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Colour

#123FCA

  • #123FCA
  • Blue
  • Dark
  • Nearest: Medium slateblue

#123FCA is a blue with RGB values 18, 63, 202 and HSL 225°, 84%, 43%. It is a dark colour, so white text on it reaches 8.1:1 contrast (AAA for normal text). The nearest named colour is Medium slateblue.

Colour values

#123FCA#123FCA
HEX#123FCA
RGBrgb(18, 63, 202)
RGB (0–1)0.0706, 0.2471, 0.7922
RGB percentages7.1%, 24.7%, 79.2%
HSLhsl(225.3, 83.6%, 43.1%)
HSV / HSBhsv(225.3, 91.1%, 79.2%)
CMYK91.1%, 68.8%, 0%, 20.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,195,978
CSS custom property--colour: #123FCA;

Brightness & contrast

Relative luminance0.07948WCAG 2.x, 0 is black and 1 is white
Perceived brightness84.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.11:1
Contrast with white8.11:1WCAG normal text: AAA
Contrast with black2.59:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#EDC035

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0058CEno red cones; affects about 1% of men; ΔE 18.5 from the original
Deuteranopia#0047C7no green cones; the most common form, about 1% of men; ΔE 8 from the original
Tritanopia#00667Fno blue cones; rare, and affects men and women equally; ΔE 78 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.11:1WCAG large text: AAA
Contrast with black, large text2.59:1WCAG large text: Fail

Named colours

Medium slateblue · ΔE 20.6Slate blue · ΔE 21.1Royal blue · ΔE 22.2Dark blue · ΔE 22.4Navy · ΔE 24.3Indigo · ΔE 27.8
Nearest named CSS colourMedium slateblue (#7B68EE)ΔE 20.64, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CA9D12
Analogous#129BCA, #4112CA
Triadic#CA123F, #3FCA12
Split complementary#CA4112, #9BCA12
Tetradic#CA129B, #CA9D12, #12CA41

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B0C2F8
Lighter +30%#819DF4
Lighter +20%#5279F0
Lighter +10%#2454EB
Darker −10%#0E309B
Darker −20%#0A226C
Darker −30%#05133E
Darker −40%#01050F
More saturated +25%#0036DC
Less saturated −25%#2D4DAF

Channel breakdown

R18
G63
B202
Red18 (7.1%)
Green63 (24.7%)
Blue202 (79.2%)
Hue225.33°
Saturation (HSL)83.64%
Lightness43.14%
Dominant channelBlue
Hex per channelR 12 · G 3F · B CA

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Every value on this page was computed from “123fca” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.