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Colour

#000A55

  • #000A55
  • Blue
  • Dark
  • Nearest: Midnight blue

#000A55 is a blue with RGB values 0, 10, 85 and HSL 233°, 100%, 17%. It is a dark colour, so white text on it reaches 17.9:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#000A55#000A55
HEX#000A55
RGBrgb(0, 10, 85)
RGB (0–1)0, 0.0392, 0.3333
RGB percentages0%, 3.9%, 33.3%
HSLhsl(232.9, 100%, 16.7%)
HSV / HSBhsv(232.9, 100%, 33.3%)
CMYK100%, 88.2%, 0%, 66.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,645
CSS custom property--colour: #000A55;

Brightness & contrast

Relative luminance0.00873WCAG 2.x, 0 is black and 1 is white
Perceived brightness29.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 17.88:1
Contrast with white17.88:1WCAG normal text: AAA
Contrast with black1.17:1WCAG normal text: Fail
Greyscale equivalent#0D0D0D
Inverted#FFF5AA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001C57no red cones; affects about 1% of men; ΔE 14.3 from the original
Deuteranopia#001354no green cones; the most common form, about 1% of men; ΔE 7.7 from the original
Tritanopia#002230no blue cones; rare, and affects men and women equally; ΔE 47.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text17.88:1WCAG large text: AAA
Contrast with black, large text1.17:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 9.6Dark slateblue · ΔE 23.3Indigo · ΔE 27.3Navy · ΔE 27.6Rebecca purple · ΔE 28.7Dark blue · ΔE 32.7
Nearest named CSS colourMidnight blue (#191970)ΔE 9.65, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#554B00
Analogous#003455, #210055
Triadic#55000A, #0A5500
Split complementary#552000, #345500
Tetradic#550034, #554B00, #005520

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#223CFF
Lighter +30%#001CEE
Lighter +20%#0016BB
Lighter +10%#001088
Darker −10%#000422
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#000A55
Less saturated −25%#0B124A

Channel breakdown

R0
G10
B85
Red0 (0%)
Green10 (3.9%)
Blue85 (33.3%)
Hue232.94°
Saturation (HSL)100%
Lightness16.67%
Dominant channelBlue
Hex per channelR 00 · G 0A · B 55

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Every value on this page was computed from “000a55” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.