#173159

Accessibility

AAA

12.96:1

Vs white / black

12.96:1 · 1.62:1

Sources

Library color

Codes

Formats

HEX

#173159

RGB

rgb(23, 49, 89)

RGBA

rgba(23, 49, 89, 1)

HSL

hsl(216, 59%, 22%)

HSLA

hsla(216, 59%, 22%, 1)

HSV

hsv(216, 74%, 35%)

LAB

lab(20.44% 5.29 -27.04)

LCH

lch(20.44% 27.55 281.07)

OKLAB

oklab(0.3157 -0.0153 -0.0772)

OKLCH

oklch(0.3157 0.0787 258.79)

XYZ

xyz(3.25, 3.10, 9.88)

CMYK

cmyk(74%, 45%, 0%, 65%)

CSS

color: #173159;

CSS variable

--color-173159: #173159;

SCSS

$color-173159: #173159;

JavaScript

const color = "#173159";

TypeScript

const color: string = "#173159";

React

style={{ backgroundColor: "#173159" }}

JSON

{ "hex": "#173159", "rgb": { "r": 23, "g": 49, "b": 89 }, "oklch": "oklch(0.3157 0.0787 258.79)" }

Export

Developer code

css

:root {
  --#173159-1: #173159;
}

Design systems

Nearest official tokens

An arbitrary HEX is not an official Tailwind, Material, or Bootstrap color. Distance is CIEDE2000.

Nearest Tailwind color

blue-950

Noticeably different · ΔE 4.79 · #172554

Nearest CSS named color

MidnightBlue

Very different · ΔE 10.69 · #191970

Nearest Material color

indigo-900

Very different · ΔE 9.43 · #1A237E

Nearest Bootstrap color

dark

Very different · ΔE 14.98 · #212529

OKLCH

Perceptual 50–950 scale

Generated in OKLCH from this hex. Not an official Tailwind scale unless the hex itself is a Tailwind token.

50e2f7ff 100d3eaff 200bcd6fd 300a3bfeb 40084a3d3 5006987b6 600577199 700445a7c 800324460 900212f45 9500f1b2d

Palette

Tints & shades

Full scale from light tints through the base color into deep shades

eceef1 d8dde3 c5ccd6 b2bac8 9ea9ba 8b98ac 78879e 647690 516583 3e5375 2a4267 173159 152d52 13294a 112543 0f213b 0d1d34 0c192d 0a1425 08101e 060c16 04080f 020407

Palette

Tints

Mixed toward white — soft backgrounds and highlights

eceef1 d8dde3 c5ccd6 b2bac8 9ea9ba 8b98ac 78879e 647690 516583 3e5375 2a4267

Palette

Shades

Mixed toward black — depth, text, and emphasis

152d52 13294a 112543 0f213b 0d1d34 0c192d 0a1425 08101e 060c16 04080f 020407

Palette

Tones

Mixed toward neutral grey — muted UI surfaces

20385c 293e60 314563 3a4b66 435269 4c596d 545f70 5d6673 666c76 6f737a 77797d

Harmony

Complementary

Opposite on the color wheel for contrast

#173159Stop 1 #593F17Stop 2

Harmony

Analogous

Neighbors that sit comfortably together

#175359Stop 1 #173159Stop 2 #1E1759Stop 3

Harmony

Triadic

Evenly spaced triad for vibrant sets

#173159Stop 1 #591731Stop 2 #315917Stop 3

Harmony

Split complementary

Base plus two accents beside the complement

#173159Stop 1 #591E17Stop 2 #535917Stop 3

Harmony

Monochromatic

Same hue, varied lightness and saturation

#152D51Stop 1 #254F8EStop 2 #3470CBStop 3 #719BDAStop 4 #AEC6EAStop 5

Using this color

Where #173159 works

#173159 (#173159) sits in the blue family at about 216° hue, 59% saturation, and 22% lightness. Contrast is 12.96:1 on white and 1.62:1 on black, so white labels read more clearly on the swatch itself. Nearest Tailwind token: blue-950 (approximation unless the hex is an official scale stop).

Sensible jobs for this swatch

supporting UI accents
text or icons on a white canvas

On a black or near-black UI, #173159 is 1.62:1. Prefer it as a fill, border, or large heading rather than 16px copy.

Family context: Trust, calm, and professionalism. The most used color in SaaS, finance, and healthcare. Common uses still include buttons, charts, and accents in the Blue range — always verify the pair for this exact hex in the contrast checker.

Similar & related colors

Nearby colors from the library by perceptual distance

Web Safe #003366#003366 Tailwind blue 950#172554 Tailwind sky 950#082F49 Spectrum #192E7B#192E7B Spectrum #163783#163783 Web Safe #333366#333366 Spectrum #343A79#343A79 Spectrum #2F3B7F#2F3B7F Spectrum #123D87#123D87 Spectrum #324771#324771 Spectrum #1D2977#1D2977 Spectrum #2A3F83#2A3F83