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Recognised as Colour

#2978D4

  • #2978D4
  • Blue
  • Dark
  • Nearest: Cornflower blue

#2978D4 is a blue with RGB values 41, 120, 212 and HSL 212°, 68%, 50%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Cornflower blue.

Colour values

#2978D4#2978D4
HEX#2978D4
RGBrgb(41, 120, 212)
RGB (0–1)0.1608, 0.4706, 0.8314
RGB percentages16.1%, 47.1%, 83.1%
HSLhsl(212.3, 67.6%, 49.6%)
HSV / HSBhsv(212.3, 80.7%, 83.1%)
CMYK80.7%, 43.4%, 0%, 16.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,717,908
CSS custom property--colour: #2978D4;

Brightness & contrast

Relative luminance0.18658WCAG 2.x, 0 is black and 1 is white
Perceived brightness118.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.73:1
Contrast with white4.44:1WCAG normal text: Fail
Contrast with black4.73:1WCAG normal text: AA
Greyscale equivalent#6E6E6E
Inverted#D6872B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#4980D8no red cones; affects about 1% of men; ΔE 5 from the original
Deuteranopia#2671D2no green cones; the most common form, about 1% of men; ΔE 4.6 from the original
Tritanopia#008E9Bno blue cones; rare, and affects men and women equally; ΔE 52.5 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.44:1WCAG large text: AA
Contrast with black, large text4.73:1WCAG large text: AAA

Named colours

Cornflower blue · ΔE 12.6Dodgerblue · ΔE 13.1Royal blue · ΔE 20.6Steel blue · ΔE 25.6Slate blue · ΔE 27.5Medium purple · ΔE 28.2
Nearest named CSS colourCornflower blue (#6495ED)ΔE 12.55, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#D48529
Analogous#29CDD4, #3029D4
Triadic#D42978, #78D429
Split complementary#D43029, #CDD429
Tetradic#D429CD, #D48529, #29D430

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D3E3F6
Lighter +30%#A8C8EE
Lighter +20%#7DAEE6
Lighter +10%#5293DE
Darker −10%#2160A9
Darker −20%#18487F
Darker −30%#102F54
Darker −40%#081729
More saturated +25%#0976F4
Less saturated −25%#497AB4

Channel breakdown

R41
G120
B212
Red41 (16.1%)
Green120 (47.1%)
Blue212 (83.1%)
Hue212.28°
Saturation (HSL)67.59%
Lightness49.61%
Dominant channelBlue
Hex per channelR 29 · G 78 · B D4

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Every value on this page was computed from “2978d4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.