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Recognised as Colour

#28A0DF

  • #28A0DF
  • Blue
  • Dark
  • Nearest: Deep skyblue

#28A0DF is a blue with RGB values 40, 160, 223 and HSL 201°, 74%, 52%. It is a dark colour, so black text on it reaches 7.2:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#28A0DF#28A0DF
HEX#28A0DF
RGBrgb(40, 160, 223)
RGB (0–1)0.1569, 0.6275, 0.8745
RGB percentages15.7%, 62.7%, 87.5%
HSLhsl(200.7, 74.1%, 51.6%)
HSV / HSBhsv(200.7, 82.1%, 87.5%)
CMYK82.1%, 28.3%, 0%, 12.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,662,623
CSS custom property--colour: #28A0DF;

Brightness & contrast

Relative luminance0.3092WCAG 2.x, 0 is black and 1 is white
Perceived brightness145.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.18:1
Contrast with white2.92:1WCAG normal text: Fail
Contrast with black7.18:1WCAG normal text: AAA
Greyscale equivalent#8B8B8B
Inverted#D75F20

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#82A0E2no red cones; affects about 1% of men; ΔE 17.7 from the original
Deuteranopia#6990DEno green cones; the most common form, about 1% of men; ΔE 19.3 from the original
Tritanopia#00B0B6no 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 text2.92:1WCAG large text: Fail
Contrast with black, large text7.18:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 12.6Steel blue · ΔE 14.7Light skyblue · ΔE 21.3Cornflower blue · ΔE 21.4Sky blue · ΔE 26.2Dodgerblue · ΔE 30.5
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 12.56, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DF6728
Analogous#28DFC2, #2845DF
Triadic#DF28A0, #A0DF28
Split complementary#DF2845, #DFC228
Tetradic#C228DF, #DF6728, #45DF28

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DAEEF9
Lighter +30%#ADDBF3
Lighter +20%#81C7EC
Lighter +10%#54B4E6
Darker −10%#1B82B9
Darker −20%#15638C
Darker −30%#0E4460
Darker −40%#082433
More saturated +25%#09AAFE
Less saturated −25%#4796C0

Channel breakdown

R40
G160
B223
Red40 (15.7%)
Green160 (62.7%)
Blue223 (87.5%)
Hue200.66°
Saturation (HSL)74.09%
Lightness51.57%
Dominant channelBlue
Hex per channelR 28 · G A0 · B DF

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Every value on this page was computed from “28a0df” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.