#1F2147

Accessibility

AAA

15.36:1

Vs white / black

15.36:1 · 1.37:1

Sources

Library color

Codes

Formats

HEX

#1f2147

RGB

rgb(31, 33, 71)

RGBA

rgba(31, 33, 71, 1)

HSL

hsl(237, 39%, 20%)

HSLA

hsla(237, 39%, 20%, 1)

HSV

hsv(237, 56%, 28%)

LAB

lab(14.59% 11.63 -24.18)

LCH

lch(14.59% 26.83 295.69)

OKLAB

oklab(0.2682 0.0101 -0.0688)

OKLCH

oklch(0.2682 0.0695 278.35)

XYZ

xyz(2.25, 1.83, 6.20)

CMYK

cmyk(56%, 54%, 0%, 72%)

CSS

color: #1f2147;

CSS variable

--color-1f2147: #1f2147;

SCSS

$color-1f2147: #1f2147;

JavaScript

const color = "#1f2147";

TypeScript

const color: string = "#1f2147";

React

style={{ backgroundColor: "#1f2147" }}

JSON

{ "hex": "#1f2147", "rgb": { "r": 31, "g": 33, "b": 71 }, "oklch": "oklch(0.2682 0.0695 278.35)" }

Export

Developer code

css

:root {
  --#1f2147-1: #1f2147;
}

Design systems

Nearest official tokens

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

Nearest Tailwind color

indigo-950

Noticeably different · ΔE 3.28 · #1E1B4B

Nearest CSS named color

MidnightBlue

Very different · ΔE 10.12 · #191970

Nearest Material color

indigo-900

Very different · ΔE 11.07 · #1A237E

Nearest Bootstrap color

dark

Very different · ΔE 15.45 · #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.

50eef3ff 100e0e6ff 200ccd1f8 300b4bae6 400979ecd 5007c82b0 600686d94 700525778 8003e415c 9002a2d42 95017192b

Palette

Tints & shades

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

ecedf0 dadae0 c7c8d1 b4b5c2 a2a3b2 8f90a3 7c7e94 6a6b84 575975 444666 323456 1f2147 1c1e41 1a1c3b 171935 15162f 121329 101124 0d0e1e 0a0b18 080812 05050c 030306

Palette

Tints

Mixed toward white — soft backgrounds and highlights

ecedf0 dadae0 c7c8d1 b4b5c2 a2a3b2 8f90a3 7c7e94 6a6b84 575975 444666 323456

Palette

Shades

Mixed toward black — depth, text, and emphasis

1c1e41 1a1c3b 171935 15162f 121329 101124 0d0e1e 0a0b18 080812 05050c 030306

Palette

Tones

Mixed toward neutral grey — muted UI surfaces

27294c 2f3151 373955 3f415a 47495f 505164 585868 60606d 686872 707077 78787b

Harmony

Complementary

Opposite on the color wheel for contrast

#1F2147Stop 1 #47451FStop 2

Harmony

Analogous

Neighbors that sit comfortably together

#1F3547Stop 1 #1F2147Stop 2 #311F47Stop 3

Harmony

Triadic

Evenly spaced triad for vibrant sets

#1F2147Stop 1 #471F21Stop 2 #21471FStop 3

Harmony

Split complementary

Base plus two accents beside the complement

#1F2147Stop 1 #47311FStop 2 #35471FStop 3

Harmony

Monochromatic

Same hue, varied lightness and saturation

#1F2147Stop 1 #363A7CStop 2 #4E53B1Stop 3 #8386C9Stop 4 #B8BAE0Stop 5

Using this color

Where #1f2147 works

#1F2147 (#1f2147) sits in the indigo family at about 237° hue, 39% saturation, and 20% lightness. Contrast is 15.36:1 on white and 1.37:1 on black, so white labels read more clearly on the swatch itself. Nearest Tailwind token: indigo-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, #1f2147 is 1.37:1. Prefer it as a fill, border, or large heading rather than 16px copy.

Family context: Intuition, depth, and sincerity. Common in enterprise software and thoughtful products. Common uses still include buttons, charts, and accents in the Indigo 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 indigo 950#1E1B4B Tailwind blue 950#172554 Web Safe #333366#333366 Spectrum #2E2768#2E2768 Spectrum #25246B#25246B Web Safe #000033#000033 Tailwind slate 900#0F172A Spectrum #212673#212673 Tailwind slate 800#1E293B Spectrum #1D2977#1D2977 Spectrum #383875#383875 Tailwind gray 900#111827