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#10187E Color

#10187E is rgb(16, 24, 126) in RGB, hsl(236, 77%, 28%) in HSL, and about cmyk(87%, 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 5.74. White text is the more readable choice on this background.

#10187E
HEX#10187E
RGBrgb(16, 24, 126)
HSLhsl(236, 77%, 28%)
HSVhsv(236, 87%, 49%)
CMYKcmyk(87%, 81%, 0%, 51%)
OKLCHoklch(29.9% 0.165 268.2)
LABlab(15.67% 30.03 -58.68)
LCHlch(15.67% 65.92 297.10)

What #10187E 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 #10187E, ordered by CIE76 distance in CIELAB. Anything under about ΔE 2 is a difference most people cannot see.

Resolution Blue#002387ΔE 5.74Persian Indigo#32127AΔE 8.02Imperial Blue#002395ΔE 8.29Midnight Blue#191970ΔE 8.81Samsung Blue#12279EΔE 11.04Phthalo Blue#000F89ΔE 11.15

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

#10187E Channel Values

How #10187E 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 16 · G 24 · B 1268-bit channels as sent to the display
HSLH 236° · S 77% · L 28%Easiest model for building lighter and darker variants
HSVH 236° · S 87% · V 49%Matches the picker in most design tools
CMYKC 87% · M 81% · Y 0% · K 51%Approximate ink mix; confirm with an ICC profile before printing
Luminance14.44:1 vs white · 1.45:1 vs blackWCAG 2.2 relative-luminance contrast ratios

Text Contrast & Accessibility

WCAG 2.2 contrast ratios for text on a #10187E 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 text14.44:1AA normal AA large AAA normal
Fails AABlack text1.45:1AA normal AA large AAA normal

Need a specific ratio against another background? Open #10187E in the contrast checker.

Colors That Go With #10187E

Pairings derived from color-wheel relationships. The complementary color sits opposite #10187E; analogous colors sit beside it; triadic and split-complementary sets spread evenly around the wheel. Select any swatch for its own breakdown.

Base
#10187E
Complementary
#7E7710
Analogous
#104F7E
Analogous
#40107E
Triadic
#7E1018
Triadic
#187E10
Split comp.
#7E4010
Split comp.
#4F7E10

Tints & Shades of #10187E

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

#1620AC
#1C29D9
#414CE6
#6F77EC
#9CA1F2
#C9CCF8

Shades

#0F1571
#0C125F
#0B0F51
#080C3F
#060932
#040620

Want a full 50-950 ramp with semantic roles? Generate design tokens from #10187E.

How #10187E 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#10187E
Protanopia#17177E
Protanomaly#14177E
Deuteranopia#16167E
Deuteranomaly#14177E
Tritanopia#003434
Tritanomaly#002B5B
Achromatopsia#2A2A2A

Test a full palette in the color blindness simulator.

Using #10187E in Code

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

CSS custom property--color-10187e: #10187E;
CSS backgroundbackground-color: #10187E;
Tailwind configcolors: { 'color-10187e': '#10187E' }
SwiftUIColor(red: 0.063, green: 0.094, blue: 0.494)
Android XML<color name="color_10187e">#10187E</color>
SVG fillfill="#10187E"

More Blue Colors

#10187E sits in the blue family. These are its neighbours across that family's full range, each with its own breakdown.

000024fafaff00002ef9fafb000033f8fafc000038f8f8ff000042f5faff000047f5f5ff002147007dfa0f52ba1c39bb2a3439372aac4e3cc364609a7abdff979aaab8dbffd6d6ff

#10187E Frequently Asked Questions

What color is #10187E?

#10187E is a dark blue — rgb(16, 24, 126) in RGB and hsl(236, 77%, 28%) 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 5.74.

What is the RGB value of #10187E?

#10187E is rgb(16, 24, 126) — red 16, green 24, and blue 126 on the 0-255 scale.

What is the CMYK value of #10187E?

#10187E converts to approximately cmyk(87%, 81%, 0%, 51%). CMYK output is a mathematical approximation for planning; confirm production print colors with your printer and ICC profile.

Should text on #10187E be black or white?

White text is the more readable choice. #10187E scores 14.44:1 against white and 1.45:1 against black, and WCAG 2.2 asks for at least 4.5:1 for normal body text.

Can I write #10187E as a CSS color keyword?

No. #10187E 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 8.81, which is clearly related but distinguishable side by side.

Open #10187E 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.