# #1b4e80 color: Classic Blue

#1b4e80 is rgb(27, 78, 128) in RGB and oklch(41.671% 0.09941 251.167) in OKLCH. Every other format, shade and contrast value is below.

Source: https://pickshade.com/color/1b4e80

## Formats

| Format | Value |
| --- | --- |
| HEX | #1b4e80 |
| RGB | rgb(27, 78, 128) |
| HSL | hsl(209.7, 65.16%, 30.39%) |
| HSB / HSV | hsv(209.7 78.91% 50.2%) |
| HWB | hwb(209.7 10.59% 49.8%) |
| CMYK | cmyk(79% 39% 0% 50%) |
| Lab | lab(31.84 -2.71 -33.69) |
| LCH | lch(31.84 33.8 265.41) |
| OKLab | oklab(41.671% -0.03209 -0.09409) |
| OKLCH | oklch(41.671% 0.09941 251.167) |
| Display P3 | color(display-p3 0.16226 0.30157 0.48705) |
| Rec. 2020 | color(rec2020 0.16273 0.2398 0.43377) |
| Adobe RGB | color(a98-rgb 0.2016 0.31016 0.49194) |
| ProPhoto RGB | color(prophoto-rgb 0.21201 0.23487 0.40436) |
| Linear sRGB | color(srgb-linear 0.01096 0.07619 0.21586) |
| XYZ D65 | color(xyz-d65 0.07072 0.0724 0.21448) |
| XYZ D50 | color(xyz-d50 0.06501 0.07014 0.16169) |
| SwiftUI | Color(red: 0.106, green: 0.306, blue: 0.502) |
| UIKit | UIColor(red: 0.106, green: 0.306, blue: 0.502, alpha: 1) |
| Flutter / Compose | Color(0xFF1B4E80) |
| Android XML | #1B4E80 |

## Facts

- Closest name: Classic Blue
- Hue family: Blue, deep dark blue
- Closest Tailwind class: sky-900
- Gamut: Inside sRGB: displays the same on any screen.
- Contrast with white: 8.58:1
- Contrast with black: 2.45:1

## Tints

#1b4e80, #335f8d, #49709a, #5f81a6, #7492b3, #8ba4c0, #a1b6cc, #b8c8d9, #cfdae6, #e7ecf2

## Shades

#1b4e80, #16436e, #11385d, #0c2d4d, #08233d, #05192e, #020f1f, #010712, #000206, #000001

## Tones

#1b4e80, #224e7b, #284e76, #2e4e71, #334e6c, #384e67, #3c4e61, #404e5c, #444d57, #484d52

## Harmonies

- Complementary: #1b4e80, #6d4100
- Split: #1b4e80, #78361c, #584d00
- Analogous: #1b4e80, #005771, #444480
- Triadic: #1b4e80, #78323e, #385714
- Tetradic: #1b4e80, #5e3a73, #6d4100, #385714
- Square: #1b4e80, #6f345c, #6d4100, #005c3a
- Monochromatic: #1b4e80, #000d37, #002d5c, #3f71a5, #6295cc

## Questions about #1b4e80

### What color is #1b4e80?

#1b4e80 is deep dark blue. The closest named color is Classic Blue. In RGB it is rgb(27, 78, 128), in HSL hsl(209.7, 65.16%, 30.39%) and in OKLCH oklch(41.671% 0.09941 251.167).

### What colors go well with #1b4e80?

The complementary color of #1b4e80 is #6d4100. For a calmer combination use the analogous colors #005771 and #444480. The triadic partners are #78323e and #385714.

### Is white or black text more readable on #1b4e80?

White text reads better on #1b4e80: white gives a contrast ratio of 8.58:1 and black gives 2.45:1. WCAG AA asks for at least 4.5:1 for body text.

### Is #1b4e80 a warm or cool color?

#1b4e80 is a cool color. In OKLCH its hue is 251 degrees, its lightness 41.7% and its chroma 0.099.