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Recognised as Colour

#1D83BF

  • #1D83BF
  • Blue
  • Dark
  • Nearest: Steel blue

#1D83BF is a blue with RGB values 29, 131, 191 and HSL 202°, 74%, 43%. It is a dark colour, so black text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Steel blue.

Colour values

#1D83BF#1D83BF
HEX#1D83BF
RGBrgb(29, 131, 191)
RGB (0–1)0.1137, 0.5137, 0.749
RGB percentages11.4%, 51.4%, 74.9%
HSLhsl(202.2, 73.6%, 43.1%)
HSV / HSBhsv(202.2, 84.8%, 74.9%)
CMYK84.8%, 31.4%, 0%, 25.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,934,271
CSS custom property--colour: #1D83BF;

Brightness & contrast

Relative luminance0.20255WCAG 2.x, 0 is black and 1 is white
Perceived brightness120.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.05:1
Contrast with white4.16:1WCAG normal text: Fail
Contrast with black5.05:1WCAG normal text: AA
Greyscale equivalent#727272
Inverted#E27C40

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#6684C2no red cones; affects about 1% of men; ΔE 13.6 from the original
Deuteranopia#5076BEno green cones; the most common form, about 1% of men; ΔE 15.3 from the original
Tritanopia#009298no blue cones; rare, and affects men and women equally; ΔE 35.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.16:1WCAG large text: AA
Contrast with black, large text5.05:1WCAG large text: AAA

Named colours

Steel blue · ΔE 7.3Cornflower blue · ΔE 21.1Deep skyblue · ΔE 23.6Light slate grey · ΔE 28.6Slate grey · ΔE 28.9Light skyblue · ΔE 29.9
Nearest named CSS colourSteel blue (#4682B4)ΔE 7.31, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#BF591D
Analogous#1DBFAA, #1D32BF
Triadic#BF1D83, #83BF1D
Split complementary#BF1D32, #BFAA1D
Tetradic#AA1DBF, #BF591D, #32BF1D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B4DCF4
Lighter +30%#88C8ED
Lighter +20%#5CB3E6
Lighter +10%#309EDF
Darker −10%#166593
Darker −20%#104666
Darker −30%#09283A
Darker −40%#020A0E
More saturated +25%#028ADB
Less saturated −25%#397CA3

Channel breakdown

R29
G131
B191
Red29 (11.4%)
Green131 (51.4%)
Blue191 (74.9%)
Hue202.22°
Saturation (HSL)73.64%
Lightness43.14%
Dominant channelBlue
Hex per channelR 1D · G 83 · B BF

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Every value on this page was computed from “1d83bf” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.