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Recognised as Colour

#1B65EF

  • #1B65EF
  • Blue
  • Dark
  • Nearest: Royal blue

#1B65EF is a blue with RGB values 27, 101, 239 and HSL 219°, 87%, 52%. It is a dark colour, so white text on it reaches 5.1:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#1B65EF#1B65EF
HEX#1B65EF
RGBrgb(27, 101, 239)
RGB (0–1)0.1059, 0.3961, 0.9373
RGB percentages10.6%, 39.6%, 93.7%
HSLhsl(219.1, 86.9%, 52.2%)
HSV / HSBhsv(219.1, 88.7%, 93.7%)
CMYK88.7%, 57.7%, 0%, 6.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,795,567
CSS custom property--colour: #1B65EF;

Brightness & contrast

Relative luminance0.15772WCAG 2.x, 0 is black and 1 is white
Perceived brightness112.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.05:1
Contrast with white5.05:1WCAG normal text: AA
Contrast with black4.15:1WCAG normal text: Fail
Greyscale equivalent#5F5F5F
Inverted#E49A10

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#0078F4no red cones; affects about 1% of men; ΔE 13.4 from the original
Deuteranopia#0066ECno green cones; the most common form, about 1% of men; ΔE 2.9 from the original
Tritanopia#0088A0no blue cones; rare, and affects men and women equally; ΔE 75.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.05:1WCAG large text: AAA
Contrast with black, large text4.15:1WCAG large text: AA

Named colours

Royal blue · ΔE 10.8Medium slateblue · ΔE 15.3Slate blue · ΔE 18.2Dodgerblue · ΔE 26.9Medium purple · ΔE 27.1Rebecca purple · ΔE 33.5
Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.8, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#EFA51B
Analogous#1BCFEF, #3B1BEF
Triadic#EF1B65, #65EF1B
Split complementary#EF3B1B, #CFEF1B
Tetradic#EF1BCF, #EFA51B, #1BEF3B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DAE6FC
Lighter +30%#AAC6F9
Lighter +20%#7AA5F6
Lighter +10%#4B85F2
Darker −10%#0E4FC9
Darker −20%#0B3C99
Darker −30%#072A6A
Darker −40%#04173A
More saturated +25%#0B60FF
Less saturated −25%#3A6ED1

Channel breakdown

R27
G101
B239
Red27 (10.6%)
Green101 (39.6%)
Blue239 (93.7%)
Hue219.06°
Saturation (HSL)86.89%
Lightness52.16%
Dominant channelBlue
Hex per channelR 1B · G 65 · B EF

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Every value on this page was computed from “1b65ef” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.