What color is #123F40?

#123F40 is a very dark, moderate cyan, closest to the named color Botanical Night. It belongs to the teal family of colors.

What is the RGB value of #123F40?

The RGB value is 18, 63, 64: 18 red, 63 green and 64 blue on a 0 to 255 scale.

What is the complementary color of #123F40?

The complementary color is #401312, found by rotating the hue 180° on the color wheel.

Is black or white text better on #123F40?

White text. Black text has a contrast ratio of 1.81:1 and white text 11.6:1. WCAG asks for at least 4.5:1 for normal text.

#123F40 color

#123F40 rgb(18, 63, 64)

Shades of teal

The hex color #123F40 is a very dark, moderate cyan.

In the RGB color model it is made of 7.1% red, 24.7% green and 25.1% blue (18, 63, 64).

Its hue angle is 181°, with 56% saturation and 16% lightness. For print, the CMYK equivalent is 72% cyan, 2% magenta, 0% yellow and 75% black.

The closest named color is Botanical Night (#12403C), a difference of 2.8 ΔE, a small difference.

White text is the more readable choice on this background (contrast 11.6:1).

#123F40 color codes

HEX	`#123F40`
RGB	`rgb(18, 63, 64)`
RGB percent	`rgb(7.1%, 24.7%, 25.1%)`
HSL	`hsl(181, 56%, 16%)`
HSV / HSB	`hsv(181, 72%, 25%)`
CMYK	`cmyk(72%, 2%, 0%, 75%)`
CIE LAB	`lab(23.85, -14.59, -5.12)`
CIE LCH	`lch(23.85, 15.46, 199.35)`
CIE XYZ	`xyz(2.952, 4.053, 5.476)`
Decimal	`1195840`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #123F40, 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 #123F40	Ratio	AA	AAA	AA large
Sample text	1.81:1	Fail	Fail	Fail
Sample text	11.6:1	Pass	Pass	Pass

#123F40 as text on	Ratio	AA	AAA	AA large
Sample text	11.6:1	Pass	Pass	Pass
Sample text	1.81:1	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 #123F40 looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #123f40; }
.text { color: #123f40; }
.border { border: 2px solid #123f40; }
.transparent { background-color: rgb(18 63 64 / 50%); }
.gradient { background: linear-gradient(to right, #123f40, #122840); }

Background

Text color

Border

Similar colors

Questions

What color is #123F40?: #123F40 is a very dark, moderate cyan, closest to the named color Botanical Night. It belongs to the teal family of colors.
What is the RGB value of #123F40?: The RGB value is 18, 63, 64: 18 red, 63 green and 64 blue on a 0 to 255 scale.
What is the complementary color of #123F40?: The complementary color is #401312, found by rotating the hue 180° on the color wheel.
Is black or white text better on #123F40?: White text. Black text has a contrast ratio of 1.81:1 and white text 11.6:1. WCAG asks for at least 4.5:1 for normal text.