#1B1D25

Accessibility

AAA

16.81:1

Vs white / black

16.81:1 · 1.25:1

Sources

Library color

Codes

Formats

HEX

#1b1d25

RGB

rgb(27, 29, 37)

RGBA

rgba(27, 29, 37, 1)

HSL

hsl(228, 16%, 13%)

HSLA

hsla(228, 16%, 13%, 1)

HSV

hsv(228, 27%, 15%)

LAB

lab(10.89% 1.34 -5.75)

LCH

lch(10.89% 5.9 283.12)

OKLAB

oklab(0.2323 0.0011 -0.0157)

OKLCH

oklch(0.2323 0.0157 274.01)

XYZ

xyz(1.23, 1.25, 1.93)

CMYK

cmyk(27%, 22%, 0%, 85%)

CSS

color: #1b1d25;

CSS variable

--color-1b1d25: #1b1d25;

SCSS

$color-1b1d25: #1b1d25;

JavaScript

const color = "#1b1d25";

TypeScript

const color: string = "#1b1d25";

React

style={{ backgroundColor: "#1b1d25" }}

JSON

{ "hex": "#1b1d25", "rgb": { "r": 27, "g": 29, "b": 37 }, "oklch": "oklch(0.2323 0.0157 274.01)" }

Export

Developer code

css

:root {
  --#1b1d25-1: #1b1d25;
}

Design systems

Nearest official tokens

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

Nearest Tailwind color

zinc-900

Noticeably different · ΔE 3.53 · #18181B

Nearest CSS named color

Black

Very different · ΔE 8.45 · #000000

Nearest Material color

grey-900

Very different · ΔE 5.49 · #212121

Nearest Bootstrap color

dark

Noticeably different · ΔE 4.22 · #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.

50f1f5ff 100e3e7f6 200d0d4e2 300b9bdcb 4009da1ae 500828693 6006c707c 700565965 80040434f 9002c2e39 950181a24

Palette

Tints & shades

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

ececed d9d9db c6c7c9 b3b4b6 a0a1a4 8d8e92 7a7b80 67686e 54565c 414349 2e3037 1b1d25 191b22 17181f 14161c 121319 101116 0e0f13 0b0c0f 090a0c 070709 040506 020203

Palette

Tints

Mixed toward white — soft backgrounds and highlights

ececed d9d9db c6c7c9 b3b4b6 a0a1a4 8d8e92 7a7b80 67686e 54565c 414349 2e3037

Palette

Shades

Mixed toward black — depth, text, and emphasis

191b22 17181f 14161c 121319 101116 0e0f13 0b0c0f 090a0c 070709 040506 020203

Palette

Tones

Mixed toward neutral grey — muted UI surfaces

23252d 2c2e34 34363c 3d3e43 45464b 4e4f53 56575a 5e5f62 676769 6f7071 787878

Harmony

Complementary

Opposite on the color wheel for contrast

#1B1D25Stop 1 #26241CStop 2

Harmony

Analogous

Neighbors that sit comfortably together

#1C2326Stop 1 #1B1D25Stop 2 #1F1C26Stop 3

Harmony

Triadic

Evenly spaced triad for vibrant sets

#1B1D25Stop 1 #261C1EStop 2 #1E261CStop 3

Harmony

Split complementary

Base plus two accents beside the complement

#1B1D25Stop 1 #261F1CStop 2 #23261CStop 3

Harmony

Monochromatic

Same hue, varied lightness and saturation

#2B2E3BStop 1 #4B5168Stop 2 #6B7394Stop 3 #979DB4Stop 4 #C4C7D4Stop 5

Using this color

Where #1b1d25 works

#1B1D25 (#1b1d25) sits in the blue family at about 228° hue, 16% saturation, and 13% lightness. Contrast is 16.81:1 on white and 1.25:1 on black, so white labels read more clearly on the swatch itself. Nearest Tailwind token: zinc-900 (approximation unless the hex is an official scale stop).

Sensible jobs for this swatch

body text, chrome, and dark-mode surfaces
text or icons on a white canvas

On a black or near-black UI, #1b1d25 is 1.25:1. 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

Material You On Surface#1C1B1F Tailwind zinc 900#18181B Bootstrap dark#212529 Tailwind gray 900#111827 Tailwind zinc 800#27272A Tailwind gray 800#1F2937 Material Grey 900#212121 Tailwind gray 950#030712 Tailwind neutral 900#171717 Tailwind slate 950#020617 Tailwind neutral 800#262626 Tailwind slate 900#0F172A