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#121BCE Color

#121BCE is rgb(18, 27, 206) in RGB, hsl(237, 84%, 44%) in HSL, and about cmyk(91%, 87%, 0%, 19%) 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 8.79. White text is the more readable choice on this background.

#121BCE
HEX#121BCE
RGBrgb(18, 27, 206)
HSLhsl(237, 84%, 44%)
HSVhsv(237, 91%, 81%)
CMYKcmyk(91%, 87%, 0%, 19%)
OKLCHoklch(40.4% 0.254 266.1)
LABlab(25.75% 51.11 -90.44)
LCHlch(25.75% 103.88 299.47)

What #121BCE 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 #121BCE, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Medium Blue#0000CDΔE 8.79Palatinate Blue#273BE2ΔE 12.8Iridescent Indigo#3C32CDΔE 14.62Neon Blue#1B03A3ΔE 15.09Zaffer (Zaffre)#0014A8ΔE 15.61Duke Blue#00009CΔE 16.81

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

#121BCE Channel Values

How #121BCE 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 18 · G 27 · B 2068-bit channels as sent to the display
HSLH 237° · S 84% · L 44%Easiest model for building lighter and darker variants
HSVH 237° · S 91% · V 81%Matches the picker in most design tools
CMYKC 91% · M 87% · Y 0% · K 19%Approximate ink mix; confirm with an ICC profile before printing
Luminance10.13:1 vs white · 2.07:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #121BCE 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 text10.13:1AA normal AA large AAA normal
Fails AABlack text2.07:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #121BCE in the contrast checker.

Colors That Go With #121BCE

Pairings derived from color-wheel relationships. The complementary color sits opposite #121BCE; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#121BCE
Complementary
#CEC512
Analogous
#127ACE
Analogous
#6712CE
Triadic
#CE121B
Triadic
#1BCE12
Split comp.
#CE6712
Split comp.
#7ACE12

Tints & Shades of #121BCE

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

#1E28EB
#3F47EE
#646BF2
#8A8FF5
#AFB3F8
#D0D2FB

Shades

#1018B2
#0D159B
#0B117F
#090D63
#060946
#04062F

Want a full 50-950 ramp with semantic roles? Generate design tokens from #121BCE.

How #121BCE 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#121BCE
Protanopia#1A1ACE
Protanomaly#171ACE
Deuteranopia#1818CE
Deuteranomaly#1619CE
Tritanopia#005353
Tritanomaly#004395
Achromatopsia#424242

Test a full palette in the color blindness simulator.

Using #121BCE in Code

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

CSS custom property--color-121bce: #121BCE;
CSS backgroundbackground-color: #121BCE;
Tailwind configcolors: { 'color-121bce': '#121BCE' }
SwiftUIColor(red: 0.071, green: 0.106, blue: 0.808)
Android XML<color name="color_121bce">#121BCE</color>
SVG fillfill="#121BCE"

More Blue Colors

#121BCE sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#121BCE Frequently Asked Questions

What color is #121BCE?

#121BCE is a mid-tone blue — rgb(18, 27, 206) in RGB and hsl(237, 84%, 44%) 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 8.79.

What is the RGB value of #121BCE?

#121BCE is rgb(18, 27, 206) — red 18, green 27, and blue 206 on the 0-255 scale.

What is the CMYK value of #121BCE?

#121BCE converts to approximately cmyk(91%, 87%, 0%, 19%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #121BCE be black or white?

White text is the more readable choice. #121BCE scores 10.13:1 against white and 2.07:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #121BCE as a CSS color keyword?

No. #121BCE 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 8.79, which is clearly related but distinguishable side by side.

Open #121BCE 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.