What color is #3F5457?

#3F5457 is a dark, grayish cyan, closest to the named color All Nighter. It belongs to the gray family of colors.

What is the RGB value of #3F5457?

The RGB value is 63, 84, 87: 63 red, 84 green and 87 blue on a 0 to 255 scale.

What is the complementary color of #3F5457?

The complementary color is #57423F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #3F5457?

White text. Black text has a contrast ratio of 2.62:1 and white text 8.02:1. WCAG asks for at least 4.5:1 for normal text.

#3F5457 color

#3F5457 rgb(63, 84, 87)

Shades of gray

The hex color #3F5457 is a dark, grayish cyan.

In the RGB color model it is made of 24.7% red, 32.9% green and 34.1% blue (63, 84, 87).

Its hue angle is 188°, with 16% saturation and 29% lightness. For print, the CMYK equivalent is 28% cyan, 3% magenta, 0% yellow and 66% black.

The closest named color is All Nighter (#455454), a difference of 2.4 ΔE, a small difference.

White text is the more readable choice on this background (contrast 8.02:1).

#3F5457 color codes

HEX	`#3F5457`
RGB	`rgb(63, 84, 87)`
RGB percent	`rgb(24.7%, 32.9%, 34.1%)`
HSL	`hsl(188, 16%, 29%)`
HSV / HSB	`hsv(188, 28%, 34%)`
CMYK	`cmyk(28%, 3%, 0%, 66%)`
CIE LAB	`lab(34.16, -7.22, -4.38)`
CIE LCH	`lch(34.16, 8.45, 211.23)`
CIE XYZ	`xyz(6.94, 8.085, 10.21)`
Decimal	`4150359`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #3F5457, 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 #3F5457	Ratio	AA	AAA	AA large
Sample text	2.62:1	Fail	Fail	Fail
Sample text	8.02:1	Pass	Pass	Pass

#3F5457 as text on	Ratio	AA	AAA	AA large
Sample text	8.02:1	Pass	Pass	Pass
Sample text	2.62:1	Fail	Fail	Fail

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 #3F5457 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #3f5457; }
.text { color: #3f5457; }
.border { border: 2px solid #3f5457; }
.transparent { background-color: rgb(63 84 87 / 50%); }
.gradient { background: linear-gradient(to right, #3f5457, #3f4857); }

Background

Text color

Border

Similar colors

Closest common color name: Dark Slate Gray.

Questions

What color is #3F5457?: #3F5457 is a dark, grayish cyan, closest to the named color All Nighter. It belongs to the gray family of colors.
What is the RGB value of #3F5457?: The RGB value is 63, 84, 87: 63 red, 84 green and 87 blue on a 0 to 255 scale.
What is the complementary color of #3F5457?: The complementary color is #57423F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #3F5457?: White text. Black text has a contrast ratio of 2.62:1 and white text 8.02:1. WCAG asks for at least 4.5:1 for normal text.