Colour

#21BEFF

#21BEFF
Cyan
Dark
Nearest: Deep skyblue

#21BEFF is a cyan with RGB values 33, 190, 255 and HSL 198°, 100%, 56%. It is a dark colour, so black text on it reaches 9.9:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#21BEFF#21BEFF

HEX#21BEFF

RGBrgb(33, 190, 255)

RGB (0–1)0.1294, 0.7451, 1

RGB percentages12.9%, 74.5%, 100%

HSLhsl(197.6, 100%, 56.5%)

HSV / HSBhsv(197.6, 87.1%, 100%)

CMYK87.1%, 25.5%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer2,211,583

CSS custom property--colour: #21BEFF;

Brightness & contrast

Relative luminance0.4437WCAG 2.x, 0 is black and 1 is white

Perceived brightness170.1 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 9.87:1

Contrast with white2.13:1WCAG normal text: Fail

Contrast with black9.87:1WCAG normal text: AAA

Greyscale equivalent#A1A1A1

Inverted#DE4100

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#9DBCFFno red cones; affects about 1% of men; ΔE 22.9 from the original

Deuteranopia#81A9FEno green cones; the most common form, about 1% of men; ΔE 25.6 from the original

Tritanopia#00CFD4no blue cones; rare, and affects men and women equally; ΔE 36.8 from the original

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

Contrast with white, large text2.13:1WCAG large text: Fail

Contrast with black, large text9.87:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 1.7 Light skyblue · ΔE 16.7 Sky blue · ΔE 22.4 Steel blue · ΔE 25.5 Cornflower blue · ΔE 28.2 Light steelblue · ΔE 31.7

Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 1.67, below the just-noticeable difference

Hue familycyan

CSS keyword usableNo exact keyword

Colour harmonies

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

Complementary#FF6221

Analogous#21FFD1, #214FFF

Triadic#FF21BE, #BEFF21

Split complementary#FF214F, #FFD121

Tetradic#D121FF, #FF6221, #4FFF21

Tints, shades & saturation

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

Lighter +40%#EDFAFF

Lighter +30%#BAEBFF

Lighter +20%#87DCFF

Lighter +10%#54CDFF

Darker −10%#00A8ED

Darker −20%#0084BA

Darker −30%#005F87

Darker −40%#003B54

More saturated +25%#21BEFF

Less saturated −25%#3DB3E3

Channel breakdown

R33

G190

B255

Red33 (12.9%)

Green190 (74.5%)

Blue255 (100%)

Hue197.57°

Saturation (HSL)100%

Lightness56.47%

Dominant channelBlue

Hex per channelR 21 · G BE · B FF

Keep nerding

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

#21BEFF

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