Recognised as Colour

#01B9DA

#01B9DA
Cyan
Dark
Nearest: Sky blue

#01B9DA is a cyan with RGB values 1, 185, 218 and HSL 189°, 99%, 43%. It is a dark colour, so black text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Sky blue.

Colour values

#01B9DA#01B9DA

HEX#01B9DA

RGBrgb(1, 185, 218)

RGB (0–1)0.0039, 0.7255, 0.8549

RGB percentages0.4%, 72.5%, 85.5%

HSLhsl(189.1, 99.1%, 42.9%)

HSV / HSBhsv(189.1, 99.5%, 85.5%)

CMYK99.5%, 15.1%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer113,114

CSS custom property--colour: #01B9DA;

Brightness & contrast

Relative luminance0.39766WCAG 2.x, 0 is black and 1 is white

Perceived brightness159.7 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 8.95:1

Contrast with white2.35:1WCAG normal text: Fail

Contrast with black8.95:1WCAG normal text: AAA

Greyscale equivalent#949494

Inverted#FE4625

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#A3B3DCno red cones; affects about 1% of men; ΔE 31.3 from the original

Deuteranopia#8BA2DAno green cones; the most common form, about 1% of men; ΔE 33 from the original

Tritanopia#00C4C3no blue cones; rare, and affects men and women equally; ΔE 20.8 from the original

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

Contrast with white, large text2.35:1WCAG large text: Fail

Contrast with black, large text8.95:1WCAG large text: AAA

Named colours

Sky blue · ΔE 17 Deep skyblue · ΔE 18.1 Light skyblue · ΔE 19.4 Dark turquoise · ΔE 19.9 Cadetblue · ΔE 22.9 Medium turquoise · ΔE 23

Nearest named CSS colourSky blue (#87CEEB)ΔE 17.02, a distinctly different colour

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#DA2201

Analogous#01DA8E, #014DDA

Triadic#DA01B9, #B9DA01

Split complementary#DA014D, #DA8E01

Tetradic#8E01DA, #DA2201, #4DDA01

Tints, shades & saturation

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

Lighter +40%#A8F1FF

Lighter +30%#76EAFE

Lighter +20%#43E2FE

Lighter +10%#10DAFE

Darker −10%#018EA7

Darker −20%#016374

Darker −30%#003842

Darker −40%#000D0F

More saturated +25%#00BADB

Less saturated −25%#1CA6BF

Channel breakdown

G185

B218

Red1 (0.4%)

Green185 (72.5%)

Blue218 (85.5%)

Hue189.12°

Saturation (HSL)99.09%

Lightness42.94%

Dominant channelBlue

Hex per channelR 01 · G B9 · B DA

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

#01B9DA

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

Nerdulate something else