Colour contrast

Published: Last updated:

These grids show how Buckholt colours pair together to meet accessibility standards, highlighting the minimum contrast matches in the palette.

Overview

This page shows how the Buckholt colour palette holds up for accessibility. Each colour is tested to find the minimum match that meets the WCAG contrast ratio of 4.5:1.

The grids have two rows:

  • Top row: each colour is paired with either Buckholt Black or White, whichever gives enough contrast.
  • Bottom row: each colour is paired with the closest colour in the palette that still passes the accessibility check.

If no match can meet the standard, you’ll see it marked as a failed.

Neutral colour

Neutral

16.8:1
Neutral 10 Black
16.2:1
Neutral 20 Black
15:1
Neutral 30 Black
12.4:1
Neutral 40 Black
9:1
Neutral 50 Black
5.5:1
Neutral 60 Black
5:1
Neutral 70 White
7:1
Neutral 80 White
9.6:1
Neutral 90 White
14:1
Neutral 100 White
4.8:1
Neutral 10 Neutral 70
4.6:1
Neutral 20 Neutral 70
6:1
Neutral 30 Neutral 80
5:1
Neutral 40 Neutral 80
4.9:1
Neutral 50 Neutral 90
No accessible match
Neutral 60
4.6:1
Neutral 70 Neutral 20
5:1
Neutral 80 Neutral 40
4.9:1
Neutral 90 Neutral 50
7.2:1
Neutral 100 Neutral 50

Primary colour

Primary

14.7:1
Primary 10 Black
10.2:1
Primary 20 Black
6.8:1
Primary 30 Black
4.7:1
Primary 40 Black
5.2:1
Primary 50 White
7.3:1
Primary 60 White
8.2:1
Primary 70 White
10.6:1
Primary 80 White
13.5:1
Primary 90 White
18.1:1
Primary 100 White
6.2:1
Primary 10 Primary 60
4.8:1
Primary 20 Primary 70
5.3:1
Primary 30 Primary 90
4.9:1
Primary 40 Primary 100
No accessible match
Primary 50
6.2:1
Primary 60 Primary 10
4.8:1
Primary 70 Primary 20
6.2:1
Primary 80 Primary 20
5.3:1
Primary 90 Primary 30
4.9:1
Primary 100 Primary 40

Accent colours

Accent 01

14.8:1
Accent 01 10 Black
10.4:1
Accent 01 20 Black
7:1
Accent 01 30 Black
4.8:1
Accent 01 40 Black
6:1
Accent 01 50 White
7.5:1
Accent 01 60 White
8.6:1
Accent 01 70 White
11.3:1
Accent 01 80 White
14.4:1
Accent 01 90 White
17.6:1
Accent 01 100 White
5:1
Accent 01 10 Accent 01 50
5:1
Accent 01 20 Accent 01 70
4.5:1
Accent 01 30 Accent 01 80
4.9:1
Accent 01 40 Accent 01 100
5:1
Accent 01 50 Accent 01 10
6.3:1
Accent 01 60 Accent 01 10
5:1
Accent 01 70 Accent 01 20
4.5:1
Accent 01 80 Accent 01 30
5.8:1
Accent 01 90 Accent 01 30
4.9:1
Accent 01 100 Accent 01 40

Accent 02

14.8:1
Accent 02 10 Black
10.4:1
Accent 02 20 Black
7.3:1
Accent 02 30 Black
6:1
Accent 02 40 Black
4.7:1
Accent 02 50 Black
5:1
Accent 02 60 White
7:1
Accent 02 70 White
10.2:1
Accent 02 80 White
14.4:1
Accent 02 90 White
18.6:1
Accent 02 100 White
6:1
Accent 02 10 Accent 02 70
6:1
Accent 02 20 Accent 02 80
6:1
Accent 02 30 Accent 02 90
5:1
Accent 02 40 Accent 02 90
5:1
Accent 02 50 Accent 02 100
No accessible match
Accent 02 60
6:1
Accent 02 70 Accent 02 10
6:1
Accent 02 80 Accent 02 20
5:1
Accent 02 90 Accent 02 40
5:1
Accent 02 100 Accent 02 50

Accent 03

15.3:1
Accent 03 10 Black
11.6:1
Accent 03 20 Black
8.7:1
Accent 03 30 Black
6.3:1
Accent 03 40 Black
4.7:1
Accent 03 50 Black
4.5:1
Accent 03 60 White
6.5:1
Accent 03 70 White
9.3:1
Accent 03 80 White
13.5:1
Accent 03 90 White
17.9:1
Accent 03 100 White
5.7:1
Accent 03 10 Accent 03 70
6.2:1
Accent 03 20 Accent 03 80
4.7:1
Accent 03 30 Accent 03 80
4.9:1
Accent 03 40 Accent 03 90
4.8:1
Accent 03 50 Accent 03 100
No accessible match
Accent 03 60
5.7:1
Accent 03 70 Accent 03 10
4.7:1
Accent 03 80 Accent 03 30
4.9:1
Accent 03 90 Accent 03 40
4.8:1
Accent 03 100 Accent 03 50

System colours

Danger

14.7:1
Danger 10 Black
10:1
Danger 20 Black
8.4:1
Danger 30 Black
5.7:1
Danger 40 Black
4.7:1
Danger 50 Black
5.4:1
Danger 60 White
7.4:1
Danger 70 White
10.6:1
Danger 80 White
14.5:1
Danger 90 White
19:1
Danger 100 White
4.5:1
Danger 10 Danger 60
6.2:1
Danger 20 Danger 80
5:1
Danger 30 Danger 80
4.8:1
Danger 40 Danger 90
5:1
Danger 50 Danger 100
4.5:1
Danger 60 Danger 10
6.2:1
Danger 70 Danger 10
5:1
Danger 80 Danger 30
4.8:1
Danger 90 Danger 40
5:1
Danger 100 Danger 50

Caution

15.9:1
Caution 10 Black
12.9:1
Caution 20 Black
10.6:1
Caution 30 Black
8.7:1
Caution 40 Black
8:1
Caution 50 Black
6.7:1
Caution 60 Black
5.5:1
Caution 70 Black
5:1
Caution 80 White
8.2:1
Caution 90 White
13.5:1
Caution 100 White
4.6:1
Caution 10 Caution 80
6:1
Caution 20 Caution 90
5:1
Caution 30 Caution 90
6.7:1
Caution 40 Caution 100
6.2:1
Caution 50 Caution 100
5.2:1
Caution 60 Caution 100
No accessible match
Caution 70
4.6:1
Caution 80 Caution 10
5:1
Caution 90 Caution 30
5.2:1
Caution 100 Caution 60

Valid

15.2:1
Valid 10 Black
11.7:1
Valid 20 Black
8.6:1
Valid 30 Black
6.2:1
Valid 40 Black
5.3:1
Valid 50 Black
4.5:1
Valid 60 White
6.4:1
Valid 70 White
9.4:1
Valid 80 White
13.4:1
Valid 90 White
18:1
Valid 100 White
5.6:1
Valid 10 Valid 70
6.3:1
Valid 20 Valid 80
4.6:1
Valid 30 Valid 80
4.8:1
Valid 40 Valid 90
5.5:1
Valid 50 Valid 100
No accessible match
Valid 60
5.6:1
Valid 70 Valid 10
4.6:1
Valid 80 Valid 30
4.8:1
Valid 90 Valid 40
5.5:1
Valid 100 Valid 50