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Recognised as Colour

#050551

  • #050551
  • Blue
  • Dark
  • Nearest: Midnight blue

#050551 is a blue with RGB values 5, 5, 81 and HSL 240°, 88%, 17%. It is a dark colour, so white text on it reaches 18.3:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#050551#050551
HEX#050551
RGBrgb(5, 5, 81)
RGB (0–1)0.0196, 0.0196, 0.3176
RGB percentages2%, 2%, 31.8%
HSLhsl(240, 88.4%, 16.9%)
HSV / HSBhsv(240, 93.8%, 31.8%)
CMYK93.8%, 93.8%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer329,041
CSS custom property--colour: #050551;

Brightness & contrast

Relative luminance0.00735WCAG 2.x, 0 is black and 1 is white
Perceived brightness27.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.31:1
Contrast with white18.31:1WCAG normal text: AAA
Contrast with black1.15:1WCAG normal text: Fail
Greyscale equivalent#0A0A0A
Inverted#FAFAAE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001953no red cones; affects about 1% of men; ΔE 15.2 from the original
Deuteranopia#001050no green cones; the most common form, about 1% of men; ΔE 8.6 from the original
Tritanopia#001F2Dno blue cones; rare, and affects men and women equally; ΔE 47.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.31:1WCAG large text: AAA
Contrast with black, large text1.15:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 10.7Dark slateblue · ΔE 24.7Indigo · ΔE 26.8Navy · ΔE 27.3Rebecca purple · ΔE 29.1Dark blue · ΔE 32.5
Nearest named CSS colourMidnight blue (#191970)ΔE 10.74, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#515105
Analogous#052B51, #2B0551
Triadic#510505, #055105
Split complementary#512B05, #2B5105
Tetradic#51052B, #515105, #05512B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#3030F2
Lighter +30%#0E0EE1
Lighter +20%#0B0BB1
Lighter +10%#080881
Darker −10%#020221
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000056
Less saturated −25%#101046

Channel breakdown

R5
G5
B81
Red5 (2%)
Green5 (2%)
Blue81 (31.8%)
Hue240°
Saturation (HSL)88.37%
Lightness16.86%
Dominant channelBlue
Hex per channelR 05 · G 05 · B 51

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Every value on this page was computed from “hex 050551” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.