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Recognised as Colour

#0442D0

  • #0442D0
  • Blue
  • Dark
  • Nearest: Medium slateblue

#0442D0 is a blue with RGB values 4, 66, 208 and HSL 222°, 96%, 42%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#0442D0#0442D0
HEX#0442D0
RGBrgb(4, 66, 208)
RGB (0–1)0.0157, 0.2588, 0.8157
RGB percentages1.6%, 25.9%, 81.6%
HSLhsl(221.8, 96.2%, 41.6%)
HSV / HSBhsv(221.8, 98.1%, 81.6%)
CMYK98.1%, 68.3%, 0%, 18.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer279,248
CSS custom property--colour: #0442D0;

Brightness & contrast

Relative luminance0.08476WCAG 2.x, 0 is black and 1 is white
Perceived brightness86.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.79:1
Contrast with white7.79:1WCAG normal text: AAA
Contrast with black2.7:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#FBBD2F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005BD4no red cones; affects about 1% of men; ΔE 18.4 from the original
Deuteranopia#0049CDno green cones; the most common form, about 1% of men; ΔE 7.1 from the original
Tritanopia#006A84no blue cones; rare, and affects men and women equally; ΔE 79 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.79:1WCAG large text: AAA
Contrast with black, large text2.7:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 20.6Slate blue · ΔE 22Royal blue · ΔE 22.3Dark blue · ΔE 23.9Navy · ΔE 26Indigo · ΔE 29.7
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 20.57, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D09204
Analogous#04A8D0, #2C04D0
Triadic#D00442, #42D004
Split complementary#D02C04, #A8D004
Tetradic#D004A8, #D09204, #04D02C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#A3BEFD
Lighter +30%#719BFC
Lighter +20%#3F78FB
Lighter +10%#0D55FA
Darker −10%#03329E
Darker −20%#02226C
Darker −30%#01123A
Darker −40%#000208
More saturated +25%#0040D4
Less saturated −25%#1E4CB5

Channel breakdown

R4
G66
B208
Red4 (1.6%)
Green66 (25.9%)
Blue208 (81.6%)
Hue221.76°
Saturation (HSL)96.23%
Lightness41.57%
Dominant channelBlue
Hex per channelR 04 · G 42 · B D0

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Every value on this page was computed from “0442d0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.