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Recognised as Colour

#1F28CD

  • #1F28CD
  • Blue
  • Dark
  • Nearest: Medium blue

#1F28CD is a blue with RGB values 31, 40, 205 and HSL 237°, 74%, 46%. It is a dark colour, so white text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#1F28CD#1F28CD
HEX#1F28CD
RGBrgb(31, 40, 205)
RGB (0–1)0.1216, 0.1569, 0.8039
RGB percentages12.2%, 15.7%, 80.4%
HSLhsl(236.9, 73.7%, 46.3%)
HSV / HSBhsv(236.9, 84.9%, 80.4%)
CMYK84.9%, 80.5%, 0%, 19.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,042,061
CSS custom property--colour: #1F28CD;

Brightness & contrast

Relative luminance0.06217WCAG 2.x, 0 is black and 1 is white
Perceived brightness77.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.36:1
Contrast with white9.36:1WCAG normal text: AAA
Contrast with black2.24:1WCAG normal text: Fail
Greyscale equivalent#323232
Inverted#E0D732

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004FD2no red cones; affects about 1% of men; ΔE 26.2 from the original
Deuteranopia#003DCAno green cones; the most common form, about 1% of men; ΔE 15.8 from the original
Tritanopia#005D7Cno blue cones; rare, and affects men and women equally; ΔE 89.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.36:1WCAG large text: AAA
Contrast with black, large text2.24:1WCAG large text: Fail

Named colours

Medium blue · ΔE 15.5Blue violet · ΔE 20.9Dark blue · ΔE 21.5Navy · ΔE 26.2Dark violet · ΔE 26.6Dark orchid · ΔE 28.5
Nearest named CSS colourMedium blue (#0000CD)ΔE 15.47, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CDC41F
Analogous#1F7FCD, #6D1FCD
Triadic#CD1F28, #28CD1F
Split complementary#CD6D1F, #7FCD1F
Tetradic#CD1F7F, #CDC41F, #1FCD6D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C2C5F6
Lighter +30%#969BEF
Lighter +20%#6A70E8
Lighter +10%#3D46E2
Darker −10%#181FA1
Darker −20%#121774
Darker −30%#0B0E48
Darker −40%#04051C
More saturated +25%#010EEB
Less saturated −25%#3C42B0

Channel breakdown

R31
G40
B205
Red31 (12.2%)
Green40 (15.7%)
Blue205 (80.4%)
Hue236.9°
Saturation (HSL)73.73%
Lightness46.27%
Dominant channelBlue
Hex per channelR 1F · G 28 · B CD

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Every value on this page was computed from “1f28cd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.