ColorXprez

#577F98

Slate Gray · medium cool blue

About #577F98

With the hex code #577F98, this is a medium blue with a muted character. Its RGB recipe is 34% red, 50% green and 60% blue, while a printer would mix 43% cyan, 16% magenta, 0% yellow and 40% black. It reads as a cool colour.

If you had to name it, it is similar to Slate Gray — a ΔE of 8.9 — followed by Steel Blue. For maximum hue contrast, pair it with its complement #987057, a mocha mousse shade.

In design, a medium colour like this works best for illustrations, icons and secondary elements. Black text reads best on it at 4.89:1 (a WCAG AA pass).

Colour codes

HEX
RGB
HSL
HSV / HSB
CMYK
CIELAB
Decimal
CSS
Red87
Green127
Blue152

Closest named colours

Slate Gray
#708090 · ΔE 8.9
Steel Blue
#4682B4 · ΔE 14.7
Cerulean
#007BA7 · ΔE 14.9

ΔE measures visible difference: under 2 is barely noticeable, over 10 is clearly different.

Text on #577F98

WCAG contrast for white and black text on this colour.

White heading text
Body copy set on slate gray #577F98.
4.29:1AA Large
Black heading text
Body copy set on slate gray #577F98.
4.89:1AA

Colour-blindness preview

How #577F98 appears to people with the three most common types of colour-vision deficiency.

Normal vision
#577F98
Protanopia (no red cones)
#747E99
Deuteranopia (no green cones)
#6B7798
Tritanopia (no blue cones)
#3D8587

Shades, tints & matching colours

Tints and shades

Complementary

Analogous

Triadic

Split complementary

Tetradic

Similar colours

Frequently asked questions

›What colour is #577F98?

With the hex code #577F98, this is a medium blue with a muted character. Its RGB recipe is 34% red, 50% green and 60% blue, while a printer would mix 43% cyan, 16% magenta, 0% yellow and 40% black. It reads as a cool colour.

›What text colour should I use on #577F98?

Use black text. Black on #577F98 has a contrast ratio of 4.89:1 (AA).

›What colours go with #577F98?

Its complementary colour is #987057, and analogous partners are #579891 and #575E98.