#2D3D3F

Accessibility

AAA

11.35:1

Vs white / black

11.35:1 · 1.85:1

Sources

Library color

Codes

Formats

HEX

#2d3d3f

RGB

rgb(45, 61, 63)

RGBA

rgba(45, 61, 63, 1)

HSL

hsl(187, 17%, 21%)

HSLA

hsla(187, 17%, 21%, 1)

HSV

hsv(187, 29%, 25%)

LAB

lab(24.49% -5.89 -3.35)

LCH

lch(24.49% 6.78 209.63)

OKLAB

oklab(0.3468 -0.0189 -0.0091)

OKLCH

oklch(0.3468 0.021 205.71)

XYZ

xyz(3.65, 4.25, 5.33)

CMYK

cmyk(29%, 3%, 0%, 75%)

CSS

color: #2d3d3f;

CSS variable

--color-2d3d3f: #2d3d3f;

SCSS

$color-2d3d3f: #2d3d3f;

JavaScript

const color = "#2d3d3f";

TypeScript

const color: string = "#2d3d3f";

React

style={{ backgroundColor: "#2d3d3f" }}

JSON

{ "hex": "#2d3d3f", "rgb": { "r": 45, "g": 61, "b": 63 }, "oklch": "oklch(0.3468 0.021 205.71)" }

Export

Developer code

css

:root {
  --#2d3d3f-1: #2d3d3f;
}

Design systems

Nearest official tokens

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

Nearest Tailwind color

neutral-700

Very different · ΔE 8.02 · #404040

Nearest CSS named color

DarkSlateGray

Very different · ΔE 7.5 · #2F4F4F

Nearest Material color

blue-grey-900

Noticeably different · ΔE 4.86 · #263238

Nearest Bootstrap color

dark

Very different · ΔE 9.37 · #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.

50e7f9fc 100d9ecee 200c6d8db 300b0c2c4 40093a6a8 500788a8c 600637476 7004d5d5f 800374749 900233234 9500f1d1f

Palette

Tints & shades

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

eeefef dcdfdf cbcfcf b9bebf a8aeaf 969e9f 858e8f 737e7f 626e6f 505d5f 3f4d4f 2d3d3f 29383a 263335 222e2f 1e292a 1a2425 171f20 13191a 0f1415 0b0f10 070a0a 040505

Palette

Tints

Mixed toward white — soft backgrounds and highlights

eeefef dcdfdf cbcfcf b9bebf a8aeaf 969e9f 858e8f 737e7f 626e6f 505d5f 3f4d4f

Palette

Shades

Mixed toward black — depth, text, and emphasis

29383a 263335 222e2f 1e292a 1a2425 171f20 13191a 0f1415 0b0f10 070a0a 040505

Palette

Tones

Mixed toward neutral grey — muted UI surfaces

344344 3b484a 424e4f 495355 50595a 575f60 5d6465 646a6a 6b6f70 727575 797a7b

Harmony

Complementary

Opposite on the color wheel for contrast

#2D3D3FStop 1 #3F2F2CStop 2

Harmony

Analogous

Neighbors that sit comfortably together

#2C3F38Stop 1 #2D3D3FStop 2 #2C333FStop 3

Harmony

Triadic

Evenly spaced triad for vibrant sets

#2D3D3FStop 1 #3F2C3DStop 2 #3D3F2CStop 3

Harmony

Split complementary

Base plus two accents beside the complement

#2D3D3FStop 1 #3F2C33Stop 2 #3F382CStop 3

Harmony

Monochromatic

Same hue, varied lightness and saturation

#2A3A3CStop 1 #4A6568Stop 2 #6A9095Stop 3 #97B1B5Stop 4 #C3D3D5Stop 5

Using this color

Where #2d3d3f works

#2D3D3F (#2d3d3f) sits in the cyan family at about 187° hue, 17% saturation, and 21% lightness. Contrast is 11.35:1 on white and 1.85:1 on black, so white labels read more clearly on the swatch itself. Nearest Tailwind token: neutral-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, #2d3d3f is 1.85:1. Prefer it as a fill, border, or large heading rather than 16px copy.

Family context: Freshness, clarity, and innovation. Great for tech accents and clean digital products. Common uses still include buttons, charts, and accents in the Cyan range — always verify the pair for this exact hex in the contrast checker.

Similar & related colors

Nearby colors from the library by perceptual distance

Dracula Orchid#2D3436 Material Blue Grey 900#263238 Material Blue Grey 800#37474F DarkSlateGray#2F4F4F Tailwind neutral 700#404040 Web Safe #333333#333333 Material Grey 800#424242 Tailwind cyan 950#083344 Midnight Blue#2C3E50 Tailwind teal 950#042F2E Web Safe #003333#003333 Bootstrap dark#212529