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#3F0FDB Color

#3F0FDB is rgb(63, 15, 219) in RGB, hsl(254, 87%, 46%) in HSL, and about cmyk(71%, 93%, 0%, 14%) in CMYK. It has no registered color name of its own — the closest is Medium Blue (#0000CD), clearly related but distinguishable side by side at ΔE 6.81. White text is the more readable choice on this background.

#3F0FDB
HEX#3F0FDB
RGBrgb(63, 15, 219)
HSLhsl(254, 87%, 46%)
HSVhsv(254, 93%, 86%)
CMYKcmyk(71%, 93%, 0%, 14%)
OKLCHoklch(43.5% 0.262 276.6)
LABlab(28.75% 60.06 -92.87)
LCHlch(28.75% 110.60 302.89)

What #3F0FDB 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 #3F0FDB, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Medium Blue#0000CDΔE 6.81Ultramarine Blue(caran D'ache)#2111EFΔE 10.78Han Purple#5218FAΔE 11.33Electric Indigo#6F00FFΔE 16.68Poison Purple#7F01FEΔE 17.81Indigo (Color Wheel)#4000FFΔE 17.88

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

#3F0FDB Channel Values

How #3F0FDB breaks down in each color model. Hue is measured in degrees around the color wheel; saturation, lightness, and the CMYK inks are percentages.

ModelChannelsNotes
RGBR 63 · G 15 · B 2198-bit channels as sent to the display
HSLH 254° · S 87% · L 46%Easiest model for building lighter and darker variants
HSVH 254° · S 93% · V 86%Matches the picker in most design tools
CMYKC 71% · M 93% · Y 0% · K 14%Approximate ink mix; confirm with an ICC profile before printing
Luminance9.12:1 vs white · 2.3:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #3F0FDB 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 text9.12:1AA normal AA large AAA normal
Fails AABlack text2.3:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #3F0FDB in the contrast checker.

Colors That Go With #3F0FDB

Pairings derived from color-wheel relationships. The complementary color sits opposite #3F0FDB; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#3F0FDB
Complementary
#ACDB0F
Analogous
#0F46DB
Analogous
#A50FDB
Triadic
#DB3F0F
Triadic
#0FDB3F
Split comp.
#DBA50F
Split comp.
#46DB0F

Tints & Shades of #3F0FDB

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

#501FEF
#6D45F2
#8866F4
#A58DF7
#C0AEF9
#DDD4FC

Shades

#370DBF
#2E0BA2
#260986
#1E0769
#16054C
#0E0330

Want a full 50-950 ramp with semantic roles? Generate design tokens from #3F0FDB.

How #3F0FDB 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#3F0FDB
Protanopia#1D1DDB
Protanomaly#2E18DB
Deuteranopia#2626DB
Deuteranomaly#321FDB
Tritanopia#005656
Tritanomaly#00449D
Achromatopsia#484848

Test a full palette in the color blindness simulator.

Using #3F0FDB in Code

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

CSS custom property--color-3f0fdb: #3F0FDB;
CSS backgroundbackground-color: #3F0FDB;
Tailwind configcolors: { 'color-3f0fdb': '#3F0FDB' }
SwiftUIColor(red: 0.247, green: 0.059, blue: 0.859)
Android XML<color name="color_3f0fdb">#3F0FDB</color>
SVG fillfill="#3F0FDB"

More Blue Colors

#3F0FDB sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#3F0FDB Frequently Asked Questions

What color is #3F0FDB?

#3F0FDB is a mid-tone blue — rgb(63, 15, 219) in RGB and hsl(254, 87%, 46%) in HSL. It carries no registered color name of its own; the closest named color is Medium Blue (#0000CD), which is clearly related but distinguishable side by side at a CIE76 distance of 6.81.

What is the RGB value of #3F0FDB?

#3F0FDB is rgb(63, 15, 219) — red 63, green 15, and blue 219 on the 0-255 scale.

What is the CMYK value of #3F0FDB?

#3F0FDB converts to approximately cmyk(71%, 93%, 0%, 14%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #3F0FDB be black or white?

White text is the more readable choice. #3F0FDB scores 9.12:1 against white and 2.3:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #3F0FDB as a CSS color keyword?

No. #3F0FDB 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 6.81, which is clearly related but distinguishable side by side.

Open #3F0FDB in a Tool

Hex to RGBHex to HSLHex to CMYKHex to OKLCHHex to PantoneBuild a paletteMake a gradient

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