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Recognised as Colour

#2D5ADA

  • #2D5ADA
  • Blue
  • Dark
  • Nearest: Royal blue

#2D5ADA is a blue with RGB values 45, 90, 218 and HSL 224°, 70%, 52%. It is a dark colour, so white text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#2D5ADA#2D5ADA
HEX#2D5ADA
RGBrgb(45, 90, 218)
RGB (0–1)0.1765, 0.3529, 0.8549
RGB percentages17.6%, 35.3%, 85.5%
HSLhsl(224.4, 70%, 51.6%)
HSV / HSBhsv(224.4, 79.4%, 85.5%)
CMYK79.4%, 58.7%, 0%, 14.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,972,378
CSS custom property--colour: #2D5ADA;

Brightness & contrast

Relative luminance0.12932WCAG 2.x, 0 is black and 1 is white
Perceived brightness103.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.86:1
Contrast with white5.86:1WCAG normal text: AA
Contrast with black3.59:1WCAG normal text: Fail
Greyscale equivalent#5A5A5A
Inverted#D2A525

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006DDEno red cones; affects about 1% of men; ΔE 14.8 from the original
Deuteranopia#005DD8no green cones; the most common form, about 1% of men; ΔE 5.1 from the original
Tritanopia#007B91no blue cones; rare, and affects men and women equally; ΔE 71.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.86:1WCAG large text: AAA
Contrast with black, large text3.59:1WCAG large text: AA

Named colours

Royal blue · ΔE 8.3Slate blue · ΔE 13.2Medium slateblue · ΔE 14.5Medium purple · ΔE 23.9Rebecca purple · ΔE 27.3Dodgerblue · ΔE 27.6
Nearest named CSS colourRoyal blue (#4169E1)ΔE 8.32, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DAAD2D
Analogous#2DB0DA, #572DDA
Triadic#DA2D5A, #5ADA2D
Split complementary#DA572D, #B1DA2D
Tetradic#DA2DB0, #DAAD2D, #2DDA57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DAE2F9
Lighter +30%#AFC0F1
Lighter +20%#849EE9
Lighter +10%#587CE2
Darker −10%#2046B4
Darker −20%#183589
Darker −30%#10255E
Darker −40%#091432
More saturated +25%#0E4BF9
Less saturated −25%#4C69BB

Channel breakdown

R45
G90
B218
Red45 (17.6%)
Green90 (35.3%)
Blue218 (85.5%)
Hue224.39°
Saturation (HSL)70.04%
Lightness51.57%
Dominant channelBlue
Hex per channelR 2D · G 5A · B DA

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Every value on this page was computed from “2d5ada” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.