What color is #3F5A5A?

#3F5A5A is a dark, grayish cyan, closest to the named color Rosemary. It belongs to the gray family of colors.

What is the RGB value of #3F5A5A?

The RGB value is 63, 90, 90: 63 red, 90 green and 90 blue on a 0 to 255 scale.

What is the complementary color of #3F5A5A?

The complementary color is #5A3F3F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #3F5A5A?

White text. Black text has a contrast ratio of 2.82:1 and white text 7.44:1. WCAG asks for at least 4.5:1 for normal text.

#3F5A5A color

#3F5A5A rgb(63, 90, 90)

Shades of gray

The hex color #3F5A5A is a dark, grayish cyan.

In the RGB color model it is made of 24.7% red, 35.3% green and 35.3% blue (63, 90, 90).

Its hue angle is 180°, with 18% saturation and 30% lightness. For print, the CMYK equivalent is 30% cyan, 0% magenta, 0% yellow and 65% black.

The closest named color is Rosemary (#405E5C), a difference of 1.9 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 7.44:1).

#3F5A5A color codes

HEX	`#3F5A5A`
RGB	`rgb(63, 90, 90)`
RGB percent	`rgb(24.7%, 35.3%, 35.3%)`
HSL	`hsl(180, 18%, 30%)`
HSV / HSB	`hsv(180, 30%, 35%)`
CMYK	`cmyk(30%, 0%, 0%, 65%)`
CIE LAB	`lab(36.19, -10.01, -3.25)`
CIE LCH	`lch(36.19, 10.53, 198)`
CIE XYZ	`xyz(7.551, 9.107, 11.031)`
Decimal	`4151898`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #3F5A5A, 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 #3F5A5A	Ratio	AA	AAA	AA large
Sample text	2.82:1	Fail	Fail	Fail
Sample text	7.44:1	Pass	Pass	Pass

#3F5A5A as text on	Ratio	AA	AAA	AA large
Sample text	7.44:1	Pass	Pass	Pass
Sample text	2.82:1	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 #3F5A5A looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #3f5a5a; }
.text { color: #3f5a5a; }
.border { border: 2px solid #3f5a5a; }
.transparent { background-color: rgb(63 90 90 / 50%); }
.gradient { background: linear-gradient(to right, #3f5a5a, #3f4d5a); }

Background

Text color

Border

Similar colors

Questions

What color is #3F5A5A?: #3F5A5A is a dark, grayish cyan, closest to the named color Rosemary. It belongs to the gray family of colors.
What is the RGB value of #3F5A5A?: The RGB value is 63, 90, 90: 63 red, 90 green and 90 blue on a 0 to 255 scale.
What is the complementary color of #3F5A5A?: The complementary color is #5A3F3F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #3F5A5A?: White text. Black text has a contrast ratio of 2.82:1 and white text 7.44:1. WCAG asks for at least 4.5:1 for normal text.