What color is #645951?

#645951 is a dark, grayish orange, closest to the named color Underground. It belongs to the gray family of colors.

What is the RGB value of #645951?

The RGB value is 100, 89, 81: 100 red, 89 green and 81 blue on a 0 to 255 scale.

What is the complementary color of #645951?

The complementary color is #515C64, found by rotating the hue 180° on the color wheel.

Is black or white text better on #645951?

White text. Black text has a contrast ratio of 3.09:1 and white text 6.8:1. WCAG asks for at least 4.5:1 for normal text.

#645951 color

#645951 rgb(100, 89, 81)

Shades of gray

The hex color #645951 is a dark, grayish orange.

In the RGB color model it is made of 39.2% red, 34.9% green and 31.8% blue (100, 89, 81).

Its hue angle is 25°, with 10% saturation and 35% lightness. For print, the CMYK equivalent is 0% cyan, 11% magenta, 19% yellow and 61% black.

The closest named color is Underground (#665A51), a difference of 0.7 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 6.8:1).

#645951 color codes

HEX	`#645951`
RGB	`rgb(100, 89, 81)`
RGB percent	`rgb(39.2%, 34.9%, 31.8%)`
HSL	`hsl(25, 10%, 35%)`
HSV / HSB	`hsv(25, 19%, 39%)`
CMYK	`cmyk(0%, 11%, 19%, 61%)`
CIE LAB	`lab(38.64, 2.98, 6.26)`
CIE LCH	`lch(38.64, 6.93, 64.51)`
CIE XYZ	`xyz(10.313, 10.448, 9.256)`
Decimal	`6576465`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #645951, 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 #645951	Ratio	AA	AAA	AA large
Sample text	3.09:1	Fail	Fail	Pass
Sample text	6.8:1	Pass	Fail	Pass

#645951 as text on	Ratio	AA	AAA	AA large
Sample text	6.8:1	Pass	Fail	Pass
Sample text	3.09:1	Fail	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 #645951 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #645951; }
.text { color: #645951; }
.border { border: 2px solid #645951; }
.transparent { background-color: rgb(100 89 81 / 50%); }
.gradient { background: linear-gradient(to right, #645951, #646251); }

Background

Text color

Border

Similar colors

Closest common color name: Umber.

Questions

What color is #645951?: #645951 is a dark, grayish orange, closest to the named color Underground. It belongs to the gray family of colors.
What is the RGB value of #645951?: The RGB value is 100, 89, 81: 100 red, 89 green and 81 blue on a 0 to 255 scale.
What is the complementary color of #645951?: The complementary color is #515C64, found by rotating the hue 180° on the color wheel.
Is black or white text better on #645951?: White text. Black text has a contrast ratio of 3.09:1 and white text 6.8:1. WCAG asks for at least 4.5:1 for normal text.