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#0D187D Color

#0D187D is rgb(13, 24, 125) in RGB, hsl(234, 81%, 27%) in HSL, and about cmyk(90%, 81%, 0%, 51%) in CMYK. It has no registered color name of its own — the closest is Resolution Blue (#002387), clearly related but distinguishable side by side at ΔE 5.48. White text is the more readable choice on this background.

#0D187D
HEX#0D187D
RGBrgb(13, 24, 125)
HSLhsl(234, 81%, 27%)
HSVhsv(234, 90%, 49%)
CMYKcmyk(90%, 81%, 0%, 51%)
OKLCHoklch(29.6% 0.165 267.3)
LABlab(15.42% 29.50 -58.46)
LCHlch(15.42% 65.48 296.78)

What #0D187D 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 #0D187D, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Resolution Blue#002387ΔE 5.48Persian Indigo#32127AΔE 8.35Midnight Blue#191970ΔE 8.36Imperial Blue#002395ΔE 8.63Samsung Blue#12279EΔE 11.44Phthalo Blue#000F89ΔE 11.64

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

#0D187D Channel Values

How #0D187D 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 13 · G 24 · B 1258-bit channels as sent to the display
HSLH 234° · S 81% · L 27%Easiest model for building lighter and darker variants
HSVH 234° · S 90% · V 49%Matches the picker in most design tools
CMYKC 90% · M 81% · Y 0% · K 51%Approximate ink mix; confirm with an ICC profile before printing
Luminance14.54:1 vs white · 1.44:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #0D187D 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 text14.54:1AA normal AA large AAA normal
Fails AABlack text1.44:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #0D187D in the contrast checker.

Colors That Go With #0D187D

Pairings derived from color-wheel relationships. The complementary color sits opposite #0D187D; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#0D187D
Complementary
#7D710D
Analogous
#0D507D
Analogous
#3A0D7D
Triadic
#7D0D18
Triadic
#187D0D
Split comp.
#7D3A0D
Split comp.
#507D0D

Tints & Shades of #0D187D

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

#1221AB
#172AD9
#394AEA
#6B79EF
#99A3F4
#C8CDF9

Shades

#0C166F
#0A125C
#080F4E
#070D41
#050A33
#030620

Want a full 50-950 ramp with semantic roles? Generate design tokens from #0D187D.

How #0D187D 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#0D187D
Protanopia#16167D
Protanomaly#13177D
Deuteranopia#15157D
Deuteranomaly#12167D
Tritanopia#003434
Tritanomaly#002B5A
Achromatopsia#292929

Test a full palette in the color blindness simulator.

Using #0D187D in Code

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

CSS custom property--color-0d187d: #0D187D;
CSS backgroundbackground-color: #0D187D;
Tailwind configcolors: { 'color-0d187d': '#0D187D' }
SwiftUIColor(red: 0.051, green: 0.094, blue: 0.490)
Android XML<color name="color_0d187d">#0D187D</color>
SVG fillfill="#0D187D"

More Blue Colors

#0D187D sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#0D187D Frequently Asked Questions

What color is #0D187D?

#0D187D is a dark blue — rgb(13, 24, 125) in RGB and hsl(234, 81%, 27%) in HSL. It carries no registered color name of its own; the closest named color is Resolution Blue (#002387), which is clearly related but distinguishable side by side at a CIE76 distance of 5.48.

What is the RGB value of #0D187D?

#0D187D is rgb(13, 24, 125) — red 13, green 24, and blue 125 on the 0-255 scale.

What is the CMYK value of #0D187D?

#0D187D converts to approximately cmyk(90%, 81%, 0%, 51%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #0D187D be black or white?

White text is the more readable choice. #0D187D scores 14.54:1 against white and 1.44:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #0D187D as a CSS color keyword?

No. #0D187D 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 8.36, which is clearly related but distinguishable side by side.

Open #0D187D 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.