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Recognised as Colour

#2D5DA5

  • #2D5DA5
  • Blue
  • Dark
  • Nearest: Dark slateblue

#2D5DA5 is a blue with RGB values 45, 93, 165 and HSL 216°, 57%, 41%. It is a dark colour, so white text on it reaches 6.5:1 contrast (AA for normal text). The nearest named colour is Dark slateblue.

Colour values

#2D5DA5#2D5DA5
HEX#2D5DA5
RGBrgb(45, 93, 165)
RGB (0–1)0.1765, 0.3647, 0.6471
RGB percentages17.6%, 36.5%, 64.7%
HSLhsl(216, 57.1%, 41.2%)
HSV / HSBhsv(216, 72.7%, 64.7%)
CMYK72.7%, 43.6%, 0%, 35.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,973,093
CSS custom property--colour: #2D5DA5;

Brightness & contrast

Relative luminance0.11103WCAG 2.x, 0 is black and 1 is white
Perceived brightness93.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.52:1
Contrast with white6.52:1WCAG normal text: AA
Contrast with black3.22:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#D2A25A

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3A64A8no red cones; affects about 1% of men; ΔE 4 from the original
Deuteranopia#2559A4no green cones; the most common form, about 1% of men; ΔE 2.7 from the original
Tritanopia#006E79no blue cones; rare, and affects men and women equally; ΔE 43.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.52:1WCAG large text: AAA
Contrast with black, large text3.22:1WCAG large text: AA

Named colours

Dark slateblue · ΔE 19.3Steel blue · ΔE 21.5Cornflower blue · ΔE 22.9Dodgerblue · ΔE 27.9Royal blue · ΔE 28.9Slate blue · ΔE 31
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.28, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A5752D
Analogous#2D99A5, #392DA5
Triadic#A52D5D, #5DA52D
Split complementary#A5392D, #99A52D
Tetradic#A52D99, #A5752D, #2DA539

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B4CAEA
Lighter +30%#8CADE0
Lighter +20%#6391D5
Lighter +10%#3B74CA
Darker −10%#22467D
Darker −20%#173055
Darker −30%#0C192D
Darker −40%#010305
More saturated +25%#1358BF
Less saturated −25%#47628B

Channel breakdown

R45
G93
B165
Red45 (17.6%)
Green93 (36.5%)
Blue165 (64.7%)
Hue216°
Saturation (HSL)57.14%
Lightness41.18%
Dominant channelBlue
Hex per channelR 2D · G 5D · B A5

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Every value on this page was computed from “2d5da5” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.