Resolution Blue (#002387)

The hex code for Resolution Blue is #002387. It is rgb(0, 35, 135) in RGB, hsl(224, 100%, 26%) in HSL, and about cmyk(100%, 74%, 0%, 47%) in CMYK — a dark blue. White text is the more readable choice on this background.

#002387

HEX#002387

RGBrgb(0, 35, 135)

HSLhsl(224, 100%, 26%)

HSVhsv(224, 100%, 53%)

CMYKcmyk(100%, 74%, 0%, 47%)

OKLCHoklch(32.2% 0.169 263.4)

LABlab(18.69% 25.20 -59.39)

LCHlch(18.69% 64.51 292.99)

Colors Closest to Resolution Blue

Resolution 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.

Smalt (Dark Powder Blue)#003399ΔE 7.39 Imperial Blue#002395ΔE 8.02 Blue (Pigment)#333399ΔE 8.62 Cosmic Cobalt#2E2D88ΔE 9.07 Midnight Blue#191970ΔE 9.31 Egyptian Blue#1034A6ΔE 9.97

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

#002387 Channel Values

How Resolution 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 35 · B 135	8-bit channels as sent to the display
HSL	H 224° · S 100% · L 26%	Easiest model for building lighter and darker variants
HSV	H 224° · S 100% · V 53%	Matches the picker in most design tools
CMYK	C 100% · M 74% · Y 0% · K 47%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	13.21:1 vs white · 1.59:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a Resolution 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 text13.21:1AA normal ✓AA large ✓AAA normal ✓

TextBlack text1.59:1AA normal ✗AA large ✗AAA normal ✗

Need a specific ratio against another background? Open #002387 in the contrast checker.

Colors That Go With Resolution Blue

Pairings derived from color-wheel relationships. The complementary color sits opposite Resolution 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 Resolution 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 #002387.

How Resolution 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#002387

Protanopia#1F1F87

Protanomaly#172187

Deuteranopia#1B1B87

Deuteranomaly#131F87

Tritanopia#003C3C

Tritanomaly#003463

Achromatopsia#303030

Test a full palette in the color blindness simulator.

Using #002387 in Code

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

CSS custom property--resolution-blue: #002387;

CSS backgroundbackground-color: #002387;

Tailwind configcolors: { 'resolution-blue': '#002387' }

SwiftUIColor(red: 0.000, green: 0.137, blue: 0.529)

Android XML<color name="resolution_blue">#002387</color>

SVG fillfill="#002387"

More Blue Colors

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

002395 002147 002e57 001c3d 003061 001c38 003153 0018a8 003366 0014a8 003399 000f89 007dfa 0f52ba 1d293d 2a3439 3737d7 4f39f6 657586 7ba4ef 9999ff bbcce2 d7e1ee f5faff

#002387 Frequently Asked Questions

What is the hex code for Resolution Blue?

The hex code for Resolution Blue is #002387. That is rgb(0, 35, 135) in RGB, hsl(224, 100%, 26%) in HSL, and approximately cmyk(100%, 74%, 0%, 47%) in CMYK.

What is the RGB value of #002387?

#002387 is rgb(0, 35, 135) — red 0, green 35, and blue 135 on the 0-255 scale.

What is the CMYK value of #002387?

#002387 converts to approximately cmyk(100%, 74%, 0%, 47%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #002387 be black or white?

White text is the more readable choice. #002387 scores 13.21:1 against white and 1.59:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #002387 as a CSS color keyword?

No. #002387 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 midnightblue (#191970) at a CIE76 distance of 9.31, which is clearly related but distinguishable side by side.

Open Resolution 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.