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Recognised as Colour

#42589E

  • #42589E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#42589E is a blue with RGB values 66, 88, 158 and HSL 226°, 41%, 44%. It is a dark colour, so white text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#42589E#42589E
HEX#42589E
RGBrgb(66, 88, 158)
RGB (0–1)0.2588, 0.3451, 0.6196
RGB percentages25.9%, 34.5%, 62%
HSLhsl(225.7, 41.1%, 43.9%)
HSV / HSBhsv(225.7, 58.2%, 62%)
CMYK58.2%, 44.3%, 0%, 38%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,348,062
CSS custom property--colour: #42589E;

Brightness & contrast

Relative luminance0.10606WCAG 2.x, 0 is black and 1 is white
Perceived brightness93.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.73:1
Contrast with white6.73:1WCAG normal text: AA
Contrast with black3.12:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#BDA761

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3960A1no red cones; affects about 1% of men; ΔE 6.4 from the original
Deuteranopia#2D589Dno green cones; the most common form, about 1% of men; ΔE 4.6 from the original
Tritanopia#006873no blue cones; rare, and affects men and women equally; ΔE 44 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.73:1WCAG large text: AAA
Contrast with black, large text3.12:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 15Steel blue · ΔE 23.8Cornflower blue · ΔE 24.9Slate blue · ΔE 29Royal blue · ΔE 29.1Medium purple · ΔE 29.8
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.99, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9E8842
Analogous#42869E, #5A429E
Triadic#9E4258, #589E42
Split complementary#9E5A42, #869E42
Tetradic#9E4286, #9E8842, #429E5A

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C5CDE7
Lighter +30%#A1AED8
Lighter +20%#7D8FC9
Lighter +10%#5970BA
Darker −10%#33447A
Darker −20%#243056
Darker −30%#151C32
Darker −40%#06080E
More saturated +25%#2649BA
Less saturated −25%#5E6782

Channel breakdown

R66
G88
B158
Red66 (25.9%)
Green88 (34.5%)
Blue158 (62%)
Hue225.65°
Saturation (HSL)41.07%
Lightness43.92%
Dominant channelBlue
Hex per channelR 42 · G 58 · B 9E

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Every value on this page was computed from “42589e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.