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Recognised as Colour

#1541A0

  • #1541A0
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1541A0 is a blue with RGB values 21, 65, 160 and HSL 221°, 77%, 35%. It is a dark colour, so white text on it reaches 9.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1541A0#1541A0
HEX#1541A0
RGBrgb(21, 65, 160)
RGB (0–1)0.0824, 0.2549, 0.6275
RGB percentages8.2%, 25.5%, 62.7%
HSLhsl(221, 76.8%, 35.5%)
HSV / HSBhsv(221, 86.9%, 62.7%)
CMYK86.9%, 59.4%, 0%, 37.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,393,056
CSS custom property--colour: #1541A0;

Brightness & contrast

Relative luminance0.06478WCAG 2.x, 0 is black and 1 is white
Perceived brightness74.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.15:1
Contrast with white9.15:1WCAG normal text: AAA
Contrast with black2.3:1WCAG normal text: Fail
Greyscale equivalent#3F3F3F
Inverted#EABE5F

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004FA3no red cones; affects about 1% of men; ΔE 11.2 from the original
Deuteranopia#00429Eno green cones; the most common form, about 1% of men; ΔE 2.7 from the original
Tritanopia#00596Ano blue cones; rare, and affects men and women equally; ΔE 55.6 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.15:1WCAG large text: AAA
Contrast with black, large text2.3:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 13.7Midnight blue · ΔE 18Slate blue · ΔE 19.7Royal blue · ΔE 20.1Rebecca purple · ΔE 21.5Medium purple · ΔE 28.4
Nearest named CSS colourDark slateblue (#483D8B)ΔE 13.66, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#A07415
Analogous#1587A0, #2F15A0
Triadic#A01541, #41A015
Split complementary#A02E15, #87A015
Tetradic#A01586, #A07415, #15A02E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#91AFF0
Lighter +30%#638EEB
Lighter +20%#366EE5
Lighter +10%#1B53CD
Darker −10%#0F2F73
Darker −20%#091C46
Darker −30%#030A19
Darker −40%#000000
More saturated +25%#0039B5
Less saturated −25%#2C4989

Channel breakdown

R21
G65
B160
Red21 (8.2%)
Green65 (25.5%)
Blue160 (62.7%)
Hue221.01°
Saturation (HSL)76.8%
Lightness35.49%
Dominant channelBlue
Hex per channelR 15 · G 41 · B A0

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Every value on this page was computed from “1541a0” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.