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Recognised as Colour

#188AFF

  • #188AFF
  • Blue
  • Dark
  • Nearest: Dodgerblue

#188AFF is a blue with RGB values 24, 138, 255 and HSL 210°, 100%, 55%. 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

#188AFF#188AFF
HEX#188AFF
RGBrgb(24, 138, 255)
RGB (0–1)0.0941, 0.5412, 1
RGB percentages9.4%, 54.1%, 100%
HSLhsl(210.4, 100%, 54.7%)
HSV / HSBhsv(210.4, 90.6%, 100%)
CMYK90.6%, 45.9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,608,447
CSS custom property--colour: #188AFF;

Brightness & contrast

Relative luminance0.25591WCAG 2.x, 0 is black and 1 is white
Perceived brightness137 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.12:1
Contrast with white3.43:1WCAG normal text: Fail
Contrast with black6.12:1WCAG normal text: AA
Greyscale equivalent#7A7A7A
Inverted#E77500

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4895FFno 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 from the original
Tritanopia#00A6B8no blue cones; rare, and affects men and women equally; ΔE 63.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.43:1WCAG large text: AA
Contrast with black, large text6.12:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 4.7Royal blue · ΔE 16.3Cornflower blue · ΔE 17.9Slate blue · ΔE 27.2Medium slateblue · ΔE 28.3Medium purple · ΔE 28.6
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 4.69, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF8D18
Analogous#18FDFF, #1A18FF
Triadic#FF188A, #8AFF18
Split complementary#FF1A18, #FDFF18
Tetradic#FF18FD, #FF8D18, #18FF1A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E4F1FF
Lighter +30%#B1D7FF
Lighter +20%#7EBEFF
Lighter +10%#4BA4FF
Darker −10%#0071E4
Darker −20%#0057B1
Darker −30%#003E7E
Darker −40%#00254B
More saturated +25%#188AFF
Less saturated −25%#358AE2

Channel breakdown

R24
G138
B255
Red24 (9.4%)
Green138 (54.1%)
Blue255 (100%)
Hue210.39°
Saturation (HSL)100%
Lightness54.71%
Dominant channelBlue
Hex per channelR 18 · G 8A · B FF

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Every value on this page was computed from “188aff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.