What is the hex code for Deep Sky Blue?

Deep Sky Blue is #00bfff. In CSS the keyword deepskyblue, the hex #00bfff, rgb(0, 191, 255) and hsl(195, 100%, 50%) all paint the same color.

What is the opposite of Deep Sky Blue on the color wheel?

The opposite (complementary) color is #ff4000, the same saturation and lightness rotated 180° around the HSL wheel. Complementary pairs give the strongest contrast, which is why the complement should be used sparingly rather than at equal weight.

Can I use Deep Sky Blue for text?

Deep Sky Blue as text on white has a contrast ratio of 2.12:1, which fails WCAG AA for body text (4.5:1) and for large text (3:1). On black it is 9.9:1, which passes for body text. Use it as text on dark surfaces, or as a fill with dark text on top.

CSS color names · Blues

Deep Sky Blue color: hex #00bfff, RGB and HSL

Deep Sky Blue is the CSS keyword deepskyblue, hex #00bfff, rgb(0, 191, 255), hsl(195, 100%, 50%). It is a medium, fully saturated blue in the blues family. Below: the colors that go with it, its tints and shades, how it reads as text, and a complete interface palette built from it.

CSS name: deepskyblue
Hex: #00bfff
RGB: rgb(0, 191, 255)
HSL: hsl(195, 100%, 50%)
On white: 2.12:1 — fails AA; use as a fill, not text
On black: 9.9:1 — passes AA for body text

.example {
  color: deepskyblue;          /* keyword */
  color: #00bfff;          /* hex */
  color: rgb(0, 191, 255); /* rgb */
  color: hsl(195, 100%, 50%); /* hsl */
}

What colors go with deep sky blue

Each match keeps deep sky blue's saturation and lightness and rotates only the hue, so the relationship is the wheel's and nothing else. Any of these can be an accent beside deep sky blue as the primary; the harmony guides explain which rule suits which interface.

Complementary

The opposite hue, 180° away — the strongest contrast, best kept to one accent per screen.

#ff4000

Split-complementary

The two neighbors of the complement, at 150° and 210° — most of the contrast with less tension, and two accents instead of one.

#ff0040

#ffbf00

Triadic

Two hues at 120° and 240° — three evenly spaced signals, the scheme charts and category colors want.

#ff00bf

#bfff00

Analogous

The neighbors at −30° and +30° — calm and cohesive, with emphasis coming from weight and size rather than hue.

#00ffbf

#0040ff

Tints and shades of deep sky blue

Tints add lightness toward white; shades remove it toward black. The hue and saturation stay fixed, so every step still reads as deep sky blue — these are the hover, pressed, disabled and surface variants a single brand color needs.

Tints (lighter)

#2bcaff

#55d4ff

#80dfff

#aaeaff

#d4f4ff

Shades (darker)

#009fd4

#007faa

#006080

#004055

#00202b

A UI color palette built from deep sky blue

The eight semantic roles an interface actually uses, derived from deep sky blue as the primary with the split-complementary rule: secondary and accent rotate around the wheel, and the five neutrals take the hue at lightness steps tuned for light and dark mode. This is the same derivation the palette generator runs — open it there to change the rule, drag the anchors, or export the set as CSS variables.

Light mode

primary: #00bfff
secondary: #ff0040
accent: #ffc000
background: #fcfdfd
surface: #f3f6f7
text: #111e22
muted: #56818f
border: #dfe9ec

Dark mode

primary: #1ac5ff
secondary: #ff1a53
accent: #ffc61a
background: #0e171b
surface: #152328
text: #f3f6f6
muted: #94afb8
border: #274049

Open deep sky blue in the palette generator

Using deep sky blue in an interface

Blue is the default interface color for a reason: it sits comfortably behind content, it has a wide usable lightness range for hover and pressed states, and its complement (orange) leaves red and green free for status. Most of the good primaries in this set are here. Whichever role deep sky blue takes, define it once as a token rather than repeating the keyword: the semantic palette guide covers the eight roles, and the guides to complementary, triadic and the other color schemes explain how to weight the matches above.

What is the hex code for Deep Sky Blue?: Deep Sky Blue is #00bfff. In CSS the keyword deepskyblue, the hex #00bfff, rgb(0, 191, 255) and hsl(195, 100%, 50%) all paint the same color.
What colors go with Deep Sky Blue?: Its complement is #ff4000, the split-complementary pair is #ff0040 and #ffbf00, the triadic partners are #ff00bf and #bfff00, and the analogous neighbors are #00ffbf and #0040ff. In an interface, use Deep Sky Blue for most colored elements and one of these for a single accent, at roughly an 80/20 split.
What is the opposite of Deep Sky Blue on the color wheel?: The opposite (complementary) color is #ff4000, the same saturation and lightness rotated 180° around the HSL wheel. Complementary pairs give the strongest contrast, which is why the complement should be used sparingly rather than at equal weight.
Can I use Deep Sky Blue for text?: Deep Sky Blue as text on white has a contrast ratio of 2.12:1, which fails WCAG AA for body text (4.5:1) and for large text (3:1). On black it is 9.9:1, which passes for body text. Use it as text on dark surfaces, or as a fill with dark text on top.