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Recognised as Colour

#1F64AE

  • #1F64AE
  • Blue
  • Dark
  • Nearest: Steel blue

#1F64AE is a blue with RGB values 31, 100, 174 and HSL 211°, 70%, 40%. It is a dark colour, so white text on it reaches 6:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#1F64AE#1F64AE
HEX#1F64AE
RGBrgb(31, 100, 174)
RGB (0–1)0.1216, 0.3922, 0.6824
RGB percentages12.2%, 39.2%, 68.2%
HSLhsl(211, 69.8%, 40.2%)
HSV / HSBhsv(211, 82.2%, 68.2%)
CMYK82.2%, 42.5%, 0%, 31.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,057,390
CSS custom property--colour: #1F64AE;

Brightness & contrast

Relative luminance0.12462WCAG 2.x, 0 is black and 1 is white
Perceived brightness98 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.01:1
Contrast with white6.01:1WCAG normal text: AA
Contrast with black3.49:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#E09B51

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3F6AB1no red cones; affects about 1% of men; ΔE 4.8 from the original
Deuteranopia#255DADno green cones; the most common form, about 1% of men; ΔE 5.8 from the original
Tritanopia#007680no blue cones; rare, and affects men and women equally; ΔE 44 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.01:1WCAG large text: AAA
Contrast with black, large text3.49:1WCAG large text: AA

Named colours

Steel blue · ΔE 19.8Cornflower blue · ΔE 20.6Dark slateblue · ΔE 22.9Dodgerblue · ΔE 25.3Royal blue · ΔE 28.8Slate blue · ΔE 32.4
Nearest named CSS colourSteel blue (#4682B4)ΔE 19.83, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#AE691F
Analogous#1FACAE, #221FAE
Triadic#AE1F64, #64AE1F
Split complementary#AE211F, #ACAE1F
Tetradic#AE1FAC, #AE691F, #1FAE22

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A9CBF0
Lighter +30%#7EB1E8
Lighter +20%#5397E0
Lighter +10%#277DD9
Darker −10%#174B83
Darker −20%#103257
Darker −30%#08192C
Darker −40%#000001
More saturated +25%#0563C8
Less saturated −25%#396594

Channel breakdown

R31
G100
B174
Red31 (12.2%)
Green100 (39.2%)
Blue174 (68.2%)
Hue211.05°
Saturation (HSL)69.76%
Lightness40.2%
Dominant channelBlue
Hex per channelR 1F · G 64 · B AE

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Every value on this page was computed from “1f64ae” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.