# #643a18 color: Cassiterite Brown

#643a18 is rgb(100, 58, 24) in RGB and oklch(39.282% 0.07597 56.827) in OKLCH. Every other format, shade and contrast value is below.

Source: https://pickshade.com/color/643a18

## Formats

| Format | Value |
| --- | --- |
| HEX | #643a18 |
| RGB | rgb(100, 58, 24) |
| HSL | hsl(26.84, 61.29%, 24.31%) |
| HSB / HSV | hsv(26.84 76% 39.22%) |
| HWB | hwb(26.84 9.41% 60.78%) |
| CMYK | cmyk(0% 42% 76% 61%) |
| Lab | lab(29.22 16.77 28.6) |
| LCH | lch(29.22 33.16 59.62) |
| OKLab | oklab(39.282% 0.04157 0.06359) |
| OKLCH | oklch(39.282% 0.07597 56.827) |
| Display P3 | color(display-p3 0.36925 0.23516 0.12079) |
| Rec. 2020 | color(rec2020 0.28055 0.18055 0.06297) |
| Adobe RGB | color(a98-rgb 0.35603 0.23738 0.12596) |
| ProPhoto RGB | color(prophoto-rgb 0.25039 0.1888 0.09711) |
| Linear sRGB | color(srgb-linear 0.12744 0.04231 0.00913) |
| XYZ D65 | color(xyz-d65 0.06933 0.05802 0.01619) |
| XYZ D50 | color(xyz-d50 0.07317 0.05924 0.0124) |
| SwiftUI | Color(red: 0.392, green: 0.227, blue: 0.094) |
| UIKit | UIColor(red: 0.392, green: 0.227, blue: 0.094, alpha: 1) |
| Flutter / Compose | Color(0xFF643A18) |
| Android XML | #643A18 |

## Facts

- Closest name: Cassiterite Brown
- Hue family: Brown, soft dark brown
- Closest Tailwind class: yellow-900
- Gamut: Inside sRGB: displays the same on any screen.
- Contrast with white: 9.72:1
- Contrast with black: 2.16:1

## Tints

#643a18, #734c2f, #825e44, #92715a, #a18470, #b09887, #c0ac9e, #cfc0b6, #dfd5ce, #efeae6

## Shades

#643a18, #563113, #48280f, #3b200a, #2e1807, #221004, #160902, #0b0401, #030100, #000000

## Tones

#643a18, #613c1e, #5e3d24, #5c3e29, #59402d, #564132, #534236, #50433a, #4c443e, #494542

## Harmonies

- Complementary: #643a18, #124b69
- Split: #643a18, #00515a, #33446f
- Analogous: #643a18, #69342f, #574208
- Triadic: #643a18, #005345, #4a3c69
- Tetradic: #643a18, #434b15, #124b69, #4a3c69
- Square: #643a18, #27512d, #124b69, #5b365b
- Monochromatic: #643a18, #1d0300, #421b00, #885b3a, #ae7e5c

## Questions about #643a18

### What color is #643a18?

#643a18 is soft dark brown. The closest named color is Cassiterite Brown. In RGB it is rgb(100, 58, 24), in HSL hsl(26.84, 61.29%, 24.31%) and in OKLCH oklch(39.282% 0.07597 56.827).

### What colors go well with #643a18?

The complementary color of #643a18 is #124b69. For a calmer combination use the analogous colors #69342f and #574208. The triadic partners are #005345 and #4a3c69.

### Is white or black text more readable on #643a18?

White text reads better on #643a18: white gives a contrast ratio of 9.72:1 and black gives 2.16:1. WCAG AA asks for at least 4.5:1 for body text.

### Is #643a18 a warm or cool color?

#643a18 is a warm color. In OKLCH its hue is 57 degrees, its lightness 39.3% and its chroma 0.076.