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Recognised as Colour

#81A7EB

  • #81A7EB
  • Blue
  • Dark
  • Nearest: Cornflower blue

#81A7EB is a blue with RGB values 129, 167, 235 and HSL 218°, 73%, 71%. It is a dark colour, so black text on it reaches 8.7:1 contrast (AAA for normal text). The nearest named colour is Cornflower blue.

Colour values

#81A7EB#81A7EB
HEX#81A7EB
RGBrgb(129, 167, 235)
RGB (0–1)0.5059, 0.6549, 0.9216
RGB percentages50.6%, 65.5%, 92.2%
HSLhsl(218.5, 72.6%, 71.4%)
HSV / HSBhsv(218.5, 45.1%, 92.2%)
CMYK45.1%, 28.9%, 0%, 7.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,497,131
CSS custom property--colour: #81A7EB;

Brightness & contrast

Relative luminance0.38303WCAG 2.x, 0 is black and 1 is white
Perceived brightness166.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 8.66:1
Contrast with white2.42:1WCAG normal text: Fail
Contrast with black8.66:1WCAG normal text: AAA
Greyscale equivalent#A4A4A4
Inverted#7E5814

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#8EACEEno red cones; affects about 1% of men; ΔE 3.2 from the original
Deuteranopia#82A2EAno green cones; the most common form, about 1% of men; ΔE 3.4 from the original
Tritanopia#58B6BFno blue cones; rare, and affects men and women equally; ΔE 39.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text2.42:1WCAG large text: Fail
Contrast with black, large text8.66:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 13.6Steel blue · ΔE 19.1Light skyblue · ΔE 21.7Deep skyblue · ΔE 23.3Light steelblue · ΔE 25.8Dodgerblue · ΔE 27.2
Nearest named CSS colourCornflower blue (#6495ED)ΔE 13.58, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EBC581
Analogous#81DCEB, #9081EB
Triadic#EB81A7, #A7EB81
Split complementary#EB9081, #DCEB81
Tetradic#EB81DC, #EBC581, #81EB90

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#FFFFFF
Lighter +20%#D9E4F9
Lighter +10%#ADC6F2
Darker −10%#5588E4
Darker −20%#296ADD
Darker −30%#1D54B6
Darker −40%#16408A
More saturated +25%#6FA2FD
Less saturated −25%#93ACD9

Channel breakdown

R129
G167
B235
Red129 (50.6%)
Green167 (65.5%)
Blue235 (92.2%)
Hue218.49°
Saturation (HSL)72.6%
Lightness71.37%
Dominant channelBlue
Hex per channelR 81 · G A7 · B EB

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Every value on this page was computed from “81a7eb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.