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Recognised as Colour

#153CF3

  • #153CF3
  • Blue
  • Dark
  • Nearest: Medium blue

#153CF3 is a blue with RGB values 21, 60, 243 and HSL 229°, 90%, 52%. It is a dark colour, so white text on it reaches 7.1:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#153CF3#153CF3
HEX#153CF3
RGBrgb(21, 60, 243)
RGB (0–1)0.0824, 0.2353, 0.9529
RGB percentages8.2%, 23.5%, 95.3%
HSLhsl(229.5, 90.2%, 51.8%)
HSV / HSBhsv(229.5, 91.4%, 95.3%)
CMYK91.4%, 75.3%, 0%, 4.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,391,859
CSS custom property--colour: #153CF3;

Brightness & contrast

Relative luminance0.09862WCAG 2.x, 0 is black and 1 is white
Perceived brightness94.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.06:1
Contrast with white7.06:1WCAG normal text: AAA
Contrast with black2.97:1WCAG normal text: Fail
Greyscale equivalent#414141
Inverted#EAC30C

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0063F8no red cones; affects about 1% of men; ΔE 26.8 from the original
Deuteranopia#004DF0no green cones; the most common form, about 1% of men; ΔE 13.5 from the original
Tritanopia#007496no blue cones; rare, and affects men and women equally; ΔE 97.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.06:1WCAG large text: AAA
Contrast with black, large text2.97:1WCAG large text: Fail

Named colours

Medium blue · ΔE 16.4Blue violet · ΔE 22.4Blue · ΔE 27.9Dark violet · ΔE 29.5Dark blue · ΔE 33.4Dark orchid · ΔE 33.8
Nearest named CSS colourMedium blue (#0000CD)ΔE 16.45, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#F3CC15
Analogous#15ABF3, #5D15F3
Triadic#F3153C, #3CF315
Split complementary#F35D15, #ABF315
Tetradic#F315AB, #F3CC15, #15F35D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#D7DEFD
Lighter +30%#A7B5FA
Lighter +20%#768DF8
Lighter +10%#4664F5
Darker −10%#0A2CCB
Darker −20%#08229A
Darker −30%#05176A
Darker −40%#030C39
More saturated +25%#0934FF
Less saturated −25%#3450D4

Channel breakdown

R21
G60
B243
Red21 (8.2%)
Green60 (23.5%)
Blue243 (95.3%)
Hue229.46°
Saturation (HSL)90.24%
Lightness51.76%
Dominant channelBlue
Hex per channelR 15 · G 3C · B F3

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Every value on this page was computed from “153cf3” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.