#2B3A50

Accessibility

AAA

11.51:1

Vs white / black

11.51:1 · 1.82:1

Sources

Library color

Codes

Formats

HEX

#2b3a50

RGB

rgb(43, 58, 80)

RGBA

rgba(43, 58, 80, 1)

HSL

hsl(216, 30%, 24%)

HSLA

hsla(216, 30%, 24%, 1)

HSV

hsv(216, 46%, 31%)

LAB

lab(24.06% 0.62 -15.3)

LCH

lch(24.06% 15.31 272.32)

OKLAB

oklab(0.3454 -0.0092 -0.0426)

OKLCH

oklch(0.3454 0.0436 257.81)

XYZ

xyz(3.96, 4.12, 8.17)

CMYK

cmyk(46%, 28%, 0%, 69%)

CSS

color: #2b3a50;

CSS variable

--color-2b3a50: #2b3a50;

SCSS

$color-2b3a50: #2b3a50;

JavaScript

const color = "#2b3a50";

TypeScript

const color: string = "#2b3a50";

React

style={{ backgroundColor: "#2b3a50" }}

JSON

{ "hex": "#2b3a50", "rgb": { "r": 43, "g": 58, "b": 80 }, "oklch": "oklch(0.3454 0.0436 257.81)" }

Export

Developer code

css

:root {
  --#2b3a50-1: #2b3a50;
}

Design systems

Nearest official tokens

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

Nearest Tailwind color

slate-700

Noticeably different · ΔE 2.48 · #334155

Nearest CSS named color

DarkSlateBlue

Very different · ΔE 11.84 · #483D8B

Nearest Material color

blue-grey-900

Very different · ΔE 8.88 · #263238

Nearest Bootstrap color

dark

Very different · ΔE 10.88 · #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.

50eaf6ff 100dce9fc 200c7d5eb 300afbfd7 40091a3bd 5007687a1 600627187 7004e5a6d 8003a4453 90027303b 950141b25

Palette

Tints & shades

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

edeff0 dcdee2 caced3 b8bdc5 a7adb6 959da8 838c99 727c8a 606b7c 4e5b6d 3d4a5f 2b3a50 273549 243043 202c3c 1d2735 19222f 161d28 121821 0e131b 0b0f14 070a0d 040507

Palette

Tints

Mixed toward white — soft backgrounds and highlights

edeff0 dcdee2 caced3 b8bdc5 a7adb6 959da8 838c99 727c8a 606b7c 4e5b6d 3d4a5f

Palette

Shades

Mixed toward black — depth, text, and emphasis

273549 243043 202c3c 1d2735 19222f 161d28 121821 0e131b 0b0f14 070a0d 040507

Palette

Tones

Mixed toward neutral grey — muted UI surfaces

324054 394658 404c5c 475160 4e5764 565d68 5d636c 646970 6b6f74 727478 797a7c

Harmony

Complementary

Opposite on the color wheel for contrast

#2B3A50Stop 1 #50412BStop 2

Harmony

Analogous

Neighbors that sit comfortably together

#2B4C50Stop 1 #2B3A50Stop 2 #2F2B50Stop 3

Harmony

Triadic

Evenly spaced triad for vibrant sets

#2B3A50Stop 1 #502B3AStop 2 #3A502BStop 3

Harmony

Split complementary

Base plus two accents beside the complement

#2B3A50Stop 1 #502F2BStop 2 #4C502BStop 3

Harmony

Monochromatic

Same hue, varied lightness and saturation

#243042Stop 1 #3E5474Stop 2 #5978A6Stop 3 #8BA0C1Stop 4 #BDC9DBStop 5

Using this color

Where #2b3a50 works

#2B3A50 (#2b3a50) sits in the blue family at about 216° hue, 30% saturation, and 24% lightness. Contrast is 11.51:1 on white and 1.82:1 on black, so white labels read more clearly on the swatch itself. Nearest Tailwind token: slate-700 (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, #2b3a50 is 1.82:1. 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

Tailwind slate 700#334155 Midnight Blue#2C3E50 Tailwind gray 700#374151 Wet Asphalt#34495E Tailwind slate 800#1E293B Tailwind sky 950#082F49 Tailwind gray 800#1F2937 Spectrum #324771#324771 Web Safe #003366#003366 Spectrum #1A4675#1A4675 Tailwind zinc 700#3F3F46 Material Blue Grey 900#263238