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Recognised as Colour

#478FD9

  • #478FD9
  • Blue
  • Dark
  • Nearest: Cornflower blue

#478FD9 is a blue with RGB values 71, 143, 217 and HSL 210°, 66%, 56%. 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

#478FD9#478FD9
HEX#478FD9
RGBrgb(71, 143, 217)
RGB (0–1)0.2784, 0.5608, 0.851
RGB percentages27.8%, 56.1%, 85.1%
HSLhsl(210.4, 65.8%, 56.5%)
HSV / HSBhsv(210.4, 67.3%, 85.1%)
CMYK67.3%, 34.1%, 0%, 14.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,689,881
CSS custom property--colour: #478FD9;

Brightness & contrast

Relative luminance0.25994WCAG 2.x, 0 is black and 1 is white
Perceived brightness137.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.2:1
Contrast with white3.39:1WCAG normal text: Fail
Contrast with black6.2:1WCAG normal text: AA
Greyscale equivalent#858585
Inverted#B87026

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6E93DCno red cones; affects about 1% of men; ΔE 7.7 from the original
Deuteranopia#5A85D8no green cones; the most common form, about 1% of men; ΔE 9.6 from the original
Tritanopia#00A0AAno blue cones; rare, and affects men and women equally; ΔE 43.3 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.39:1WCAG large text: AA
Contrast with black, large text6.2:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 10.4Steel blue · ΔE 14.4Dodgerblue · ΔE 21Deep skyblue · ΔE 23.7Light skyblue · ΔE 29.4Light slate grey · ΔE 33.5
Nearest named CSS colourCornflower blue (#6495ED)ΔE 10.4, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D99147
Analogous#47D8D9, #4847D9
Triadic#D9478F, #8FD947
Split complementary#D94847, #D8D947
Tetradic#D947D8, #D99147, #47D948

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#F0F6FC
Lighter +30%#C6DCF3
Lighter +20%#9CC2EA
Lighter +10%#71A9E2
Darker −10%#2975C4
Darker −20%#205C9A
Darker −30%#174370
Darker −40%#0E2A46
More saturated +25%#2B8FF5
Less saturated −25%#638FBD

Channel breakdown

R71
G143
B217
Red71 (27.8%)
Green143 (56.1%)
Blue217 (85.1%)
Hue210.41°
Saturation (HSL)65.77%
Lightness56.47%
Dominant channelBlue
Hex per channelR 47 · G 8F · B D9

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Every value on this page was computed from “478fd9” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.