What color is #123F4C?

#123F4C is a very dark, moderate cyan, closest to the named color Cold and Dark. It belongs to the teal family of colors.

What is the RGB value of #123F4C?

The RGB value is 18, 63, 76: 18 red, 63 green and 76 blue on a 0 to 255 scale.

What is the complementary color of #123F4C?

The complementary color is #4C1F12, found by rotating the hue 180° on the color wheel.

Is black or white text better on #123F4C?

White text. Black text has a contrast ratio of 1.84:1 and white text 11.41:1. WCAG asks for at least 4.5:1 for normal text.

#123F4C color

#123F4C rgb(18, 63, 76)

Shades of teal

The hex color #123F4C is a very dark, moderate cyan.

In the RGB color model it is made of 7.1% red, 24.7% green and 29.8% blue (18, 63, 76).

Its hue angle is 193°, with 62% saturation and 18% lightness. For print, the CMYK equivalent is 76% cyan, 17% magenta, 0% yellow and 70% black.

The closest named color is Cold and Dark (#154250), a difference of 1.1 ΔE, which is barely visible.

White text is the more readable choice on this background (contrast 11.41:1).

#123F4C color codes

HEX	`#123F4C`
RGB	`rgb(18, 63, 76)`
RGB percent	`rgb(7.1%, 24.7%, 29.8%)`
HSL	`hsl(193, 62%, 18%)`
HSV / HSB	`hsv(193, 76%, 30%)`
CMYK	`cmyk(76%, 17%, 0%, 70%)`
CIE LAB	`lab(24.34, -10.25, -12.33)`
CIE LCH	`lch(24.34, 16.04, 230.28)`
CIE XYZ	`xyz(3.331, 4.205, 7.472)`
Decimal	`1195852`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #123F4C, 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 #123F4C	Ratio	AA	AAA	AA large
Sample text	1.84:1	Fail	Fail	Fail
Sample text	11.41:1	Pass	Pass	Pass

#123F4C as text on	Ratio	AA	AAA	AA large
Sample text	11.41:1	Pass	Pass	Pass
Sample text	1.84:1	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 #123F4C looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #123f4c; }
.text { color: #123f4c; }
.border { border: 2px solid #123f4c; }
.transparent { background-color: rgb(18 63 76 / 50%); }
.gradient { background: linear-gradient(to right, #123f4c, #12224c); }

Background

Text color

Border

Similar colors

Closest common color name: Charcoal.

Questions

What color is #123F4C?: #123F4C is a very dark, moderate cyan, closest to the named color Cold and Dark. It belongs to the teal family of colors.
What is the RGB value of #123F4C?: The RGB value is 18, 63, 76: 18 red, 63 green and 76 blue on a 0 to 255 scale.
What is the complementary color of #123F4C?: The complementary color is #4C1F12, found by rotating the hue 180° on the color wheel.
Is black or white text better on #123F4C?: White text. Black text has a contrast ratio of 1.84:1 and white text 11.41:1. WCAG asks for at least 4.5:1 for normal text.