#312C85 Color

#312C85 is rgb(49, 44, 133) in RGB, hsl(243, 50%, 35%) in HSL, and about cmyk(63%, 67%, 0%, 48%) in CMYK. It has no registered color name of its own — the closest is Cosmic Cobalt (#2E2D88), below the threshold most people can see at ΔE 1.56. White text is the more readable choice on this background.

#312C85

HEX#312C85

RGBrgb(49, 44, 133)

HSLhsl(243, 50%, 35%)

HSVhsv(243, 67%, 52%)

CMYKcmyk(63%, 67%, 0%, 48%)

OKLCHoklch(35.9% 0.144 278.8)

LABlab(23.37% 24.66 -50.32)

LCHlch(23.37% 56.04 296.10)

What #312C85 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 #312C85, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Cosmic Cobalt#2E2D88ΔE 1.56 St. Patrick's Blue#23297AΔE 5.53 Blue (Pigment)#333399ΔE 7.76 Midnight Blue#191970ΔE 8.56 Spanish Violet#4C2882ΔE 9.54 Resolution Blue#002387ΔE 10.22

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

#312C85 Channel Values

How #312C85 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 49 · G 44 · B 133	8-bit channels as sent to the display
HSL	H 243° · S 50% · L 35%	Easiest model for building lighter and darker variants
HSV	H 243° · S 67% · V 52%	Matches the picker in most design tools
CMYK	C 63% · M 67% · Y 0% · K 48%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	11.48:1 vs white · 1.83:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #312C85 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 text11.48:1AA normal AA large AAA normal

Fails AABlack text1.83:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #312C85 in the contrast checker.

Colors That Go With #312C85

Pairings derived from color-wheel relationships. The complementary color sits opposite #312C85; 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 #312C85

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 #312C85.

How #312C85 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#312C85

Protanopia#2D2D85

Protanomaly#2F2D85

Deuteranopia#2E2E85

Deuteranomaly#2F2D85

Tritanopia#0D4040

Tritanomaly#203963

Achromatopsia#393939

Test a full palette in the color blindness simulator.

Using #312C85 in Code

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

CSS custom property--color-312c85: #312C85;

CSS backgroundbackground-color: #312C85;

Tailwind configcolors: { 'color-312c85': '#312C85' }

SwiftUIColor(red: 0.192, green: 0.173, blue: 0.522)

Android XML<color name="color_312c85">#312C85</color>

SVG fillfill="#312C85"

More Blue Colors

#312C85 sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

314158 2f3e4d 318ce7 2e5894 324ab2 2e5090 32527b 2e2d88 3300ff 2d14b8 333366 2c3e50 4166f5 54b9f8 6a7282 85b4ff a1caf1 c2c9d1 dfe9fb 000038 003061 01386a 1034a6 1e174a

#312C85 Frequently Asked Questions

What color is #312C85?

#312C85 is a dark blue — rgb(49, 44, 133) in RGB and hsl(243, 50%, 35%) in HSL. It carries no registered color name of its own; the closest named color is Cosmic Cobalt (#2E2D88), which is below the threshold most people can see at a CIE76 distance of 1.56.

What is the RGB value of #312C85?

#312C85 is rgb(49, 44, 133) — red 49, green 44, and blue 133 on the 0-255 scale.

What is the CMYK value of #312C85?

#312C85 converts to approximately cmyk(63%, 67%, 0%, 48%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #312C85 be black or white?

White text is the more readable choice. #312C85 scores 11.48:1 against white and 1.83:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #312C85 as a CSS color keyword?

No. #312C85 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 8.56, which is clearly related but distinguishable side by side.

Open #312C85 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.