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Recognised as Colour

#011F61

  • #011F61
  • Blue
  • Dark
  • Nearest: Midnight blue

#011F61 is a blue with RGB values 1, 31, 97 and HSL 221°, 98%, 19%. It is a dark colour, so white text on it reaches 15.3:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#011F61#011F61
HEX#011F61
RGBrgb(1, 31, 97)
RGB (0–1)0.0039, 0.1216, 0.3804
RGB percentages0.4%, 12.2%, 38%
HSLhsl(221.3, 98%, 19.2%)
HSV / HSBhsv(221.3, 99%, 38%)
CMYK99%, 68%, 0%, 62%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer73,569
CSS custom property--colour: #011F61;

Brightness & contrast

Relative luminance0.01849WCAG 2.x, 0 is black and 1 is white
Perceived brightness40.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.33:1
Contrast with white15.33:1WCAG normal text: AAA
Contrast with black1.37:1WCAG normal text: Fail
Greyscale equivalent#1D1D1D
Inverted#FEE09E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002A63no red cones; affects about 1% of men; ΔE 9.3 from the original
Deuteranopia#002160no green cones; the most common form, about 1% of men; ΔE 2.5 from the original
Tritanopia#00313Cno blue cones; rare, and affects men and women equally; ΔE 43 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.33:1WCAG large text: AAA
Contrast with black, large text1.37:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 14.5Dark slateblue · ΔE 17.4Rebecca purple · ΔE 30.1Indigo · ΔE 34.6Navy · ΔE 36.2Slate blue · ΔE 38.3
Nearest named CSS colourMidnight blue (#191970)ΔE 14.51, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#614301
Analogous#014F61, #130161
Triadic#61011F, #1F6101
Split complementary#611301, #4F6101
Tetradic#61014F, #614301, #016113

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#3171FD
Lighter +30%#034FF8
Lighter +20%#023FC6
Lighter +10%#022F93
Darker −10%#000F2F
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001F62
Less saturated −25%#0D2455

Channel breakdown

R1
G31
B97
Red1 (0.4%)
Green31 (12.2%)
Blue97 (38%)
Hue221.25°
Saturation (HSL)97.96%
Lightness19.22%
Dominant channelBlue
Hex per channelR 01 · G 1F · B 61

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Every value on this page was computed from “011f61” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.