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Recognised as Colour

#123EF1

  • #123EF1
  • Blue
  • Dark
  • Nearest: Medium blue

#123EF1 is a blue with RGB values 18, 62, 241 and HSL 228°, 89%, 51%. It is a dark colour, so white text on it reaches 7:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#123EF1#123EF1
HEX#123EF1
RGBrgb(18, 62, 241)
RGB (0–1)0.0706, 0.2431, 0.9451
RGB percentages7.1%, 24.3%, 94.5%
HSLhsl(228.2, 88.8%, 50.8%)
HSV / HSBhsv(228.2, 92.5%, 94.5%)
CMYK92.5%, 74.3%, 0%, 5.5%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,195,761
CSS custom property--colour: #123EF1;

Brightness & contrast

Relative luminance0.09925WCAG 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 7.04:1
Contrast with white7.04:1WCAG normal text: AAA
Contrast with black2.98:1WCAG normal text: Fail
Greyscale equivalent#424242
Inverted#EDC10E

Colour vision & accessibility

Protanopia#0063F6no red cones; affects about 1% of men; ΔE 25.6 from the original
Deuteranopia#004EEEno green cones; the most common form, about 1% of men; ΔE 13 from the original
Tritanopia#007495no blue cones; rare, and affects men and women equally; ΔE 96 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text7.04:1WCAG large text: AAA
Contrast with black, large text2.98:1WCAG large text: Fail

Named colours

Nearest named CSS colourMedium blue (#0000CD)ΔE 17.75, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

Complementary#F1C512
Analogous#12AEF1, #5512F1
Triadic#F1123E, #3EF112
Split complementary#F15512, #AEF112
Tetradic#F112AE, #F1C512, #12F155

Tints, shades & saturation

Lighter +40%#D3DBFC
Lighter +30%#A2B4FA
Lighter +20%#728CF7
Lighter +10%#4265F4
Darker −10%#0C30C4
Darker −20%#092494
Darker −30%#061864
Darker −40%#030D34
More saturated +25%#0436FF
Less saturated −25%#3151D2

Channel breakdown

R18
G62
B241
Red18 (7.1%)
Green62 (24.3%)
Blue241 (94.5%)
Hue228.16°
Saturation (HSL)88.84%
Lightness50.78%
Dominant channelBlue
Hex per channelR 12 · G 3E · B F1

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Every value on this page was computed from “123ef1” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.