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Recognised as Colour

#045CCB

  • #045CCB
  • Blue
  • Dark
  • Nearest: Royal blue

#045CCB is a blue with RGB values 4, 92, 203 and HSL 213°, 96%, 41%. It is a dark colour, so white text on it reaches 6.2:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#045CCB#045CCB
HEX#045CCB
RGBrgb(4, 92, 203)
RGB (0–1)0.0157, 0.3608, 0.7961
RGB percentages1.6%, 36.1%, 79.6%
HSLhsl(213.5, 96.1%, 40.6%)
HSV / HSBhsv(213.5, 98%, 79.6%)
CMYK98%, 54.7%, 0%, 20.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer285,899
CSS custom property--colour: #045CCB;

Brightness & contrast

Relative luminance0.11992WCAG 2.x, 0 is black and 1 is white
Perceived brightness98.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.18:1
Contrast with white6.18:1WCAG normal text: AA
Contrast with black3.4:1WCAG normal text: Fail
Greyscale equivalent#515151
Inverted#FBA334

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#006ACFno red cones; affects about 1% of men; ΔE 9.8 from the original
Deuteranopia#0059C9no green cones; the most common form, about 1% of men; ΔE 1.5 from the original
Tritanopia#00788Ano blue cones; rare, and affects men and women equally; ΔE 62.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.18:1WCAG large text: AAA
Contrast with black, large text3.4:1WCAG large text: AA

Named colours

Royal blue · ΔE 8.3Slate blue · ΔE 16.1Dodgerblue · ΔE 21.6Medium slateblue · ΔE 22.5Dark slateblue · ΔE 24.2Medium purple · ΔE 24.6
Nearest named CSS colourRoyal blue (#4169E1)ΔE 8.32, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CB7304
Analogous#04BFCB, #0F04CB
Triadic#CB045C, #5CCB04
Split complementary#CB1004, #BFCB04
Tetradic#CB04C0, #CB7304, #04CB10

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9EC8FD
Lighter +30%#6CACFC
Lighter +20%#3A8FFB
Lighter +10%#0873FA
Darker −10%#034599
Darker −20%#022F67
Darker −30%#011835
Darker −40%#000103
More saturated +25%#005CCF
Less saturated −25%#1E5FB1

Channel breakdown

R4
G92
B203
Red4 (1.6%)
Green92 (36.1%)
Blue203 (79.6%)
Hue213.47°
Saturation (HSL)96.14%
Lightness40.59%
Dominant channelBlue
Hex per channelR 04 · G 5C · B CB

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Every value on this page was computed from “045ccb” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.