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Colour

#1F8EFF

  • #1F8EFF
  • Blue
  • Dark
  • Nearest: Dodgerblue

#1F8EFF is a blue with RGB values 31, 142, 255 and HSL 210°, 100%, 56%. It is a dark colour, so black text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Dodgerblue.

Colour values

#1F8EFF#1F8EFF
HEX#1F8EFF
RGBrgb(31, 142, 255)
RGB (0–1)0.1216, 0.5569, 1
RGB percentages12.2%, 55.7%, 100%
HSLhsl(210.3, 100%, 56.1%)
HSV / HSBhsv(210.3, 87.8%, 100%)
CMYK87.8%, 44.3%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,068,223
CSS custom property--colour: #1F8EFF;

Brightness & contrast

Relative luminance0.26857WCAG 2.x, 0 is black and 1 is white
Perceived brightness139.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.37:1
Contrast with white3.3:1WCAG normal text: Fail
Contrast with black6.37:1WCAG normal text: AA
Greyscale equivalent#7F7F7F
Inverted#E07100

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#5198FFno red cones; affects about 1% of men; ΔE 7.7 from the original
Deuteranopia#1985FDno green cones; the most common form, about 1% of men; ΔE 6.1 from the original
Tritanopia#00A9BAno blue cones; rare, and affects men and women equally; ΔE 61.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.3:1WCAG large text: AA
Contrast with black, large text6.37:1WCAG large text: AAA

Named colours

Dodgerblue · ΔE 1.6Cornflower blue · ΔE 15.4Royal blue · ΔE 18.7Slate blue · ΔE 29Medium purple · ΔE 29.5Medium slateblue · ΔE 30.6
Nearest named CSS colourDodgerblue (#1E90FF)ΔE 1.63, below the just-noticeable difference
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF901F
Analogous#1FFEFF, #201FFF
Triadic#FF1F8E, #8EFF1F
Split complementary#FF201F, #FEFF1F
Tetradic#FF1FFE, #FF901F, #1FFF20

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBF5FF
Lighter +30%#B8DBFF
Lighter +20%#85C1FF
Lighter +10%#52A8FF
Darker −10%#0074EB
Darker −20%#005BB8
Darker −30%#004285
Darker −40%#002952
More saturated +25%#1F8EFF
Less saturated −25%#3B8EE3

Channel breakdown

R31
G142
B255
Red31 (12.2%)
Green142 (55.7%)
Blue255 (100%)
Hue210.27°
Saturation (HSL)100%
Lightness56.08%
Dominant channelBlue
Hex per channelR 1F · G 8E · B FF

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Every value on this page was computed from “1f8eff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.