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Recognised as Colour

#2A9EDD

  • #2A9EDD
  • Blue
  • Dark
  • Nearest: Deep skyblue

#2A9EDD is a blue with RGB values 42, 158, 221 and HSL 201°, 72%, 52%. It is a dark colour, so black text on it reaches 7:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#2A9EDD#2A9EDD
HEX#2A9EDD
RGBrgb(42, 158, 221)
RGB (0–1)0.1647, 0.6196, 0.8667
RGB percentages16.5%, 62%, 86.7%
HSLhsl(201.1, 72.5%, 51.6%)
HSV / HSBhsv(201.1, 81%, 86.7%)
CMYK81%, 28.5%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,793,181
CSS custom property--colour: #2A9EDD;

Brightness & contrast

Relative luminance0.30166WCAG 2.x, 0 is black and 1 is white
Perceived brightness144 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 7.03:1
Contrast with white2.99:1WCAG normal text: Fail
Contrast with black7.03:1WCAG normal text: AAA
Greyscale equivalent#8A8A8A
Inverted#D56122

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#809EE0no red cones; affects about 1% of men; ΔE 17.2 from the original
Deuteranopia#688EDCno green cones; the most common form, about 1% of men; ΔE 19.1 from the original
Tritanopia#00AEB4no blue cones; rare, and affects men and women equally; ΔE 36.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.99:1WCAG large text: Fail
Contrast with black, large text7.03:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 13.4Steel blue · ΔE 13.9Cornflower blue · ΔE 20.9Light skyblue · ΔE 21.8Sky blue · ΔE 26.6Dodgerblue · ΔE 30.1
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 13.43, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DD692A
Analogous#2ADDC3, #2A44DD
Triadic#DD2A9E, #9EDD2A
Split complementary#DD2A44, #DDC32A
Tetradic#C32ADD, #DD692A, #44DD2A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DAEEF9
Lighter +30%#AEDAF2
Lighter +20%#82C6EB
Lighter +10%#56B2E4
Darker −10%#1D81B7
Darker −20%#16628B
Darker −30%#0F435F
Darker −40%#082433
More saturated +25%#0BA7FC
Less saturated −25%#4995BE

Channel breakdown

R42
G158
B221
Red42 (16.5%)
Green158 (62%)
Blue221 (86.7%)
Hue201.12°
Saturation (HSL)72.47%
Lightness51.57%
Dominant channelBlue
Hex per channelR 2A · G 9E · B DD

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Every value on this page was computed from “2a9edd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.