What color is #647A7F?

#647A7F is a grayish cyan, closest to the named color Catfish. It belongs to the gray family of colors.

What is the RGB value of #647A7F?

The RGB value is 100, 122, 127: 100 red, 122 green and 127 blue on a 0 to 255 scale.

What is the complementary color of #647A7F?

The complementary color is #7F6964, found by rotating the hue 180° on the color wheel.

Is black or white text better on #647A7F?

Black text. Black text has a contrast ratio of 4.63:1 and white text 4.53:1. WCAG asks for at least 4.5:1 for normal text.

#647A7F color

#647A7F rgb(100, 122, 127)

Shades of gray

The hex color #647A7F is a grayish cyan.

In the RGB color model it is made of 39.2% red, 47.8% green and 49.8% blue (100, 122, 127).

Its hue angle is 191°, with 12% saturation and 45% lightness. For print, the CMYK equivalent is 21% cyan, 4% magenta, 0% yellow and 50% black.

The closest named color is Catfish (#657D82), a difference of 1.2 ΔE, which is barely visible.

Black text is the more readable choice on this background (contrast 4.63:1).

#647A7F color codes

HEX	`#647A7F`
RGB	`rgb(100, 122, 127)`
RGB percent	`rgb(39.2%, 47.8%, 49.8%)`
HSL	`hsl(191, 12%, 45%)`
HSV / HSB	`hsv(191, 21%, 50%)`
CMYK	`cmyk(21%, 4%, 0%, 50%)`
CIE LAB	`lab(49.69, -6.81, -5.39)`
CIE LCH	`lch(49.69, 8.69, 218.37)`
CIE XYZ	`xyz(16.045, 18.16, 22.734)`
Decimal	`6584959`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #647A7F, 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 #647A7F	Ratio	AA	AAA	AA large
Sample text	4.63:1	Pass	Fail	Pass
Sample text	4.53:1	Pass	Fail	Pass

#647A7F as text on	Ratio	AA	AAA	AA large
Sample text	4.53:1	Pass	Fail	Pass
Sample text	4.63:1	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 #647A7F looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #647a7f; }
.text { color: #647a7f; }
.border { border: 2px solid #647a7f; }
.transparent { background-color: rgb(100 122 127 / 50%); }
.gradient { background: linear-gradient(to right, #647a7f, #646d7f); }

Background

Text color

Border

Similar colors

Closest common color name: Slate Gray.

Questions

What color is #647A7F?: #647A7F is a grayish cyan, closest to the named color Catfish. It belongs to the gray family of colors.
What is the RGB value of #647A7F?: The RGB value is 100, 122, 127: 100 red, 122 green and 127 blue on a 0 to 255 scale.
What is the complementary color of #647A7F?: The complementary color is #7F6964, found by rotating the hue 180° on the color wheel.
Is black or white text better on #647A7F?: Black text. Black text has a contrast ratio of 4.63:1 and white text 4.53:1. WCAG asks for at least 4.5:1 for normal text.