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#1518CB Color

#1518CB is rgb(21, 24, 203) in RGB, hsl(239, 81%, 44%) in HSL, and about cmyk(90%, 88%, 0%, 20%) 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 8.58. White text is the more readable choice on this background.

#1518CB
HEX#1518CB
RGBrgb(21, 24, 203)
HSLhsl(239, 81%, 44%)
HSVhsv(239, 90%, 80%)
CMYKcmyk(90%, 88%, 0%, 20%)
OKLCHoklch(39.8% 0.252 266.6)
LABlab(25.08% 51.59 -89.80)
LCHlch(25.08% 103.56 299.88)

What #1518CB 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 #1518CB, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Medium Blue#0000CDΔE 8.58Palatinate Blue#273BE2ΔE 13.47Neon Blue#1B03A3ΔE 14.31Iridescent Indigo#3C32CDΔE 14.72Zaffer (Zaffre)#0014A8ΔE 15.11Duke Blue#00009CΔE 16.05

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

#1518CB Channel Values

How #1518CB 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 21 · G 24 · B 2038-bit channels as sent to the display
HSLH 239° · S 81% · L 44%Easiest model for building lighter and darker variants
HSVH 239° · S 90% · V 80%Matches the picker in most design tools
CMYKC 90% · M 88% · Y 0% · K 20%Approximate ink mix; confirm with an ICC profile before printing
Luminance10.37:1 vs white · 2.02:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #1518CB 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 text10.37:1AA normal AA large AAA normal
Fails AABlack text2.02:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #1518CB in the contrast checker.

Colors That Go With #1518CB

Pairings derived from color-wheel relationships. The complementary color sits opposite #1518CB; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#1518CB
Complementary
#CBC815
Analogous
#1573CB
Analogous
#6D15CB
Triadic
#CB1518
Triadic
#18CB15
Split comp.
#CB6D15
Split comp.
#73CB15

Tints & Shades of #1518CB

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

#2125E8
#4245EB
#6769EF
#8C8DF3
#B1B2F7
#D1D2FA

Shades

#1215AF
#101298
#0D0F7D
#0A0C61
#070845
#05062E

Want a full 50-950 ramp with semantic roles? Generate design tokens from #1518CB.

How #1518CB 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#1518CB
Protanopia#1818CB
Protanomaly#1718CB
Deuteranopia#1717CB
Deuteranomaly#1617CB
Tritanopia#005151
Tritanomaly#004192
Achromatopsia#404040

Test a full palette in the color blindness simulator.

Using #1518CB in Code

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

CSS custom property--color-1518cb: #1518CB;
CSS backgroundbackground-color: #1518CB;
Tailwind configcolors: { 'color-1518cb': '#1518CB' }
SwiftUIColor(red: 0.082, green: 0.094, blue: 0.796)
Android XML<color name="color_1518cb">#1518CB</color>
SVG fillfill="#1518CB"

More Blue Colors

#1518CB sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#1518CB Frequently Asked Questions

What color is #1518CB?

#1518CB is a mid-tone blue — rgb(21, 24, 203) in RGB and hsl(239, 81%, 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 8.58.

What is the RGB value of #1518CB?

#1518CB is rgb(21, 24, 203) — red 21, green 24, and blue 203 on the 0-255 scale.

What is the CMYK value of #1518CB?

#1518CB converts to approximately cmyk(90%, 88%, 0%, 20%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #1518CB be black or white?

White text is the more readable choice. #1518CB scores 10.37:1 against white and 2.02:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #1518CB as a CSS color keyword?

No. #1518CB 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 8.58, which is clearly related but distinguishable side by side.

Open #1518CB 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.