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Colour

#3A7DDC

  • #3A7DDC
  • Blue
  • Dark
  • Nearest: Cornflower blue

#3A7DDC is a blue with RGB values 58, 125, 220 and HSL 215°, 70%, 55%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#3A7DDC#3A7DDC
HEX#3A7DDC
RGBrgb(58, 125, 220)
RGB (0–1)0.2275, 0.4902, 0.8627
RGB percentages22.7%, 49%, 86.3%
HSLhsl(215.2, 69.8%, 54.5%)
HSV / HSBhsv(215.2, 73.6%, 86.3%)
CMYK73.6%, 43.2%, 0%, 13.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,833,308
CSS custom property--colour: #3A7DDC;

Brightness & contrast

Relative luminance0.20734WCAG 2.x, 0 is black and 1 is white
Perceived brightness125.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.15:1
Contrast with white4.08:1WCAG normal text: Fail
Contrast with black5.15:1WCAG normal text: AA
Greyscale equivalent#767676
Inverted#C58223

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4E86E0no red cones; affects about 1% of men; ΔE 5 from the original
Deuteranopia#2F77DAno green cones; the most common form, about 1% of men; ΔE 3.6 from the original
Tritanopia#0093A2no blue cones; rare, and affects men and women equally; ΔE 53.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.08:1WCAG large text: AA
Contrast with black, large text5.15:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 10.9Dodgerblue · ΔE 11Royal blue · ΔE 19.2Slate blue · ΔE 26.2Medium purple · ΔE 26.3Steel blue · ΔE 27.1
Nearest named CSS colourCornflower blue (#6495ED)ΔE 10.86, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#DC993A
Analogous#3ACEDC, #483ADC
Triadic#DC3A7D, #7DDC3A
Split complementary#DC483A, #CEDC3A
Tetradic#DC3ACE, #DC993A, #3ADC48

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#E7EFFB
Lighter +30%#BCD3F3
Lighter +20%#91B6EB
Lighter +10%#659AE4
Darker −10%#2264C1
Darker −20%#1B4D95
Darker −30%#13376A
Darker −40%#0B213F
More saturated +25%#1D78F9
Less saturated −25%#5782BF

Channel breakdown

R58
G125
B220
Red58 (22.7%)
Green125 (49%)
Blue220 (86.3%)
Hue215.19°
Saturation (HSL)69.83%
Lightness54.51%
Dominant channelBlue
Hex per channelR 3A · G 7D · B DC

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Every value on this page was computed from “3a7ddc” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.