#C21D00 Color

#C21D00 is rgb(194, 29, 0) in RGB, hsl(9, 100%, 38%) in HSL, and about cmyk(0%, 85%, 100%, 24%) in CMYK. It has no registered color name of its own — the closest is International Orange (Engineering) (#BA160C), clearly related but distinguishable side by side at ΔE 6.55. White text is the more readable choice on this background.

#C21D00

HEX#C21D00

RGBrgb(194, 29, 0)

HSLhsl(9, 100%, 38%)

HSVhsv(9, 100%, 76%)

CMYKcmyk(0%, 85%, 100%, 24%)

OKLCHoklch(52.2% 0.2 31.5)

LABlab(42.59% 61.97 57.15)

LCHlch(42.59% 84.30 42.68)

What #C21D00 Is Called

Most hex codes have no name: there are 16.7 million of them and a few thousand registered names. These are the named colors nearest to #C21D00, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

International Orange (Engineering)#BA160CΔE 6.55 Lemon Iced Tea#BD3000ΔE 6.62 Mordant Red 19#AE0C00ΔE 7.59 Medium Red#B10304ΔE 7.64 Tomato Sauce#B21807ΔE 8.07 Venetian Red#C80815ΔE 8.12

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

#C21D00 Channel Values

How #C21D00 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 194 · G 29 · B 0	8-bit channels as sent to the display
HSL	H 9° · S 100% · L 38%	Easiest model for building lighter and darker variants
HSV	H 9° · S 100% · V 76%	Matches the picker in most design tools
CMYK	C 0% · M 85% · Y 100% · K 24%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	6.05:1 vs white · 3.47:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #C21D00 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 text6.05:1AA normal AA large AAA normal

Fails AABlack text3.47:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #C21D00 in the contrast checker.

Colors That Go With #C21D00

Pairings derived from color-wheel relationships. The complementary color sits opposite #C21D00; 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 #C21D00

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 #C21D00.

How #C21D00 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#C21D00

Protanopia#5A5A00

Protanomaly#904900

Deuteranopia#787800

Deuteranomaly#9B6000

Tritanopia#C21B1B

Tritanomaly#C21C13

Achromatopsia#636363

Test a full palette in the color blindness simulator.

Using #C21D00 in Code

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

CSS custom property--color-c21d00: #C21D00;

CSS backgroundbackground-color: #C21D00;

Tailwind configcolors: { 'color-c21d00': '#C21D00' }

SwiftUIColor(red: 0.761, green: 0.114, blue: 0.000)

Android XML<color name="color_c21d00">#C21D00</color>

SVG fillfill="#C21D00"

More Red Colors

#C21D00 sits in the red family. These are its neighbours across that family's full range, each with its own breakdown.

c32148 c1121c c33c3c c10007 c40233 c09999 c41717 c08081 c41e3a c0362c c4aead bfafb2 cf1b07 e4717a f02400 fb607f ff2603 ff6e4a ffc7cf 1f0008 52000c 733635 954535 aa381e

#C21D00 Frequently Asked Questions

What color is #C21D00?

#C21D00 is a dark red — rgb(194, 29, 0) in RGB and hsl(9, 100%, 38%) in HSL. It carries no registered color name of its own; the closest named color is International Orange (Engineering) (#BA160C), which is clearly related but distinguishable side by side at a CIE76 distance of 6.55.

What is the RGB value of #C21D00?

#C21D00 is rgb(194, 29, 0) — red 194, green 29, and blue 0 on the 0-255 scale.

What is the CMYK value of #C21D00?

#C21D00 converts to approximately cmyk(0%, 85%, 100%, 24%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #C21D00 be black or white?

White text is the more readable choice. #C21D00 scores 6.05:1 against white and 3.47:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #C21D00 as a CSS color keyword?

No. #C21D00 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 18.95, which is visibly different.

Open #C21D00 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.