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Colour

#42599B

  • #42599B
  • Blue
  • Dark
  • Nearest: Dark slateblue

#42599B is a blue with RGB values 66, 89, 155 and HSL 224°, 40%, 43%. 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

#42599B#42599B
HEX#42599B
RGBrgb(66, 89, 155)
RGB (0–1)0.2588, 0.349, 0.6078
RGB percentages25.9%, 34.9%, 60.8%
HSLhsl(224.5, 40.3%, 43.3%)
HSV / HSBhsv(224.5, 57.4%, 60.8%)
CMYK57.4%, 42.6%, 0%, 39.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,348,315
CSS custom property--colour: #42599B;

Brightness & contrast

Relative luminance0.1067WCAG 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 6.7:1
Contrast with white6.7:1WCAG normal text: AA
Contrast with black3.13:1WCAG normal text: Fail
Greyscale equivalent#595959
Inverted#BDA664

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3D609Eno red cones; affects about 1% of men; ΔE 5 from the original
Deuteranopia#31589Ano green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#076872no blue cones; rare, and affects men and women equally; ΔE 41.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.7:1WCAG large text: AAA
Contrast with black, large text3.13:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 16.8Steel blue · ΔE 21.8Cornflower blue · ΔE 25.4Slate blue · ΔE 31.4Royal blue · ΔE 31.5Medium purple · ΔE 31.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.76, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9B8442
Analogous#42869B, #57429B
Triadic#9B4259, #599B42
Split complementary#9B5742, #869B42
Tetradic#9B4286, #9B8442, #429B57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C3CCE6
Lighter +30%#A0AED6
Lighter +20%#7C8FC7
Lighter +10%#5871B8
Darker −10%#334477
Darker −20%#243053
Darker −30%#141B30
Darker −40%#05070C
More saturated +25%#264CB7
Less saturated −25%#5E667F

Channel breakdown

R66
G89
B155
Red66 (25.9%)
Green89 (34.9%)
Blue155 (60.8%)
Hue224.49°
Saturation (HSL)40.27%
Lightness43.33%
Dominant channelBlue
Hex per channelR 42 · G 59 · B 9B

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Every value on this page was computed from “42599b” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.