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Recognised as Colour

#2D5BE1

  • #2D5BE1
  • Blue
  • Dark
  • Nearest: Royal blue

#2D5BE1 is a blue with RGB values 45, 91, 225 and HSL 225°, 75%, 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

#2D5BE1#2D5BE1
HEX#2D5BE1
RGBrgb(45, 91, 225)
RGB (0–1)0.1765, 0.3569, 0.8824
RGB percentages17.6%, 35.7%, 88.2%
HSLhsl(224.7, 75%, 52.9%)
HSV / HSBhsv(224.7, 80%, 88.2%)
CMYK80%, 59.6%, 0%, 11.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,972,641
CSS custom property--colour: #2D5BE1;

Brightness & contrast

Relative luminance0.13476WCAG 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 5.68:1
Contrast with white5.68:1WCAG normal text: AA
Contrast with black3.7:1WCAG normal text: Fail
Greyscale equivalent#5B5B5B
Inverted#D2A41E

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006FE5no red cones; affects about 1% of men; ΔE 15.4 from the original
Deuteranopia#005FDEno green cones; the most common form, about 1% of men; ΔE 6.2 from the original
Tritanopia#007D95no blue cones; rare, and affects men and women equally; ΔE 73.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.68:1WCAG large text: AAA
Contrast with black, large text3.7:1WCAG large text: AA

Named colours

Royal blue · ΔE 10.7Medium slateblue · ΔE 13.8Slate blue · ΔE 15.1Medium purple · ΔE 25.4Rebecca purple · ΔE 29.1Dodgerblue · ΔE 29.4
Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.71, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#E1B32D
Analogous#2DB5E1, #592DE1
Triadic#E12D5B, #5BE12D
Split complementary#E1592D, #B5E12D
Tetradic#E12DB5, #E1B32D, #2DE159

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DFE6FB
Lighter +30%#B3C4F4
Lighter +20%#86A1EE
Lighter +10%#5A7EE7
Darker −10%#1B45C0
Darker −20%#153593
Darker −30%#0F2566
Darker −40%#08153A
More saturated +25%#0F4CFF
Less saturated −25%#4B6AC3

Channel breakdown

R45
G91
B225
Red45 (17.6%)
Green91 (35.7%)
Blue225 (88.2%)
Hue224.67°
Saturation (HSL)75%
Lightness52.94%
Dominant channelBlue
Hex per channelR 2D · G 5B · B E1

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Every value on this page was computed from “2d5be1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.