What color is #645E40?

#645E40 is a dark, grayish yellow, closest to the named color Olive Bark. It belongs to the yellow family of colors.

What is the RGB value of #645E40?

The RGB value is 100, 94, 64: 100 red, 94 green and 64 blue on a 0 to 255 scale.

What is the complementary color of #645E40?

The complementary color is #404664, found by rotating the hue 180° on the color wheel.

Is black or white text better on #645E40?

White text. Black text has a contrast ratio of 3.22:1 and white text 6.53:1. WCAG asks for at least 4.5:1 for normal text.

#645E40 color

#645E40 rgb(100, 94, 64)

Shades of yellow

The hex color #645E40 is a dark, grayish yellow.

In the RGB color model it is made of 39.2% red, 36.9% green and 25.1% blue (100, 94, 64).

Its hue angle is 50°, with 22% saturation and 32% lightness. For print, the CMYK equivalent is 0% cyan, 6% magenta, 36% yellow and 61% black.

The closest named color is Olive Bark (#5F5537), a difference of 3.6 ΔE, a small difference.

White text is the more readable choice on this background (contrast 6.53:1).

#645E40 color codes

HEX	`#645E40`
RGB	`rgb(100, 94, 64)`
RGB percent	`rgb(39.2%, 36.9%, 25.1%)`
HSL	`hsl(50, 22%, 32%)`
HSV / HSB	`hsv(50, 36%, 39%)`
CMYK	`cmyk(0%, 6%, 36%, 61%)`
CIE LAB	`lab(39.72, -2.71, 18.1)`
CIE LCH	`lch(39.72, 18.3, 98.51)`
CIE XYZ	`xyz(10.184, 11.085, 6.453)`
Decimal	`6577728`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #645E40, 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 #645E40	Ratio	AA	AAA	AA large
Sample text	3.22:1	Fail	Fail	Pass
Sample text	6.53:1	Pass	Fail	Pass

#645E40 as text on	Ratio	AA	AAA	AA large
Sample text	6.53:1	Pass	Fail	Pass
Sample text	3.22:1	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 #645E40 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #645e40; }
.text { color: #645e40; }
.border { border: 2px solid #645e40; }
.transparent { background-color: rgb(100 94 64 / 50%); }
.gradient { background: linear-gradient(to right, #645e40, #586440); }

Background

Text color

Border

Similar colors

Closest common color name: Ebony.

Questions

What color is #645E40?: #645E40 is a dark, grayish yellow, closest to the named color Olive Bark. It belongs to the yellow family of colors.
What is the RGB value of #645E40?: The RGB value is 100, 94, 64: 100 red, 94 green and 64 blue on a 0 to 255 scale.
What is the complementary color of #645E40?: The complementary color is #404664, found by rotating the hue 180° on the color wheel.
Is black or white text better on #645E40?: White text. Black text has a contrast ratio of 3.22:1 and white text 6.53:1. WCAG asks for at least 4.5:1 for normal text.