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Recognised as Colour

#042B5E

  • #042B5E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#042B5E is a blue with RGB values 4, 43, 94 and HSL 214°, 92%, 19%. It is a dark colour, so white text on it reaches 13.9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#042B5E#042B5E
HEX#042B5E
RGBrgb(4, 43, 94)
RGB (0–1)0.0157, 0.1686, 0.3686
RGB percentages1.6%, 16.9%, 36.9%
HSLhsl(214, 91.8%, 19.2%)
HSV / HSBhsv(214, 95.7%, 36.9%)
CMYK95.7%, 54.3%, 0%, 63.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer273,246
CSS custom property--colour: #042B5E;

Brightness & contrast

Relative luminance0.02562WCAG 2.x, 0 is black and 1 is white
Perceived brightness45.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.89:1
Contrast with white13.89:1WCAG normal text: AAA
Contrast with black1.51:1WCAG normal text: Fail
Greyscale equivalent#262626
Inverted#FBD4A1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#093160no red cones; affects about 1% of men; ΔE 4.4 from the original
Deuteranopia#00295Dno green cones; the most common form, about 1% of men; ΔE 1.3 from the original
Tritanopia#003840no blue cones; rare, and affects men and women equally; ΔE 33.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.89:1WCAG large text: AAA
Contrast with black, large text1.51:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 22.4Midnight blue · ΔE 27.3Steel blue · ΔE 36.9Rebecca purple · ΔE 38.8Dark slate grey · ΔE 39.2Black · ΔE 39.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 22.38, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#5E3704
Analogous#04585E, #0A045E
Triadic#5E042B, #2B5E04
Split complementary#5E0A04, #585E04
Tetradic#5E0458, #5E3704, #045E0A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#378AF7
Lighter +30%#0A6EF1
Lighter +20%#0858C0
Lighter +10%#06418F
Darker −10%#02152D
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002A62
Less saturated −25%#102D52

Channel breakdown

R4
G43
B94
Red4 (1.6%)
Green43 (16.9%)
Blue94 (36.9%)
Hue214°
Saturation (HSL)91.84%
Lightness19.22%
Dominant channelBlue
Hex per channelR 04 · G 2B · B 5E

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Every value on this page was computed from “042b5e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.