Colour

#01B3DD

#01B3DD
Cyan
Dark
Nearest: Deep skyblue

#01B3DD is a cyan with RGB values 1, 179, 221 and HSL 191°, 99%, 44%. It is a dark colour, so black text on it reaches 8.5:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#01B3DD#01B3DD

HEX#01B3DD

RGBrgb(1, 179, 221)

RGB (0–1)0.0039, 0.702, 0.8667

RGB percentages0.4%, 70.2%, 86.7%

HSLhsl(191.5, 99.1%, 43.5%)

HSV / HSBhsv(191.5, 99.5%, 86.7%)

CMYK99.5%, 19%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer111,581

CSS custom property--colour: #01B3DD;

Brightness & contrast

Relative luminance0.37467WCAG 2.x, 0 is black and 1 is white

Perceived brightness156.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 8.49:1

Contrast with white2.47:1WCAG normal text: Fail

Contrast with black8.49:1WCAG normal text: AAA

Greyscale equivalent#909090

Inverted#FE4C22

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#9BAFDFno red cones; affects about 1% of men; ΔE 28 from the original

Deuteranopia#829DDDno green cones; the most common form, about 1% of men; ΔE 30.3 from the original

Tritanopia#00C0C1no blue cones; rare, and affects men and women equally; ΔE 25.3 from the original

Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning

Contrast with white, large text2.47:1WCAG large text: Fail

Contrast with black, large text8.49:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 13.1 Light skyblue · ΔE 17.6 Sky blue · ΔE 17.7 Steel blue · ΔE 24.4 Cadetblue · ΔE 25.4 Dark turquoise · ΔE 26

Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 13.09, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#DD2B01

Analogous#01DD99, #0145DD

Triadic#DD01B3, #B3DD01

Split complementary#DD0145, #DD9901

Tetradic#9901DD, #DD2B01, #45DD01

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#ABEFFF

Lighter +30%#79E5FE

Lighter +20%#46DBFE

Lighter +10%#13D1FE

Darker −10%#018AAA

Darker −20%#016177

Darker −30%#003845

Darker −40%#000F12

More saturated +25%#00B4DE

Less saturated −25%#1DA2C1

Channel breakdown

G179

B221

Red1 (0.4%)

Green179 (70.2%)

Blue221 (86.7%)

Hue191.45°

Saturation (HSL)99.1%

Lightness43.53%

Dominant channelBlue

Hex per channelR 01 · G B3 · B DD

Keep nerding

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#01B3DD

Colour values

Brightness & contrast

Colour vision & accessibility

Named colours

Colour harmonies

Tints, shades & saturation

Channel breakdown

Keep nerding

Harmonies

Lighter and darker

Similar named colours

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