What color is #637C8E?

#637C8E is a grayish azure, closest to the named color Whale Shark. It belongs to the blue family of colors.

What is the RGB value of #637C8E?

The RGB value is 99, 124, 142: 99 red, 124 green and 142 blue on a 0 to 255 scale.

What is the complementary color of #637C8E?

The complementary color is #8E7563, found by rotating the hue 180° on the color wheel.

Is black or white text better on #637C8E?

Black text. Black text has a contrast ratio of 4.8:1 and white text 4.37:1. WCAG asks for at least 4.5:1 for normal text.

#637C8E color

#637C8E rgb(99, 124, 142)

Shades of blue

The hex color #637C8E is a grayish azure.

In the RGB color model it is made of 38.8% red, 48.6% green and 55.7% blue (99, 124, 142).

Its hue angle is 205°, with 18% saturation and 47% lightness. For print, the CMYK equivalent is 30% cyan, 13% magenta, 0% yellow and 44% black.

The closest named color is Whale Shark (#607C8E), a difference of 1 ΔE, which is barely visible.

Black text is the more readable choice on this background (contrast 4.8:1).

#637C8E color codes

HEX	`#637C8E`
RGB	`rgb(99, 124, 142)`
RGB percent	`rgb(38.8%, 48.6%, 55.7%)`
HSL	`hsl(205, 18%, 47%)`
HSV / HSB	`hsv(205, 30%, 56%)`
CMYK	`cmyk(30%, 13%, 0%, 44%)`
CIE LAB	`lab(50.71, -4.55, -12.69)`
CIE LCH	`lch(50.71, 13.48, 250.29)`
CIE XYZ	`xyz(17.234, 19.02, 28.349)`
Decimal	`6519950`
Short hex	`None (no 3-digit form)`

Color harmonies

Colors that go with #637C8E, 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 #637C8E	Ratio	AA	AAA	AA large
Sample text	4.8:1	Pass	Fail	Pass
Sample text	4.37:1	Fail	Fail	Pass

#637C8E as text on	Ratio	AA	AAA	AA large
Sample text	4.37:1	Fail	Fail	Pass
Sample text	4.8:1	Pass	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 #637C8E looks to people with the most common types of color vision deficiency.

CSS examples

.background { background-color: #637c8e; }
.text { color: #637c8e; }
.border { border: 2px solid #637c8e; }
.transparent { background-color: rgb(99 124 142 / 50%); }
.gradient { background: linear-gradient(to right, #637c8e, #63678e); }

Background

Text color

Border

Similar colors

Questions

What color is #637C8E?: #637C8E is a grayish azure, closest to the named color Whale Shark. It belongs to the blue family of colors.
What is the RGB value of #637C8E?: The RGB value is 99, 124, 142: 99 red, 124 green and 142 blue on a 0 to 255 scale.
What is the complementary color of #637C8E?: The complementary color is #8E7563, found by rotating the hue 180° on the color wheel.
Is black or white text better on #637C8E?: Black text. Black text has a contrast ratio of 4.8:1 and white text 4.37:1. WCAG asks for at least 4.5:1 for normal text.