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Recognised as Colour

#042850

  • #042850
  • Blue
  • Dark
  • Nearest: Dark slateblue

#042850 is a blue with RGB values 4, 40, 80 and HSL 212°, 90%, 16%. It is a dark colour, so white text on it reaches 14.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#042850#042850
HEX#042850
RGBrgb(4, 40, 80)
RGB (0–1)0.0157, 0.1569, 0.3137
RGB percentages1.6%, 15.7%, 31.4%
HSLhsl(211.6, 90.5%, 16.5%)
HSV / HSBhsv(211.6, 95%, 31.4%)
CMYK95%, 50%, 0%, 68.6%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer272,464
CSS custom property--colour: #042850;

Brightness & contrast

Relative luminance0.02123WCAG 2.x, 0 is black and 1 is white
Perceived brightness40.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.74:1
Contrast with white14.74:1WCAG normal text: AAA
Contrast with black1.42:1WCAG normal text: Fail
Greyscale equivalent#232323
Inverted#FBD7AF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#122C52no red cones; affects about 1% of men; ΔE 2.7 from the original
Deuteranopia#01254Fno green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#003238no blue cones; rare, and affects men and women equally; ΔE 26.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.74:1WCAG large text: AAA
Contrast with black, large text1.42:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 29.1Black · ΔE 32.7Dark slate grey · ΔE 33.2Midnight blue · ΔE 34.2Steel blue · ΔE 37.8Dim grey · ΔE 40.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 29.11, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#502C04
Analogous#044E50, #060450
Triadic#500428, #285004
Split complementary#500604, #4E5004
Tetradic#50044E, #502C04, #045006

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#2C8BF4
Lighter +30%#0B71E2
Lighter +20%#0959B1
Lighter +10%#064081
Darker −10%#02101F
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#002854
Less saturated −25%#0E2945

Channel breakdown

R4
G40
B80
Red4 (1.6%)
Green40 (15.7%)
Blue80 (31.4%)
Hue211.58°
Saturation (HSL)90.48%
Lightness16.47%
Dominant channelBlue
Hex per channelR 04 · G 28 · B 50

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Every value on this page was computed from “hex 042850” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.