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Recognised as Colour

#2D57DE

  • #2D57DE
  • Blue
  • Dark
  • Nearest: Royal blue

#2D57DE is a blue with RGB values 45, 87, 222 and HSL 226°, 73%, 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

#2D57DE#2D57DE
HEX#2D57DE
RGBrgb(45, 87, 222)
RGB (0–1)0.1765, 0.3412, 0.8706
RGB percentages17.6%, 34.1%, 87.1%
HSLhsl(225.8, 72.8%, 52.4%)
HSV / HSBhsv(225.8, 79.7%, 87.1%)
CMYK79.7%, 60.8%, 0%, 12.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,971,614
CSS custom property--colour: #2D57DE;

Brightness & contrast

Relative luminance0.12648WCAG 2.x, 0 is black and 1 is white
Perceived brightness103.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.95:1
Contrast with white5.95:1WCAG normal text: AA
Contrast with black3.53:1WCAG normal text: Fail
Greyscale equivalent#585858
Inverted#D2A821

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006CE2no red cones; affects about 1% of men; ΔE 16.2 from the original
Deuteranopia#005CDBno green cones; the most common form, about 1% of men; ΔE 6.9 from the original
Tritanopia#007A92no blue cones; rare, and affects men and women equally; ΔE 74.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.95:1WCAG large text: AAA
Contrast with black, large text3.53:1WCAG large text: AA

Named colours

Royal blue · ΔE 12.4Medium slateblue · ΔE 14Slate blue · ΔE 15.4Medium purple · ΔE 26.1Rebecca purple · ΔE 28.5Dodgerblue · ΔE 31.3
Nearest named CSS colourRoyal blue (#4169E1)ΔE 12.38, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DEB42D
Analogous#2DAFDE, #5C2DDE
Triadic#DE2D57, #57DE2D
Split complementary#DE5C2D, #AFDE2D
Tetradic#DE2DAF, #DEB42D, #2DDE5C

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DDE4FA
Lighter +30%#B1C1F3
Lighter +20%#859EEC
Lighter +10%#597AE5
Darker −10%#1D43BB
Darker −20%#16338F
Darker −30%#0F2363
Darker −40%#091336
More saturated +25%#0F47FC
Less saturated −25%#4B67C0

Channel breakdown

R45
G87
B222
Red45 (17.6%)
Green87 (34.1%)
Blue222 (87.1%)
Hue225.76°
Saturation (HSL)72.84%
Lightness52.35%
Dominant channelBlue
Hex per channelR 2D · G 57 · B DE

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Every value on this page was computed from “2d57de” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.