Colour contrast

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

16.1:1

Neutral 10 Black

13.9:1

Neutral 20 Black

9.9:1

Neutral 30 Black

7.2:1

Neutral 40 Black

5.5:1

Neutral 50 Black

4.6:1

Neutral 60 White

6.3:1

Neutral 70 White

9.9:1

Neutral 80 White

12.8:1

Neutral 90 White

15.3:1

Neutral 100 White

5.8:1

Neutral 10 Neutral 70

5:1

Neutral 20 Neutral 70

5.6:1

Neutral 30 Neutral 80

5.3:1

Neutral 40 Neutral 90

4.9:1

Neutral 50 Neutral 100

No accessible match

Neutral 60

5:1

Neutral 70 Neutral 20

5.6:1

Neutral 80 Neutral 30

5.3:1

Neutral 90 Neutral 40

4.9:1

Neutral 100 Neutral 50

Primary colour

Primary

15:1

Primary 10 Black

12.3:1

Primary 20 Black

7.6:1

Primary 30 Black

5.2:1

Primary 40 White

8.5:1

Primary 50 White

11:1

Primary 60 White

12.9:1

Primary 70 White

15:1

Primary 80 White

17:1

Primary 90 White

19.6:1

Primary 100 White

4.5:1

Primary 10 Primary 40

6:1

Primary 20 Primary 50

4.8:1

Primary 30 Primary 60

4.5:1

Primary 40 Primary 10

6:1

Primary 50 Primary 20

4.8:1

Primary 60 Primary 30

5.6:1

Primary 70 Primary 30

6.5:1

Primary 80 Primary 30

7.4:1

Primary 90 Primary 30

8.5:1

Primary 100 Primary 30

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