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Recognised as Colour

#1773FF

  • #1773FF
  • Blue
  • Dark
  • Nearest: Royal blue

#1773FF is a blue with RGB values 23, 115, 255 and HSL 216°, 100%, 55%. It is a dark colour, so black text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#1773FF#1773FF
HEX#1773FF
RGBrgb(23, 115, 255)
RGB (0–1)0.0902, 0.451, 1
RGB percentages9%, 45.1%, 100%
HSLhsl(216.2, 100%, 54.5%)
HSV / HSBhsv(216.2, 91%, 100%)
CMYK91%, 54.9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,537,023
CSS custom property--colour: #1773FF;

Brightness & contrast

Relative luminance0.19664WCAG 2.x, 0 is black and 1 is white
Perceived brightness123.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.93:1
Contrast with white4.26:1WCAG normal text: Fail
Contrast with black4.93:1WCAG normal text: AA
Greyscale equivalent#6A6A6A
Inverted#E88C00

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0085FFno red cones; affects about 1% of men; ΔE 14.8 from the original
Deuteranopia#0071FCno green cones; the most common form, about 1% of men; ΔE 1.1 from the original
Tritanopia#0096AEno blue cones; rare, and affects men and women equally; ΔE 75.4 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.26:1WCAG large text: AA
Contrast with black, large text4.93:1WCAG large text: AAA

Named colours

Royal blue · ΔE 11.6Medium slateblue · ΔE 17.3Slate blue · ΔE 21.2Dodgerblue · ΔE 23.2Medium purple · ΔE 27.9Cornflower blue · ΔE 34.2
Nearest named CSS colourRoyal blue (#4169E1)ΔE 11.6, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFA317
Analogous#17E7FF, #2F17FF
Triadic#FF1773, #73FF17
Split complementary#FF2F17, #E7FF17
Tetradic#FF17E7, #FFA317, #17FF2F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E3EEFF
Lighter +30%#B0CFFF
Lighter +20%#7DB1FF
Lighter +10%#4A92FF
Darker −10%#005AE3
Darker −20%#0046B0
Darker −30%#00327D
Darker −40%#001D4A
More saturated +25%#1773FF
Less saturated −25%#3479E2

Channel breakdown

R23
G115
B255
Red23 (9%)
Green115 (45.1%)
Blue255 (100%)
Hue216.21°
Saturation (HSL)100%
Lightness54.51%
Dominant channelBlue
Hex per channelR 17 · G 73 · B FF

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Every value on this page was computed from “1773ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.