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Recognised as Colour

#042B49

  • #042B49
  • Blue
  • Dark
  • Nearest: Dark slate grey

#042B49 is a blue with RGB values 4, 43, 73 and HSL 206°, 90%, 15%. It is a dark colour, so white text on it reaches 14.5:1 contrast (AAA for normal text). The nearest named colour is Dark slate grey.

Colour values

#042B49#042B49
HEX#042B49
RGBrgb(4, 43, 73)
RGB (0–1)0.0157, 0.1686, 0.2863
RGB percentages1.6%, 16.9%, 28.6%
HSLhsl(206.1, 89.6%, 15.1%)
HSV / HSBhsv(206.1, 94.5%, 28.6%)
CMYK94.5%, 41.1%, 0%, 71.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer273,225
CSS custom property--colour: #042B49;

Brightness & contrast

Relative luminance0.02235WCAG 2.x, 0 is black and 1 is white
Perceived brightness41.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.51:1
Contrast with white14.51:1WCAG normal text: AAA
Contrast with black1.45:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#FBD4B6

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1D2D4Ano red cones; affects about 1% of men; ΔE 4.7 from the original
Deuteranopia#122648no green cones; the most common form, about 1% of men; ΔE 5.7 from the original
Tritanopia#003236no blue cones; rare, and affects men and women equally; ΔE 20.5 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.51:1WCAG large text: AAA
Contrast with black, large text1.45:1WCAG large text: Fail

Named colours

Dark slate grey · ΔE 26.3Black · ΔE 27.9Dim grey · ΔE 35.6Dark slateblue · ΔE 35.8Steel blue · ΔE 37.3Slate grey · ΔE 38.1
Nearest named CSS colourDark slate grey (#2F4F4F)ΔE 26.3, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#492204
Analogous#044944, #040949
Triadic#49042B, #2B4904
Split complementary#490408, #494504
Tetradic#450449, #492204, #094904

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#269AF3
Lighter +30%#0C80DA
Lighter +20%#0964AA
Lighter +10%#074779
Darker −10%#010F19
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002C4D
Less saturated −25%#0E2A3F

Channel breakdown

R4
G43
B73
Red4 (1.6%)
Green43 (16.9%)
Blue73 (28.6%)
Hue206.09°
Saturation (HSL)89.61%
Lightness15.1%
Dominant channelBlue
Hex per channelR 04 · G 2B · B 49

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Every value on this page was computed from “042b49” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.