Nerdulator> put something in

Recognised as Colour

#045CFF

  • #045CFF
  • Blue
  • Dark
  • Nearest: Medium slateblue

#045CFF is a blue with RGB values 4, 92, 255 and HSL 219°, 100%, 51%. It is a dark colour, so white text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Medium slateblue.

Colour values

#045CFF#045CFF
HEX#045CFF
RGBrgb(4, 92, 255)
RGB (0–1)0.0157, 0.3608, 1
RGB percentages1.6%, 36.1%, 100%
HSLhsl(219, 100%, 50.8%)
HSV / HSBhsv(219, 98.4%, 100%)
CMYK98.4%, 63.9%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer285,951
CSS custom property--colour: #045CFF;

Brightness & contrast

Relative luminance0.149WCAG 2.x, 0 is black and 1 is white
Perceived brightness111.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.28:1
Contrast with white5.28:1WCAG normal text: AA
Contrast with black3.98:1WCAG normal text: Fail
Greyscale equivalent#555555
Inverted#FBA300

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0077FFno red cones; affects about 1% of men; ΔE 21.5 from the original
Deuteranopia#0061FCno green cones; the most common form, about 1% of men; ΔE 5.5 from the original
Tritanopia#0088A5no blue cones; rare, and affects men and women equally; ΔE 87.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.28:1WCAG large text: AAA
Contrast with black, large text3.98:1WCAG large text: AA

Named colours

Medium slateblue · ΔE 21.6Royal blue · ΔE 25.8Slate blue · ΔE 28.7Blue violet · ΔE 30.6Medium blue · ΔE 33.3Dark orchid · ΔE 35.1
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 21.62, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FFA704
Analogous#04D9FF, #2A04FF
Triadic#FF045C, #5CFF04
Split complementary#FF2904, #DAFF04
Tetradic#FF04D9, #FFA704, #04FF29

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D0E0FF
Lighter +30%#9DBFFF
Lighter +20%#6A9EFF
Lighter +10%#377DFF
Darker −10%#0049D0
Darker −20%#00379D
Darker −30%#00256A
Darker −40%#001337
More saturated +25%#045CFF
Less saturated −25%#2365E0

Channel breakdown

R4
G92
B255
Red4 (1.6%)
Green92 (36.1%)
Blue255 (100%)
Hue218.96°
Saturation (HSL)100%
Lightness50.78%
Dominant channelBlue
Hex per channelR 04 · G 5C · B FF

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

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