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Colour

#081C51

  • #081C51
  • Blue
  • Dark
  • Nearest: Midnight blue

#081C51 is a blue with RGB values 8, 28, 81 and HSL 224°, 82%, 17%. It is a dark colour, so white text on it reaches 16.2:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#081C51#081C51
HEX#081C51
RGBrgb(8, 28, 81)
RGB (0–1)0.0314, 0.1098, 0.3176
RGB percentages3.1%, 11%, 31.8%
HSLhsl(223.6, 82%, 17.5%)
HSV / HSBhsv(223.6, 90.1%, 31.8%)
CMYK90.1%, 65.4%, 0%, 68.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer531,537
CSS custom property--colour: #081C51;

Brightness & contrast

Relative luminance0.01476WCAG 2.x, 0 is black and 1 is white
Perceived brightness35 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.21:1
Contrast with white16.21:1WCAG normal text: AAA
Contrast with black1.3:1WCAG normal text: Fail
Greyscale equivalent#1C1C1C
Inverted#F7E3AE

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002453no red cones; affects about 1% of men; ΔE 7.1 from the original
Deuteranopia#001D50no green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#002A33no blue cones; rare, and affects men and women equally; ΔE 35.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.21:1WCAG large text: AAA
Contrast with black, large text1.3:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 22.4Dark slateblue · ΔE 22.5Rebecca purple · ΔE 36.5Black · ΔE 39.8Indigo · ΔE 41.6Navy · ΔE 44
Nearest named CSS colourMidnight blue (#191970)ΔE 22.43, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#513D08
Analogous#084051, #180851
Triadic#51081C, #1C5108
Split complementary#511908, #405108
Tetradic#510841, #513D08, #085119

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#3A6AEB
Lighter +30%#164CDC
Lighter +20%#113CAE
Lighter +10%#0D2C7F
Darker −10%#030C23
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001859
Less saturated −25%#132146

Channel breakdown

R8
G28
B81
Red8 (3.1%)
Green28 (11%)
Blue81 (31.8%)
Hue223.56°
Saturation (HSL)82.02%
Lightness17.45%
Dominant channelBlue
Hex per channelR 08 · G 1C · B 51

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Every value on this page was computed from “081c51” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.