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Recognised as Colour

#1F28FF

  • #1F28FF
  • Blue
  • Dark
  • Nearest: Blue

#1F28FF is a blue with RGB values 31, 40, 255 and HSL 238°, 100%, 56%. It is a dark colour, so white text on it reaches 7.5:1 contrast (AAA for normal text). The nearest named colour is Blue.

Colour values

#1F28FF#1F28FF
HEX#1F28FF
RGBrgb(31, 40, 255)
RGB (0–1)0.1216, 0.1569, 1
RGB percentages12.2%, 15.7%, 100%
HSLhsl(237.6, 100%, 56.1%)
HSV / HSBhsv(237.6, 87.8%, 100%)
CMYK87.8%, 84.3%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,042,111
CSS custom property--colour: #1F28FF;

Brightness & contrast

Relative luminance0.09029WCAG 2.x, 0 is black and 1 is white
Perceived brightness92.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.48:1
Contrast with white7.48:1WCAG normal text: AAA
Contrast with black2.81:1WCAG normal text: Fail
Greyscale equivalent#363636
Inverted#E0D700

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0060FFno red cones; affects about 1% of men; ΔE 36.9 from the original
Deuteranopia#0048FCno green cones; the most common form, about 1% of men; ΔE 20.3 from the original
Tritanopia#007199no blue cones; rare, and affects men and women equally; ΔE 109.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.48:1WCAG large text: AAA
Contrast with black, large text2.81:1WCAG large text: Fail

Named colours

Blue · ΔE 11.8Medium blue · ΔE 15.2Blue violet · ΔE 27.5Dark violet · ΔE 32.1Dark orchid · ΔE 42.4Dark blue · ΔE 43.8
Nearest named CSS colourBlue (#0000FF)ΔE 11.78, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFF61F
Analogous#1F98FF, #861FFF
Triadic#FF1F28, #28FF1F
Split complementary#FF861F, #98FF1F
Tetradic#FF1F98, #FFF61F, #1FFF86

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#EBECFF
Lighter +30%#B8BBFF
Lighter +20%#858AFF
Lighter +10%#5259FF
Darker −10%#0009EB
Darker −20%#0007B8
Darker −30%#000585
Darker −40%#000352
More saturated +25%#1F28FF
Less saturated −25%#3B42E3

Channel breakdown

R31
G40
B255
Red31 (12.2%)
Green40 (15.7%)
Blue255 (100%)
Hue237.59°
Saturation (HSL)100%
Lightness56.08%
Dominant channelBlue
Hex per channelR 1F · G 28 · B FF

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Every value on this page was computed from “1f28ff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.