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Recognised as Colour

#019DDD

  • #019DDD
  • Cyan
  • Dark
  • Nearest: Deep skyblue

#019DDD is a cyan with RGB values 1, 157, 221 and HSL 197°, 99%, 44%. It is a dark colour, so black text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Deep skyblue.

Colour values

#019DDD#019DDD
HEX#019DDD
RGBrgb(1, 157, 221)
RGB (0–1)0.0039, 0.6157, 0.8667
RGB percentages0.4%, 61.6%, 86.7%
HSLhsl(197.5, 99.1%, 43.5%)
HSV / HSBhsv(197.5, 99.5%, 86.7%)
CMYK99.5%, 29%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer105,949
CSS custom property--colour: #019DDD;

Brightness & contrast

Relative luminance0.29341WCAG 2.x, 0 is black and 1 is white
Perceived brightness141.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.87:1
Contrast with white3.06:1WCAG normal text: Fail
Contrast with black6.87:1WCAG normal text: AA
Greyscale equivalent#808080
Inverted#FE6222

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7D9DE0no red cones; affects about 1% of men; ΔE 18.7 from the original
Deuteranopia#638CDCno green cones; the most common form, about 1% of men; ΔE 20.8 from the original
Tritanopia#00ADB3no blue cones; rare, and affects men and women equally; ΔE 36.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.06:1WCAG large text: AA
Contrast with black, large text6.87:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 13.1Steel blue · ΔE 14.9Cornflower blue · ΔE 22Light skyblue · ΔE 23Sky blue · ΔE 27.7Dodgerblue · ΔE 30.3
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#DD4101
Analogous#01DDAF, #012FDD
Triadic#DD019D, #9DDD01
Split complementary#DD012F, #DDAF01
Tetradic#AF01DD, #DD4101, #2FDD01

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#ABE6FF
Lighter +30%#79D7FE
Lighter +20%#46C9FE
Lighter +10%#13BAFE
Darker −10%#0179AA
Darker −20%#015577
Darker −30%#003145
Darker −40%#000D12
More saturated +25%#009DDE
Less saturated −25%#1D91C1

Channel breakdown

R1
G157
B221
Red1 (0.4%)
Green157 (61.6%)
Blue221 (86.7%)
Hue197.45°
Saturation (HSL)99.1%
Lightness43.53%
Dominant channelBlue
Hex per channelR 01 · G 9D · B DD

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Every value on this page was computed from “019ddd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.