What color is #577B8F?

#577B8F is a grayish azure, closest to the named color Whale Shark. It belongs to the blue family of colors.

What is the RGB value of #577B8F?

The RGB value is 87, 123, 143: 87 red, 123 green and 143 blue on a 0 to 255 scale.

What is the complementary color of #577B8F?

The complementary color is #8F6B57, found by rotating the hue 180° on the color wheel.

Is black or white text better on #577B8F?

Black text. Black text has a contrast ratio of 4.64:1 and white text 4.53:1. WCAG asks for at least 4.5:1 for normal text.

#577B8F color

#577B8F rgb(87, 123, 143)

Shades of blue

The hex color #577B8F is a grayish azure.

In the RGB color model it is made of 34.1% red, 48.2% green and 56.1% blue (87, 123, 143).

Its hue angle is 201°, with 24% saturation and 45% lightness. For print, the CMYK equivalent is 39% cyan, 14% magenta, 0% yellow and 44% black.

The closest named color is Whale Shark (#607C8E), a difference of 2.1 ΔE, a small difference.

Black text is the more readable choice on this background (contrast 4.64:1).

#577B8F color codes

HEX	`#577B8F`
RGB	`rgb(87, 123, 143)`
RGB percent	`rgb(34.1%, 48.2%, 56.1%)`
HSL	`hsl(201, 24%, 45%)`
HSV / HSB	`hsv(201, 39%, 56%)`
CMYK	`cmyk(39%, 14%, 0%, 44%)`
CIE LAB	`lab(49.71, -7.32, -14.87)`
CIE LCH	`lch(49.71, 16.57, 243.8)`
CIE XYZ	`xyz(15.97, 18.174, 28.648)`
Decimal	`5733263`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #577B8F, based on their position on the color wheel.

Complementary

The color opposite on the color wheel (180°). Strongest contrast.

Analogous

Neighbors 30° either side. Calm, natural combinations.

Split complementary

The two colors next to the complement (150° and 210°).

Triadic

Three colors evenly spaced, 120° apart.

Tetradic (square)

Four colors 90° apart.

Shades, tints and tones

Shades (darker, mixed with black)

Tints (lighter, mixed with white)

Tones (mixed with gray)

Contrast and accessibility

Text on #577B8F	Ratio	AA	AAA	AA large
Sample text	4.64:1	Pass	Fail	Pass
Sample text	4.53:1	Pass	Fail	Pass

#577B8F as text on	Ratio	AA	AAA	AA large
Sample text	4.53:1	Pass	Fail	Pass
Sample text	4.64:1	Pass	Fail	Pass

WCAG 2 asks for 4.5:1 for normal text (AA), 7:1 for AAA, and 3:1 for large text. Check other pairs.

Color blindness simulation

How #577B8F looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #577b8f; }
.text { color: #577b8f; }
.border { border: 2px solid #577b8f; }
.transparent { background-color: rgb(87 123 143 / 50%); }
.gradient { background: linear-gradient(to right, #577b8f, #575f8f); }

Background

Text color

Border

Similar colors

Closest common color name: Air Force Blue.

Questions

What color is #577B8F?: #577B8F is a grayish azure, closest to the named color Whale Shark. It belongs to the blue family of colors.
What is the RGB value of #577B8F?: The RGB value is 87, 123, 143: 87 red, 123 green and 143 blue on a 0 to 255 scale.
What is the complementary color of #577B8F?: The complementary color is #8F6B57, found by rotating the hue 180° on the color wheel.
Is black or white text better on #577B8F?: Black text. Black text has a contrast ratio of 4.64:1 and white text 4.53:1. WCAG asks for at least 4.5:1 for normal text.