#42434A

Accessibility

AAA

9.84:1

Vs white / black

9.84:1 · 2.13:1

Sources

Library color

Codes

Formats

HEX

#42434a

RGB

rgb(66, 67, 74)

RGBA

rgba(66, 67, 74, 1)

HSL

hsl(233, 6%, 27%)

HSLA

hsla(233, 6%, 27%, 1)

HSV

hsv(233, 11%, 29%)

LAB

lab(28.56% 1.22 -4.36)

LCH

lch(28.56% 4.53 285.63)

OKLAB

oklab(0.3845 0.0019 -0.0117)

OKLCH

oklch(0.3845 0.0119 279.22)

XYZ

xyz(5.49, 5.67, 7.28)

CMYK

cmyk(11%, 9%, 0%, 71%)

CSS

color: #42434a;

CSS variable

--color-42434a: #42434a;

SCSS

$color-42434a: #42434a;

JavaScript

const color = "#42434a";

TypeScript

const color: string = "#42434a";

React

style={{ backgroundColor: "#42434a" }}

JSON

{ "hex": "#42434a", "rgb": { "r": 66, "g": 67, "b": 74 }, "oklch": "oklch(0.3845 0.0119 279.22)" }

Export

Developer code

css

:root {
  --#42434a-1: #42434a;
}

Design systems

Nearest official tokens

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

Nearest Tailwind color

zinc-700

Similar · ΔE 1.4 · #3F3F46

Nearest CSS named color

DimGray

Very different · ΔE 13.96 · #696969

Nearest Material color

grey-800

Noticeably different · ΔE 4.3 · #424242

Nearest Bootstrap color

dark

Very different · ΔE 10.35 · #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.

50f2f4ff 100e5e7f6 200d1d3e2 300bbbdcb 4009ea0ae 500838592 6006d6f7c 700575865 80041434f 9002d2e39 950181a24

Palette

Tints & shades

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

efeff0 e0e0e1 d0d0d2 c0c0c3 b0b1b4 a1a1a5 919195 818286 717277 626268 525359 42434a 3d3d44 37383e 323238 2c2d31 26272b 212225 1b1c1f 161619 111113 0b0b0c 060606

Palette

Tints

Mixed toward white — soft backgrounds and highlights

efeff0 e0e0e1 d0d0d2 c0c0c3 b0b1b4 a1a1a5 919195 818286 717277 626268 525359

Palette

Shades

Mixed toward black — depth, text, and emphasis

3d3d44 37383e 323238 2c2d31 26272b 212225 1b1c1f 161619 111113 0b0b0c 060606

Palette

Tones

Mixed toward neutral grey — muted UI surfaces

47484f 4c4d53 525258 57575c 5c5c61 616265 66676a 6b6c6e 717173 767677 7b7b7c

Harmony

Complementary

Opposite on the color wheel for contrast

#42434AStop 1 #494841Stop 2

Harmony

Analogous

Neighbors that sit comfortably together

#414649Stop 1 #42434AStop 2 #444149Stop 3

Harmony

Triadic

Evenly spaced triad for vibrant sets

#42434AStop 1 #494142Stop 2 #424941Stop 3

Harmony

Split complementary

Base plus two accents beside the complement

#42434AStop 1 #494441Stop 2 #464941Stop 3

Harmony

Monochromatic

Same hue, varied lightness and saturation

#303136Stop 1 #54555FStop 2 #787A87Stop 3 #A0A2ABStop 4 #C9CACFStop 5

Using this color

Where #42434a works

#42434A (#42434a) sits in the grey family at about 233° hue, 6% saturation, and 27% lightness. Contrast is 9.84:1 on white and 2.13:1 on black, so white labels read more clearly on the swatch itself. Nearest Tailwind token: zinc-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, #42434a is 2.13:1. Prefer it as a fill, border, or large heading rather than 16px copy.

Low saturation makes this easy to overuse as a neutral. Keep one chromatic accent elsewhere so the interface does not go muddy.

Family context: Neutrality, balance, and modernity. Essential for UI chrome, typography, and systems. Common uses still include buttons, charts, and accents in the Grey 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 zinc 700#3F3F46 Material Grey 800#424242 Tailwind neutral 700#404040 Tailwind gray 700#374151 Tailwind zinc 600#52525B Tailwind neutral 600#525252 Web Safe #333333#333333 Tailwind stone 700#44403C Tailwind slate 700#334155 Material Blue Grey 800#37474F Tailwind gray 600#4B5563 Dracula Orchid#2D3436