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Colour

#00277A

  • #00277A
  • Blue
  • Dark
  • Nearest: Midnight blue

#00277A is a blue with RGB values 0, 39, 122 and HSL 221°, 100%, 24%. It is a dark colour, so white text on it reaches 13.4:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#00277A#00277A
HEX#00277A
RGBrgb(0, 39, 122)
RGB (0–1)0, 0.1529, 0.4784
RGB percentages0%, 15.3%, 47.8%
HSLhsl(220.8, 100%, 23.9%)
HSV / HSBhsv(220.8, 100%, 47.8%)
CMYK100%, 68%, 0%, 52.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,106
CSS custom property--colour: #00277A;

Brightness & contrast

Relative luminance0.02856WCAG 2.x, 0 is black and 1 is white
Perceived brightness50.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.37:1
Contrast with white13.37:1WCAG normal text: AAA
Contrast with black1.57:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#FFD885

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00357Dno red cones; affects about 1% of men; ΔE 11.1 from the original
Deuteranopia#002A78no green cones; the most common form, about 1% of men; ΔE 3.9 from the original
Tritanopia#003E4Cno blue cones; rare, and affects men and women equally; ΔE 51.8 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text13.37:1WCAG large text: AAA
Contrast with black, large text1.57:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 8.1Dark slateblue · ΔE 14Rebecca purple · ΔE 23Indigo · ΔE 27.4Navy · ΔE 28Slate blue · ΔE 29.4
Nearest named CSS colourMidnight blue (#191970)ΔE 8.11, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7A5300
Analogous#00647A, #16007A
Triadic#7A0027, #277A00
Split complementary#7A1600, #647A00
Tetradic#7A0064, #7A5300, #007A16

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4782FF
Lighter +30%#145FFF
Lighter +20%#0048E0
Lighter +10%#0037AD
Darker −10%#001747
Darker −20%#000614
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00277A
Less saturated −25%#0F2D6B

Channel breakdown

R0
G39
B122
Red0 (0%)
Green39 (15.3%)
Blue122 (47.8%)
Hue220.82°
Saturation (HSL)100%
Lightness23.92%
Dominant channelBlue
Hex per channelR 00 · G 27 · B 7A

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Every value on this page was computed from “00277a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.