#389FFF colour

#389FFF is a vivid sky blue close to CSS cornflowerblue. RGB 56, 159, 255, HSL 209, 100%, 61%. Black text passes AAA (7.57:1), white fails (2.77:1).

#389FFF

Nearest CSS name: cornflowerblue #6495ed (not an exact match)
Described as: a vivid sky blue
Red, green, blue: 56, 159, 255
Web safe: No
Luminance: 0.3286 (WCAG relative luminance, 0 is black, 1 is white)

Colour codes

HEX	`#389fff`
RGB	`rgb(56, 159, 255)`
RGB (percent)	`rgb(22% 62.4% 100%)`
HSL	`hsl(208.9, 100%, 61%)`
HSV / HSB	`hsv(208.9, 78%, 100%)`
HWB	`hwb(208.9 22% 0%)`
CMYK (naive)	`cmyk(78%, 38%, 0%, 0%)`
CIELAB (D50)	`lab(63.17% -4.79 -57.08)`
OKLCH	`oklch(68.98% 0.1692 250.57)`
Decimal	`3710975`

CMYK here is the plain formula with no colour profile, so treat it as a starting point; a printer's profile gives the real ink values. CIELAB uses a D50 white point, as CSS lab() does. HSV is not a CSS function, so it is shown for design apps only.

Contrast with white and black text

White text, 2.77:1The quick brown fox jumps over the lazy dog.

Black text, 7.57:1The quick brown fox jumps over the lazy dog.

Text	Ratio	AA normal (4.5)	AA large (3)	AAA normal (7)	AAA large (4.5)
White	2.77:1	Fail	Fail	Fail	Fail
Black	7.57:1	Pass	Pass	Pass	Pass

Black text is the better choice on #389FFF (7.57:1). Ratios use the WCAG 2.2 formula; large text means at least 24px, or 18.66px bold. Check another pair.

Tints and shades

Mixed with white, then with black, in ten even steps (straight sRGB mixing, as most design tools do).

9%#4aa8ff 18%#5cb0ff 27%#6eb9ff 36%#80c2ff 45%#92cbff 55%#a5d3ff 64%#b7dcff 73%#c9e5ff 82%#dbeeff 91%#edf6ff

9%#3391e8 18%#2e82d1 27%#2974b9 36%#2465a2 45%#1f578b 55%#194874 64%#143a5d 73%#0f2b46 82%#0a1d2e 91%#050e17

Colour harmonies

Hue turned around the HSL colour wheel, saturation and lightness kept.

Complementary

The hue opposite on the colour wheel (180°).

#389fff #ff9838

Analogous

Neighbours 30° either side.

#38fffc #389fff #383cff

Triadic

Three hues 120° apart.

#389fff #ff389f #9fff38

Split complementary

The two hues either side of the complement (150° and 210°).

#389fff #ff383c #fffc38

Tetradic (square)

Four hues 90° apart.

#389fff #fc38ff #ff9838 #3cff38

How it looks with colour blindness

Normal vision#389fff Protanopia#71a5ff Deuteranopia#5293fd Tritanopia#00b6c3 Achromatopsia#9b9b9b

Simulated with the Machado, Oliveira and Fernandes (2009) matrices at full severity, applied in linear RGB; achromatopsia shows the colour's luminance as grey. Milder forms (protanomaly, deuteranomaly) are far more common and shift colours less. Never use colour as the only way to carry meaning.

CSS

Text colour	`color: #389fff;`
Background	`background-color: #389fff;`
Border	`border: 1px solid #389fff;`
Half transparent	`background-color: rgb(56 159 255 / 50%);`
Custom property	`--colour-main: #389fff;`
Gradient to a darker shade	`background: linear-gradient(135deg, #389fff, #225f99);`
Gradient from a lighter tint	`background: linear-gradient(180deg, #88c5ff, #389fff);`
Text on this colour	`background-color: #389fff; color: #000;`

Similar named colours

Distance is measured in OKLab, scaled by 100; under about 2 is hard to tell apart side by side.

Convert #389FFF to other formats · Build a palette from it · Check contrast · All named colours

Colour names from CSS Color Module Level 4. Palette values from the Tailwind CSS v3 default palette (MIT licence) and the Material Design 2014 colour palette as published in Material Design Lite (Apache License 2.0). All other values are calculated from the hex code.