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Recognised as Colour

#042E5F

  • #042E5F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#042E5F is a blue with RGB values 4, 46, 95 and HSL 212°, 92%, 19%. It is a dark colour, so white text on it reaches 13.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#042E5F#042E5F
HEX#042E5F
RGBrgb(4, 46, 95)
RGB (0–1)0.0157, 0.1804, 0.3725
RGB percentages1.6%, 18%, 37.3%
HSLhsl(212.3, 91.9%, 19.4%)
HSV / HSBhsv(212.3, 95.8%, 37.3%)
CMYK95.8%, 51.6%, 0%, 62.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer274,015
CSS custom property--colour: #042E5F;

Brightness & contrast

Relative luminance0.02806WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.45:1
Contrast with white13.45:1WCAG normal text: AAA
Contrast with black1.56:1WCAG normal text: Fail
Greyscale equivalent#292929
Inverted#FBD1A0

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#113361no red cones; affects about 1% of men; ΔE 3.3 from the original
Deuteranopia#002B5Eno green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#003A42no blue cones; rare, and affects men and women equally; ΔE 31.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.45:1WCAG large text: AAA
Contrast with black, large text1.56:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 23.6Midnight blue · ΔE 29.4Steel blue · ΔE 35.2Dark slate grey · ΔE 37.1Black · ΔE 38.9Rebecca purple · ΔE 40.3
Nearest named CSS colourDark slateblue (#483D8B)ΔE 23.56, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5F3504
Analogous#045C5F, #07045F
Triadic#5F042E, #2E5F04
Split complementary#5F0704, #5C5F04
Tetradic#5F045C, #5F3504, #045F07

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#3890F7
Lighter +30%#0A75F2
Lighter +20%#085DC1
Lighter +10%#064690
Darker −10%#02162E
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002E63
Less saturated −25%#102F53

Channel breakdown

R4
G46
B95
Red4 (1.6%)
Green46 (18%)
Blue95 (37.3%)
Hue212.31°
Saturation (HSL)91.92%
Lightness19.41%
Dominant channelBlue
Hex per channelR 04 · G 2E · B 5F

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Every value on this page was computed from “042e5f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.