 31%) in CMYK — a dark red. White text is the more readable choice on this background.

#B10304

HEX#B10304

RGBrgb(177, 3, 4)

HSLhsl(360, 97%, 35%)

HSVhsv(360, 98%, 69%)

CMYKcmyk(0%, 98%, 98%, 31%)

OKLCHoklch(47.9% 0.195 28.9)

LABlab(37.58% 61.14 51.44)

LCHlch(37.58% 79.90 40.07)

Colors Closest to Medium Red

Medium Red is a registered color name. These are the named colors nearest to it, measured as CIE76 distance in CIELAB — a perceptual scale, so the ordering matches what the eye sees rather than how close the raw RGB numbers happen to sit.

Mordant Red 19#AE0C00ΔE 2.12 International Orange (Engineering)#BA160CΔE 2.9 Tomato Sauce#B21807ΔE 2.96 Rufous#A81C07ΔE 6.99 Traffic Red#C1121CΔE 7.71 Venetian Red#C80815ΔE 7.73

Browse the full index of named colors A-Z or every red in the library.

#B10304 Channel Values

How Medium Red breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

Model	Channels	Notes
RGB	R 177 · G 3 · B 4	8-bit channels as sent to the display
HSL	H 360° · S 97% · L 35%	Easiest model for building lighter and darker variants
HSV	H 360° · S 98% · V 69%	Matches the picker in most design tools
CMYK	C 0% · M 98% · Y 98% · K 31%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	7.28:1 vs white · 2.88:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a Medium Red background. AA requires 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Contrast is one check, not a full accessibility review.

TextWhite text7.28:1AA normal ✓AA large ✓AAA normal ✓

TextBlack text2.88:1AA normal ✗AA large ✗AAA normal ✗

Need a specific ratio against another background? Open #B10304 in the contrast checker.

Colors That Go With Medium Red

Pairings derived from color-wheel relationships. The complementary color sits opposite Medium Red; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base

Complementary

Analogous

Analogous

Triadic

Triadic

Split comp.

Split comp.

Tints & Shades of Medium Red

Lighter tints and darker shades built by moving the lightness channel while holding hue and saturation, which is what you want for hover states, backgrounds, and text variants.

Tints

Shades

Want a full 50-950 ramp with semantic roles? Generate design tokens from #B10304.

How Medium Red Looks with Color Vision Deficiency

Simulated with the Viénot, Brettel & Mollon LMS projection model. Anomalous types are rendered as partial versions of the matching dichromacy, which is an approximation rather than a per-person clinical model.

Typical#B10304

Protanopia#4E4E00

Protanomaly#813C00

Deuteranopia#6B6B00

Deuteranomaly#8C5400

Tritanopia#B10303

Tritanomaly#B10303

Achromatopsia#575757

Test a full palette in the color blindness simulator.

Using #B10304 in Code

Copy-ready declarations for the places this color usually ends up.

CSS custom property--medium-red: #B10304;

CSS backgroundbackground-color: #B10304;

Tailwind configcolors: { 'medium-red': '#B10304' }

SwiftUIColor(red: 0.694, green: 0.012, blue: 0.016)

Android XML<color name="medium_red">#B10304</color>

SVG fillfill="#B10304"

More Red Colors

Medium Red sits in the redfamily. These are its neighbours across that family's full range, each with its own breakdown.

b11226 b00b1e b21807 af593e b22222 af4035 b30000 ae2029 b57281 ae0c00 b76e79 ad6f69 c7001e d9603b e62828 f49f9f fd3a4a ff3855 ff8a8a ffd1d9 3b2f2f 5e1916 7c4b4b 995c5c

#B10304 Frequently Asked Questions

What is the hex code for Medium Red?

The hex code for Medium Red is #B10304. That is rgb(177, 3, 4) in RGB, hsl(360, 97%, 35%) in HSL, and approximately cmyk(0%, 98%, 98%, 31%) in CMYK.

What is the RGB value of #B10304?

#B10304 is rgb(177, 3, 4) — red 177, green 3, and blue 4 on the 0-255 scale.

What is the CMYK value of #B10304?

#B10304 converts to approximately cmyk(0%, 98%, 98%, 31%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #B10304 be black or white?

White text is the more readable choice. #B10304 scores 7.28:1 against white and 2.88:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #B10304 as a CSS color keyword?

No. #B10304 is not one of the CSS color keywords, so it has to be written as a hex, rgb() or hsl() value. The closest keyword is firebrick (#B22222) at a CIE76 distance of 13.26, which is visibly different.

Open Medium Red in a Tool

Hex to RGB Hex to HSL Hex to CMYK Hex to OKLCH Hex to Pantone Build a palette Make a gradient

Keep exploring: every red in the color library, the guide to shades of red, or the full color library.