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Colour

#004CBB

  • #004CBB
  • Blue
  • Dark
  • Nearest: Royal blue

#004CBB is a blue with RGB values 0, 76, 187 and HSL 216°, 100%, 37%. It is a dark colour, so white text on it reaches 7.6:1 contrast (AAA for normal text). The nearest named colour is Royal blue.

Colour values

#004CBB#004CBB
HEX#004CBB
RGBrgb(0, 76, 187)
RGB (0–1)0, 0.298, 0.7333
RGB percentages0%, 29.8%, 73.3%
HSLhsl(215.6, 100%, 36.7%)
HSV / HSBhsv(215.6, 100%, 73.3%)
CMYK100%, 59.4%, 0%, 26.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer19,643
CSS custom property--colour: #004CBB;

Brightness & contrast

Relative luminance0.08757WCAG 2.x, 0 is black and 1 is white
Perceived brightness85.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.63:1
Contrast with white7.63:1WCAG normal text: AAA
Contrast with black2.75:1WCAG normal text: Fail
Greyscale equivalent#444444
Inverted#FFB344

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#005CBFno red cones; affects about 1% of men; ΔE 11.6 from the original
Deuteranopia#004CB9no green cones; the most common form, about 1% of men; ΔE 1.2 from the original
Tritanopia#00697Cno blue cones; rare, and affects men and women equally; ΔE 63.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.63:1WCAG large text: AAA
Contrast with black, large text2.75:1WCAG large text: Fail

Named colours

Royal blue · ΔE 12.5Slate blue · ΔE 15.4Dark slateblue · ΔE 21.9Medium slateblue · ΔE 22.8Rebecca purple · ΔE 23.9Midnight blue · ΔE 24.8
Nearest named CSS colourRoyal blue (#4169E1)ΔE 12.46, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BB6F00
Analogous#00A9BB, #1200BB
Triadic#BB004C, #4CBB00
Split complementary#BB1200, #A9BB00
Tetradic#BB00A9, #BB6F00, #00BB12

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#88B8FF
Lighter +30%#559AFF
Lighter +20%#227CFF
Lighter +10%#0061EE
Darker −10%#003788
Darker −20%#002355
Darker −30%#000E22
Darker −40%#000000
More saturated +25%#004CBB
Less saturated −25%#1750A4

Channel breakdown

R0
G76
B187
Red0 (0%)
Green76 (29.8%)
Blue187 (73.3%)
Hue215.61°
Saturation (HSL)100%
Lightness36.67%
Dominant channelBlue
Hex per channelR 00 · G 4C · B BB

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Every value on this page was computed from “004cbb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.