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Colour

#1779FF

  • #1779FF
  • Blue
  • Dark
  • Nearest: Royal blue

#1779FF is a blue with RGB values 23, 121, 255 and HSL 215°, 100%, 55%. It is a dark colour, so black text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#1779FF#1779FF
HEX#1779FF
RGBrgb(23, 121, 255)
RGB (0–1)0.0902, 0.4745, 1
RGB percentages9%, 47.5%, 100%
HSLhsl(214.7, 100%, 54.5%)
HSV / HSBhsv(214.7, 91%, 100%)
CMYK91%, 52.5%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,538,559
CSS custom property--colour: #1779FF;

Brightness & contrast

Relative luminance0.21077WCAG 2.x, 0 is black and 1 is white
Perceived brightness127.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.22:1
Contrast with white4.03:1WCAG normal text: Fail
Contrast with black5.22:1WCAG normal text: AA
Greyscale equivalent#6E6E6E
Inverted#E88600

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0089FFno red cones; affects about 1% of men; ΔE 13.2 from the original
Deuteranopia#0075FCno green cones; the most common form, about 1% of men; ΔE 1.8 from the original
Tritanopia#009AB0no blue cones; rare, and affects men and women equally; ΔE 72.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.03:1WCAG large text: AA
Contrast with black, large text5.22:1WCAG large text: AAA

Named colours

Royal blue · ΔE 10.2Dodgerblue · ΔE 18.4Medium slateblue · ΔE 19.1Slate blue · ΔE 21.5Medium purple · ΔE 27Cornflower blue · ΔE 29.7
Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.16, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF9D17
Analogous#17EDFF, #2917FF
Triadic#FF1779, #79FF17
Split complementary#FF2917, #EDFF17
Tetradic#FF17ED, #FF9D17, #17FF29

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E3EFFF
Lighter +30%#B0D1FF
Lighter +20%#7DB4FF
Lighter +10%#4A96FF
Darker −10%#0060E3
Darker −20%#004AB0
Darker −30%#00357D
Darker −40%#001F4A
More saturated +25%#1779FF
Less saturated −25%#347EE2

Channel breakdown

R23
G121
B255
Red23 (9%)
Green121 (47.5%)
Blue255 (100%)
Hue214.66°
Saturation (HSL)100%
Lightness54.51%
Dominant channelBlue
Hex per channelR 17 · G 79 · B FF

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Every value on this page was computed from “1779ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.