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Recognised as Colour

#042A91

  • #042A91
  • Blue
  • Dark
  • Nearest: Midnight blue

#042A91 is a blue with RGB values 4, 42, 145 and HSL 224°, 95%, 29%. It is a dark colour, so white text on it reaches 12:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#042A91#042A91
HEX#042A91
RGBrgb(4, 42, 145)
RGB (0–1)0.0157, 0.1647, 0.5686
RGB percentages1.6%, 16.5%, 56.9%
HSLhsl(223.8, 94.6%, 29.2%)
HSV / HSBhsv(223.8, 97.2%, 56.9%)
CMYK97.2%, 71%, 0%, 43.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer273,041
CSS custom property--colour: #042A91;

Brightness & contrast

Relative luminance0.03726WCAG 2.x, 0 is black and 1 is white
Perceived brightness58.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.03:1
Contrast with white12.03:1WCAG normal text: AAA
Contrast with black1.75:1WCAG normal text: Fail
Greyscale equivalent#292929
Inverted#FBD56E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003D94no red cones; affects about 1% of men; ΔE 14.9 from the original
Deuteranopia#00308Fno green cones; the most common form, about 1% of men; ΔE 6.2 from the original
Tritanopia#00475Ano blue cones; rare, and affects men and women equally; ΔE 61.1 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.03:1WCAG large text: AAA
Contrast with black, large text1.75:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 11.8Rebecca purple · ΔE 19.1Navy · ΔE 19.2Dark slateblue · ΔE 19.8Indigo · ΔE 20.7Dark blue · ΔE 22.3
Nearest named CSS colourMidnight blue (#191970)ΔE 11.79, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#916B04
Analogous#047191, #250491
Triadic#91042A, #2A9104
Split complementary#912504, #709104
Tetradic#910470, #916B04, #049124

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#668EFB
Lighter +30%#356AF9
Lighter +20%#0747F4
Lighter +10%#0538C3
Darker −10%#031C5F
Darker −20%#010D2E
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002895
Less saturated −25%#17337E

Channel breakdown

R4
G42
B145
Red4 (1.6%)
Green42 (16.5%)
Blue145 (56.9%)
Hue223.83°
Saturation (HSL)94.63%
Lightness29.22%
Dominant channelBlue
Hex per channelR 04 · G 2A · B 91

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Every value on this page was computed from “042a91” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.