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Recognised as Colour

#425BA7

  • #425BA7
  • Blue
  • Dark
  • Nearest: Dark slateblue

#425BA7 is a blue with RGB values 66, 91, 167 and HSL 225°, 43%, 46%. It is a dark colour, so white text on it reaches 6.4:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#425BA7#425BA7
HEX#425BA7
RGBrgb(66, 91, 167)
RGB (0–1)0.2588, 0.3569, 0.6549
RGB percentages25.9%, 35.7%, 65.5%
HSLhsl(225.1, 43.3%, 45.7%)
HSV / HSBhsv(225.1, 60.5%, 65.5%)
CMYK60.5%, 45.5%, 0%, 34.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,348,839
CSS custom property--colour: #425BA7;

Brightness & contrast

Relative luminance0.1143WCAG 2.x, 0 is black and 1 is white
Perceived brightness96.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.39:1
Contrast with white6.39:1WCAG normal text: AA
Contrast with black3.29:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#BDA458

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3864AAno red cones; affects about 1% of men; ΔE 7.2 from the original
Deuteranopia#295BA5no green cones; the most common form, about 1% of men; ΔE 5.2 from the original
Tritanopia#006C79no blue cones; rare, and affects men and women equally; ΔE 46.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.39:1WCAG large text: AAA
Contrast with black, large text3.29:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 14.9Cornflower blue · ΔE 22.9Steel blue · ΔE 25.2Royal blue · ΔE 25.5Slate blue · ΔE 26Medium purple · ΔE 27.2
Nearest named CSS colourDark slateblue (#483D8B)ΔE 14.88, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A78E42
Analogous#428DA7, #5C42A7
Triadic#A7425B, #5BA742
Split complementary#A75C42, #8DA742
Tetradic#A7428D, #A78E42, #42A75C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CBD3EA
Lighter +30%#A6B3DC
Lighter +20%#8294CD
Lighter +10%#5D75BF
Darker −10%#344782
Darker −20%#25335E
Darker −30%#171F39
Darker −40%#080B15
More saturated +25%#254CC4
Less saturated −25%#5F6A8A

Channel breakdown

R66
G91
B167
Red66 (25.9%)
Green91 (35.7%)
Blue167 (65.5%)
Hue225.15°
Saturation (HSL)43.35%
Lightness45.69%
Dominant channelBlue
Hex per channelR 42 · G 5B · B A7

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Every value on this page was computed from “425ba7” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.