Cosmic Cobalt (#2E2D88)

The hex code for Cosmic Cobalt is #2E2D88. It is rgb(46, 45, 136) in RGB, hsl(241, 50%, 35%) in HSL, and about cmyk(66%, 67%, 0%, 47%) in CMYK — a dark blue. White text is the more readable choice on this background.

#2E2D88

HEX#2E2D88

RGBrgb(46, 45, 136)

HSLhsl(241, 50%, 35%)

HSVhsv(241, 67%, 53%)

CMYKcmyk(66%, 67%, 0%, 47%)

OKLCHoklch(36.1% 0.147 276.6)

LABlab(23.61% 24.32 -51.82)

LCHlch(23.61% 57.24 295.14)

Colors Closest to Cosmic Cobalt

Cosmic Cobalt 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.

St. Patrick's Blue#23297AΔE 6.21 Blue (Pigment)#333399ΔE 6.5 Midnight Blue#191970ΔE 8.88 Resolution Blue#002387ΔE 9.07 Smalt (Dark Powder Blue)#003399ΔE 9.51 Spanish Violet#4C2882ΔE 10.63

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

#2E2D88 Channel Values

How Cosmic Cobalt 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 46 · G 45 · B 136	8-bit channels as sent to the display
HSL	H 241° · S 50% · L 35%	Easiest model for building lighter and darker variants
HSV	H 241° · S 67% · V 53%	Matches the picker in most design tools
CMYK	C 66% · M 67% · Y 0% · K 47%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	11.37:1 vs white · 1.85:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a Cosmic Cobalt 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 text11.37:1AA normal ✓AA large ✓AAA normal ✓

TextBlack text1.85:1AA normal ✗AA large ✗AAA normal ✗

Need a specific ratio against another background? Open #2E2D88 in the contrast checker.

Colors That Go With Cosmic Cobalt

Pairings derived from color-wheel relationships. The complementary color sits opposite Cosmic Cobalt; 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 Cosmic Cobalt

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 #2E2D88.

How Cosmic Cobalt 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#2E2D88

Protanopia#2D2D88

Protanomaly#2E2D88

Deuteranopia#2D2D88

Deuteranomaly#2E2D88

Tritanopia#004242

Tritanomaly#1A3A65

Achromatopsia#3A3A3A

Test a full palette in the color blindness simulator.

Using #2E2D88 in Code

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

CSS custom property--cosmic-cobalt: #2E2D88;

CSS backgroundbackground-color: #2E2D88;

Tailwind configcolors: { 'cosmic-cobalt': '#2E2D88' }

SwiftUIColor(red: 0.180, green: 0.176, blue: 0.533)

Android XML<color name="cosmic_cobalt">#2E2D88</color>

SVG fillfill="#2E2D88"

More Blue Colors

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

2e5090 2d14b8 2e5894 2c2555 312c85 2b7fff 314158 2b506e 318ce7 2b2bc5 324ab2 2a52be 3d729e 536878 66ccff 8585ff a091f3 c1cef5 dee9f2 00002e 002387 007dfa 0f52ba 1d293d

#2E2D88 Frequently Asked Questions

What is the hex code for Cosmic Cobalt?

The hex code for Cosmic Cobalt is #2E2D88. That is rgb(46, 45, 136) in RGB, hsl(241, 50%, 35%) in HSL, and approximately cmyk(66%, 67%, 0%, 47%) in CMYK.

What is the RGB value of #2E2D88?

#2E2D88 is rgb(46, 45, 136) — red 46, green 45, and blue 136 on the 0-255 scale.

What is the CMYK value of #2E2D88?

#2E2D88 converts to approximately cmyk(66%, 67%, 0%, 47%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #2E2D88 be black or white?

White text is the more readable choice. #2E2D88 scores 11.37:1 against white and 1.85:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #2E2D88 as a CSS color keyword?

No. #2E2D88 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 8.88, which is clearly related but distinguishable side by side.

Open Cosmic Cobalt in a Tool

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