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Colour

#138AFF

  • #138AFF
  • Blue
  • Dark
  • Nearest: Dodgerblue

#138AFF is a blue with RGB values 19, 138, 255 and HSL 210°, 100%, 54%. It is a dark colour, so black text on it reaches 6.1:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#138AFF#138AFF
HEX#138AFF
RGBrgb(19, 138, 255)
RGB (0–1)0.0745, 0.5412, 1
RGB percentages7.5%, 54.1%, 100%
HSLhsl(209.7, 100%, 53.7%)
HSV / HSBhsv(209.7, 92.5%, 100%)
CMYK92.5%, 45.9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,280,767
CSS custom property--colour: #138AFF;

Brightness & contrast

Relative luminance0.25535WCAG 2.x, 0 is black and 1 is white
Perceived brightness136.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.11:1
Contrast with white3.44:1WCAG normal text: Fail
Contrast with black6.11:1WCAG normal text: AA
Greyscale equivalent#797979
Inverted#EC7500

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4795FFno red cones; affects about 1% of men; ΔE 8.2 from the original
Deuteranopia#0081FDno green cones; the most common form, about 1% of men; ΔE 6.1 from the original
Tritanopia#00A6B8no blue cones; rare, and affects men and women equally; ΔE 63.2 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.44:1WCAG large text: AA
Contrast with black, large text6.11:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 4.6Royal blue · ΔE 16.4Cornflower blue · ΔE 17.9Slate blue · ΔE 27.4Medium slateblue · ΔE 28.5Medium purple · ΔE 28.8
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 4.63, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF8813
Analogous#13FFFE, #1314FF
Triadic#FF138A, #8AFF13
Split complementary#FF1314, #FFFE13
Tetradic#FE13FF, #FF8813, #14FF13

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DFEFFF
Lighter +30%#ACD6FF
Lighter +20%#79BDFF
Lighter +10%#46A3FF
Darker −10%#0070DF
Darker −20%#0057AC
Darker −30%#003D79
Darker −40%#002346
More saturated +25%#138AFF
Less saturated −25%#318AE2

Channel breakdown

R19
G138
B255
Red19 (7.5%)
Green138 (54.1%)
Blue255 (100%)
Hue209.75°
Saturation (HSL)100%
Lightness53.73%
Dominant channelBlue
Hex per channelR 13 · G 8A · B FF

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Every value on this page was computed from “138aff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.