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Colour

#1F1941

  • #1F1941
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1F1941 is a blue with RGB values 31, 25, 65 and HSL 249°, 44%, 18%. It is a dark colour, so white text on it reaches 16.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1F1941#1F1941
HEX#1F1941
RGBrgb(31, 25, 65)
RGB (0–1)0.1216, 0.098, 0.2549
RGB percentages12.2%, 9.8%, 25.5%
HSLhsl(249, 44.4%, 17.6%)
HSV / HSBhsv(249, 61.5%, 25.5%)
CMYK52.3%, 61.5%, 0%, 74.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,038,081
CSS custom property--colour: #1F1941;

Brightness & contrast

Relative luminance0.01368WCAG 2.x, 0 is black and 1 is white
Perceived brightness33.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.49:1
Contrast with white16.49:1WCAG normal text: AAA
Contrast with black1.27:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#E0E6BE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#052042no red cones; affects about 1% of men; ΔE 10.4 from the original
Deuteranopia#041E40no green cones; the most common form, about 1% of men; ΔE 9.9 from the original
Tritanopia#14222Ano blue cones; rare, and affects men and women equally; ΔE 25.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.49:1WCAG large text: AAA
Contrast with black, large text1.27:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 28Midnight blue · ΔE 30.2Black · ΔE 31.2Dark slate grey · ΔE 39.3Rebecca purple · ΔE 41.4Dim grey · ΔE 43.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 28.04, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#3B4119
Analogous#192741, #331941
Triadic#411F19, #19411F
Split complementary#413319, #274119
Tetradic#411927, #3B4119, #194133

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7163C3
Lighter +30%#5443AF
Lighter +20%#42358B
Lighter +10%#312766
Darker −10%#0D0B1C
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#170E4C
Less saturated −25%#272436

Channel breakdown

R31
G25
B65
Red31 (12.2%)
Green25 (9.8%)
Blue65 (25.5%)
Hue249°
Saturation (HSL)44.44%
Lightness17.65%
Dominant channelBlue
Hex per channelR 1F · G 19 · B 41

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Every value on this page was computed from “1f1941” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.