True Blue (#0073CF)

The hex code for True Blue is #0073CF. It is rgb(0, 115, 207) in RGB, hsl(207, 100%, 41%) in HSL, and about cmyk(100%, 44%, 0%, 19%) in CMYK — a mid-tone blue. White text is the more readable choice on this background.

#0073CF

HEX#0073CF

RGBrgb(0, 115, 207)

HSLhsl(207, 100%, 41%)

HSVhsv(207, 100%, 81%)

CMYKcmyk(100%, 44%, 0%, 19%)

OKLCHoklch(55.3% 0.166 252.1)

LABlab(47.07% 0.18 -56.13)

LCHlch(47.07% 56.13 270.19)

Colors Closest to True Blue

True Blue 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.

Bright Navy Blue#1974D2ΔE 1.87 Microsoft Edge Blue#0078D7ΔE 2.42 Green-blue#1164B4ΔE 8.55 Denim#1560BDΔE 8.88 Bleu de France#318CE7ΔE 9.87 Han Blue#446CCFΔE 11

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

#0073CF Channel Values

How True Blue 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 0 · G 115 · B 207	8-bit channels as sent to the display
HSL	H 207° · S 100% · L 41%	Easiest model for building lighter and darker variants
HSV	H 207° · S 100% · V 81%	Matches the picker in most design tools
CMYK	C 100% · M 44% · Y 0% · K 19%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	4.82:1 vs white · 4.35:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a True Blue 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 text4.82:1AA normal ✓AA large ✓AAA normal ✗

TextBlack text4.35:1AA normal ✗AA large ✓AAA normal ✗

Need a specific ratio against another background? Open #0073CF in the contrast checker.

Colors That Go With True Blue

Pairings derived from color-wheel relationships. The complementary color sits opposite True Blue; 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 True Blue

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 #0073CF.

How True Blue 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#0073CF

Protanopia#6969CF

Protanomaly#526DCF

Deuteranopia#5F5FD0

Deuteranomaly#4A68CF

Tritanopia#008383

Tritanomaly#007DA7

Achromatopsia#727272

Test a full palette in the color blindness simulator.

Using #0073CF in Code

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

CSS custom property--true-blue: #0073CF;

CSS backgroundbackground-color: #0073CF;

Tailwind configcolors: { 'true-blue': '#0073CF' }

SwiftUIColor(red: 0.000, green: 0.451, blue: 0.812)

Android XML<color name="true_blue">#0073CF</color>

SVG fillfill="#0073CF"

More Blue Colors

True Blue sits in the bluefamily. These are its neighbours across that family's full range, each with its own breakdown.

0073e6 0072bb 0077be 0070b8 0078d7 006db0 0078e0 0069d1 007bb8 0069a8 007dfa 0067a5 0e0e48 193cb8 272e34 364153 4b61d1 615fff 77a5ca 93d3fb b3b3ff d1d6dc f0f9ff 0000cd

#0073CF Frequently Asked Questions

What is the hex code for True Blue?

The hex code for True Blue is #0073CF. That is rgb(0, 115, 207) in RGB, hsl(207, 100%, 41%) in HSL, and approximately cmyk(100%, 44%, 0%, 19%) in CMYK.

What is the RGB value of #0073CF?

#0073CF is rgb(0, 115, 207) — red 0, green 115, and blue 207 on the 0-255 scale.

What is the CMYK value of #0073CF?

#0073CF converts to approximately cmyk(100%, 44%, 0%, 19%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #0073CF be black or white?

White text is the more readable choice. #0073CF scores 4.82:1 against white and 4.35:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #0073CF as a CSS color keyword?

No. #0073CF 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 dodgerblue (#1E90FF) at a CIE76 distance of 14.24, which is visibly different.

Open True Blue 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 blue in the color library, the guide to shades of blue, or the full color library.