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Recognised as Colour

#04022A

  • #04022A
  • Blue
  • Dark
  • Nearest: Black

#04022A is a blue with RGB values 4, 2, 42 and HSL 243°, 91%, 9%. It is a dark colour, so white text on it reaches 20.1:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#04022A#04022A
HEX#04022A
RGBrgb(4, 2, 42)
RGB (0–1)0.0157, 0.0078, 0.1647
RGB percentages1.6%, 0.8%, 16.5%
HSLhsl(243, 90.9%, 8.6%)
HSV / HSBhsv(243, 95.2%, 16.5%)
CMYK90.5%, 95.2%, 0%, 83.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer262,698
CSS custom property--colour: #04022A;

Brightness & contrast

Relative luminance0.00236WCAG 2.x, 0 is black and 1 is white
Perceived brightness14.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 20.05:1
Contrast with white20.05:1WCAG normal text: AAA
Contrast with black1.05:1WCAG normal text: Fail
Greyscale equivalent#050505
Inverted#FBFDD5

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#000A2Bno red cones; affects about 1% of men; ΔE 4.3 from the original
Deuteranopia#000629no green cones; the most common form, about 1% of men; ΔE 3.5 from the original
Tritanopia#000D15no blue cones; rare, and affects men and women equally; ΔE 21.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text20.05:1WCAG large text: AAA
Contrast with black, large text1.05:1WCAG large text: Fail

Named colours

Black · ΔE 25.8Midnight blue · ΔE 36.3Dark slateblue · ΔE 37.5Dark slate grey · ΔE 41.7Dim grey · ΔE 49.5Rebecca purple · ΔE 50.4
Nearest named CSS colourBlack (#000000)ΔE 25.78, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#282A02
Analogous#02142A, #18022A
Triadic#2A0402, #022A04
Split complementary#2A1802, #142A02
Tetradic#2A0214, #282A02, #022A18

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#170BED
Lighter +30%#1209BC
Lighter +20%#0D078B
Lighter +10%#09045B
Darker −10%#000000
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#02002C
Less saturated −25%#090825

Channel breakdown

R4
G2
B42
Red4 (1.6%)
Green2 (0.8%)
Blue42 (16.5%)
Hue243°
Saturation (HSL)90.91%
Lightness8.63%
Dominant channelBlue
Hex per channelR 04 · G 02 · B 2A

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Every value on this page was computed from “04022a” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.