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Recognised as Colour

#2D5CDF

  • #2D5CDF
  • Blue
  • Dark
  • Nearest: Royal blue

#2D5CDF is a blue with RGB values 45, 92, 223 and HSL 224°, 74%, 53%. It is a dark colour, so white text on it reaches 5.7:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#2D5CDF#2D5CDF
HEX#2D5CDF
RGBrgb(45, 92, 223)
RGB (0–1)0.1765, 0.3608, 0.8745
RGB percentages17.6%, 36.1%, 87.5%
HSLhsl(224.2, 73.6%, 52.5%)
HSV / HSBhsv(224.2, 79.8%, 87.5%)
CMYK79.8%, 58.7%, 0%, 12.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,972,895
CSS custom property--colour: #2D5CDF;

Brightness & contrast

Relative luminance0.1354WCAG 2.x, 0 is black and 1 is white
Perceived brightness106 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.66:1
Contrast with white5.66:1WCAG normal text: AA
Contrast with black3.71:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#D2A320

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006FE3no red cones; affects about 1% of men; ΔE 14.7 from the original
Deuteranopia#005FDCno green cones; the most common form, about 1% of men; ΔE 5.5 from the original
Tritanopia#007D95no blue cones; rare, and affects men and women equally; ΔE 72 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.66:1WCAG large text: AAA
Contrast with black, large text3.71:1WCAG large text: AA

Named colours

Royal blue · ΔE 9Medium slateblue · ΔE 14Slate blue · ΔE 14.2Medium purple · ΔE 24.5Dodgerblue · ΔE 27.9Rebecca purple · ΔE 28.6
Nearest named CSS colourRoyal blue (#4169E1)ΔE 8.98, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DFB02D
Analogous#2DB5DF, #572DDF
Triadic#DF2D5C, #5CDF2D
Split complementary#DF572D, #B5DF2D
Tetradic#DF2DB5, #DFB02D, #2DDF57

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DEE5FA
Lighter +30%#B2C3F3
Lighter +20%#86A1EC
Lighter +10%#597EE6
Darker −10%#1D47BC
Darker −20%#163690
Darker −30%#0F2664
Darker −40%#081538
More saturated +25%#0F4EFD
Less saturated −25%#4B6AC1

Channel breakdown

R45
G92
B223
Red45 (17.6%)
Green92 (36.1%)
Blue223 (87.5%)
Hue224.16°
Saturation (HSL)73.55%
Lightness52.55%
Dominant channelBlue
Hex per channelR 2D · G 5C · B DF

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Every value on this page was computed from “2d5cdf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.