What color is #3F434B?

#3F434B is a dark, grayish blue, closest to the named color Dark Crypt. It belongs to the gray family of colors.

What is the RGB value of #3F434B?

The RGB value is 63, 67, 75: 63 red, 67 green and 75 blue on a 0 to 255 scale.

What is the complementary color of #3F434B?

The complementary color is #4B473F, found by rotating the hue 180° on the color wheel.

Is black or white text better on #3F434B?

White text. Black text has a contrast ratio of 2.12:1 and white text 9.93:1. WCAG asks for at least 4.5:1 for normal text.

#3F434B color

#3F434B rgb(63, 67, 75)

Shades of gray

The hex color #3F434B is a dark, grayish blue.

In the RGB color model it is made of 24.7% red, 26.3% green and 29.4% blue (63, 67, 75).

Its hue angle is 220°, with 9% saturation and 27% lightness. For print, the CMYK equivalent is 16% cyan, 11% magenta, 0% yellow and 71% black.

The closest named color is Dark Crypt (#3F4551), a difference of 2.1 ΔE, a small difference.

White text is the more readable choice on this background (contrast 9.93:1).

#3F434B color codes

HEX	`#3F434B`
RGB	`rgb(63, 67, 75)`
RGB percent	`rgb(24.7%, 26.3%, 29.4%)`
HSL	`hsl(220, 9%, 27%)`
HSV / HSB	`hsv(220, 16%, 29%)`
CMYK	`cmyk(16%, 11%, 0%, 71%)`
CIE LAB	`lab(28.32, 0.29, -5.39)`
CIE LCH	`lch(28.32, 5.39, 273.07)`
CIE XYZ	`xyz(5.327, 5.579, 7.451)`
Decimal	`4145995`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #3F434B, 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 #3F434B	Ratio	AA	AAA	AA large
Sample text	2.12:1	Fail	Fail	Fail
Sample text	9.93:1	Pass	Pass	Pass

#3F434B as text on	Ratio	AA	AAA	AA large
Sample text	9.93:1	Pass	Pass	Pass
Sample text	2.12:1	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 #3F434B looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #3f434b; }
.text { color: #3f434b; }
.border { border: 2px solid #3f434b; }
.transparent { background-color: rgb(63 67 75 / 50%); }
.gradient { background: linear-gradient(to right, #3f434b, #413f4b); }

Background

Text color

Border

Similar colors

Closest common color name: Charcoal.

Questions

What color is #3F434B?: #3F434B is a dark, grayish blue, closest to the named color Dark Crypt. It belongs to the gray family of colors.
What is the RGB value of #3F434B?: The RGB value is 63, 67, 75: 63 red, 67 green and 75 blue on a 0 to 255 scale.
What is the complementary color of #3F434B?: The complementary color is #4B473F, found by rotating the hue 180° on the color wheel.
Is black or white text better on #3F434B?: White text. Black text has a contrast ratio of 2.12:1 and white text 9.93:1. WCAG asks for at least 4.5:1 for normal text.