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Colour

#648CD3

  • #648CD3
  • Blue
  • Dark
  • Nearest: Cornflower blue

#648CD3 is a blue with RGB values 100, 140, 211 and HSL 218°, 56%, 61%. It is a dark colour, so black text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#648CD3#648CD3
HEX#648CD3
RGBrgb(100, 140, 211)
RGB (0–1)0.3922, 0.549, 0.8275
RGB percentages39.2%, 54.9%, 82.7%
HSLhsl(218.4, 55.8%, 61%)
HSV / HSBhsv(218.4, 52.6%, 82.7%)
CMYK52.6%, 33.6%, 0%, 17.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer6,589,651
CSS custom property--colour: #648CD3;

Brightness & contrast

Relative luminance0.26169WCAG 2.x, 0 is black and 1 is white
Perceived brightness139.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.23:1
Contrast with white3.37:1WCAG normal text: Fail
Contrast with black6.23:1WCAG normal text: AA
Greyscale equivalent#898989
Inverted#9B732C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#7092D6no red cones; affects about 1% of men; ΔE 3.3 from the original
Deuteranopia#6387D1no green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#2A9CA6no blue cones; rare, and affects men and women equally; ΔE 42.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.37:1WCAG large text: AA
Contrast with black, large text6.23:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 9.8Steel blue · ΔE 14.7Dodgerblue · ΔE 23Deep skyblue · ΔE 28.1Light skyblue · ΔE 30.1Light slate grey · ΔE 30.9
Nearest named CSS colourCornflower blue (#6495ED)ΔE 9.81, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D3AB64
Analogous#64C4D3, #7364D3
Triadic#D3648C, #8CD364
Split complementary#D37364, #C4D364
Tetradic#D364C4, #D3AB64, #64D373

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FFFFFF
Lighter +30%#DBE4F5
Lighter +20%#B3C7EA
Lighter +10%#8CA9DE
Darker −10%#3C6FC8
Darker −20%#2E58A3
Darker −30%#23437B
Darker −40%#182D53
More saturated +25%#4B85EC
Less saturated −25%#7D93BA

Channel breakdown

R100
G140
B211
Red100 (39.2%)
Green140 (54.9%)
Blue211 (82.7%)
Hue218.38°
Saturation (HSL)55.78%
Lightness60.98%
Dominant channelBlue
Hex per channelR 64 · G 8C · B D3

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Every value on this page was computed from “648cd3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.