#3838FF Color

#3838FF is rgb(56, 56, 255) in RGB, hsl(240, 100%, 61%) in HSL, and about cmyk(78%, 78%, 0%, 0%) in CMYK. It has no registered color name of its own — the closest is Ultramarine Blue(caran D'ache) (#2111EF), visibly different at ΔE 13.19. White text is the more readable choice on this background.

#3838FF

HEX#3838FF

RGBrgb(56, 56, 255)

HSLhsl(240, 100%, 61%)

HSVhsv(240, 78%, 100%)

CMYKcmyk(78%, 78%, 0%, 0%)

OKLCHoklch(50.5% 0.278 270.6)

LABlab(37.44% 53.04 -98.85)

LCHlch(37.44% 112.18 298.22)

What #3838FF 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 #3838FF, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Ultramarine Blue(caran D'ache)#2111EFΔE 13.19 Han Purple#5218FAΔE 13.24 Palatinate Blue#273BE2ΔE 16 Medium Blue#0000CDΔE 16.03 Indigo (Color Wheel)#4000FFΔE 19.53 Ultramarine#3F00FFΔE 19.57

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

#3838FF Channel Values

How #3838FF 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 56 · G 56 · B 255	8-bit channels as sent to the display
HSL	H 240° · S 100% · L 61%	Easiest model for building lighter and darker variants
HSV	H 240° · S 78% · V 100%	Matches the picker in most design tools
CMYK	C 78% · M 78% · Y 0% · K 0%	Approximate ink mix; confirm with an ICC profile before printing
Luminance	6.61:1 vs white · 3.18:1 vs black	WCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #3838FF 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 text6.61:1AA normal AA large AAA normal

Fails AABlack text3.18:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #3838FF in the contrast checker.

Colors That Go With #3838FF

Pairings derived from color-wheel relationships. The complementary color sits opposite #3838FF; 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 #3838FF

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 #3838FF.

How #3838FF 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#3838FF

Protanopia#3838FF

Protanomaly#3838FF

Deuteranopia#3838FF

Deuteranomaly#3838FF

Tritanopia#007070

Tritanomaly#005EBB

Achromatopsia#5D5D5D

Test a full palette in the color blindness simulator.

Using #3838FF in Code

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

CSS custom property--color-3838ff: #3838FF;

CSS backgroundbackground-color: #3838FF;

Tailwind configcolors: { 'color-3838ff': '#3838FF' }

SwiftUIColor(red: 0.220, green: 0.220, blue: 1.000)

Android XML<color name="color_3838ff">#3838FF</color>

SVG fillfill="#3838FF"

More Blue Colors

#3838FF sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

3b77e8 374f6b 3c32cd 374049 3c69e7 3737d7 3d729e 372aac 3d9eff 372a89 3e3579 3719e1 4f69c6 666699 7c86ff 9999ff bcb5e8 dbe4eb f8f8ff 0014a8 0077be 0e518d 1a5ddb 2887c8

#3838FF Frequently Asked Questions

What color is #3838FF?

#3838FF is a light blue — rgb(56, 56, 255) in RGB and hsl(240, 100%, 61%) in HSL. It carries no registered color name of its own; the closest named color is Ultramarine Blue(caran D'ache) (#2111EF), which is visibly different at a CIE76 distance of 13.19.

What is the RGB value of #3838FF?

#3838FF is rgb(56, 56, 255) — red 56, green 56, and blue 255 on the 0-255 scale.

What is the CMYK value of #3838FF?

#3838FF converts to approximately cmyk(78%, 78%, 0%, 0%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #3838FF be black or white?

White text is the more readable choice. #3838FF scores 6.61:1 against white and 3.18:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #3838FF as a CSS color keyword?

No. #3838FF 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 mediumblue (#0000CD) at a CIE76 distance of 16.03, which is visibly different.

Open #3838FF 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.