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Recognised as Colour

#040050

  • #040050
  • Blue
  • Dark
  • Nearest: Midnight blue

#040050 is a blue with RGB values 4, 0, 80 and HSL 243°, 100%, 16%. It is a dark colour, so white text on it reaches 18.7:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#040050#040050
HEX#040050
RGBrgb(4, 0, 80)
RGB (0–1)0.0157, 0, 0.3137
RGB percentages1.6%, 0%, 31.4%
HSLhsl(243, 100%, 15.7%)
HSV / HSBhsv(243, 100%, 31.4%)
CMYK95%, 100%, 0%, 68.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer262,224
CSS custom property--colour: #040050;

Brightness & contrast

Relative luminance0.00605WCAG 2.x, 0 is black and 1 is white
Perceived brightness27.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 18.73:1
Contrast with white18.73:1WCAG normal text: AAA
Contrast with black1.12:1WCAG normal text: Fail
Greyscale equivalent#070707
Inverted#FBFFAF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#001652no red cones; affects about 1% of men; ΔE 15.7 from the original
Deuteranopia#000D4Fno green cones; the most common form, about 1% of men; ΔE 9.4 from the original
Tritanopia#001C2Bno blue cones; rare, and affects men and women equally; ΔE 49.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text18.73:1WCAG large text: AAA
Contrast with black, large text1.12:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 11.2Indigo · ΔE 25.4Navy · ΔE 25.4Dark slateblue · ΔE 26.5Rebecca purple · ΔE 29.3Dark blue · ΔE 30.6
Nearest named CSS colourMidnight blue (#191970)ΔE 11.24, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4C5000
Analogous#002450, #2C0050
Triadic#500400, #005004
Split complementary#502C00, #245000
Tetradic#500024, #4C5000, #00502C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#281DFF
Lighter +30%#0C00E9
Lighter +20%#0900B6
Lighter +10%#070083
Darker −10%#01001D
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#040050
Less saturated −25%#0D0A46

Channel breakdown

R4
G0
B80
Red4 (1.6%)
Green0 (0%)
Blue80 (31.4%)
Hue243°
Saturation (HSL)100%
Lightness15.69%
Dominant channelBlue
Hex per channelR 04 · G 00 · B 50

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Every value on this page was computed from “hex 040050” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.