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Recognised as Colour

#1D50CF

  • #1D50CF
  • Blue
  • Dark
  • Nearest: Royal blue

#1D50CF is a blue with RGB values 29, 80, 207 and HSL 223°, 75%, 46%. It is a dark colour, so white text on it reaches 6.8:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#1D50CF#1D50CF
HEX#1D50CF
RGBrgb(29, 80, 207)
RGB (0–1)0.1137, 0.3137, 0.8118
RGB percentages11.4%, 31.4%, 81.2%
HSLhsl(222.8, 75.4%, 46.3%)
HSV / HSBhsv(222.8, 86%, 81.2%)
CMYK86%, 61.4%, 0%, 18.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,921,231
CSS custom property--colour: #1D50CF;

Brightness & contrast

Relative luminance0.10504WCAG 2.x, 0 is black and 1 is white
Perceived brightness94.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.77:1
Contrast with white6.77:1WCAG normal text: AA
Contrast with black3.1:1WCAG normal text: Fail
Greyscale equivalent#4E4E4E
Inverted#E2AF30

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0064D3no red cones; affects about 1% of men; ΔE 15.1 from the original
Deuteranopia#0053CDno green cones; the most common form, about 1% of men; ΔE 4.2 from the original
Tritanopia#007188no blue cones; rare, and affects men and women equally; ΔE 70.9 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text6.77:1WCAG large text: AAA
Contrast with black, large text3.1:1WCAG large text: AA

Named colours

Royal blue · ΔE 11.7Slate blue · ΔE 14.3Medium slateblue · ΔE 16.8Rebecca purple · ΔE 25.8Medium purple · ΔE 26Dark slateblue · ΔE 29.5
Nearest named CSS colourRoyal blue (#4169E1)ΔE 11.74, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#CF9C1D
Analogous#1DA9CF, #431DCF
Triadic#CF1D50, #50CF1D
Split complementary#CF431D, #A9CF1D
Tetradic#CF1DA9, #CF9C1D, #1DCF43

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#C2D1F6
Lighter +30%#95AFF0
Lighter +20%#688DEA
Lighter +10%#3B6CE4
Darker −10%#173FA2
Darker −20%#102D76
Darker −30%#0A1C49
Darker −40%#040B1C
More saturated +25%#0044EC
Less saturated −25%#3B5DB1

Channel breakdown

R29
G80
B207
Red29 (11.4%)
Green80 (31.4%)
Blue207 (81.2%)
Hue222.81°
Saturation (HSL)75.42%
Lightness46.27%
Dominant channelBlue
Hex per channelR 1D · G 50 · B CF

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Every value on this page was computed from “1d50cf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.