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Colour

#1500DD

  • #1500DD
  • Blue
  • Dark
  • Nearest: Medium blue

#1500DD is a blue with RGB values 21, 0, 221 and HSL 246°, 100%, 43%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#1500DD#1500DD
HEX#1500DD
RGBrgb(21, 0, 221)
RGB (0–1)0.0824, 0, 0.8667
RGB percentages8.2%, 0%, 86.7%
HSLhsl(245.7, 100%, 43.3%)
HSV / HSBhsv(245.7, 100%, 86.7%)
CMYK90.5%, 100%, 0%, 13.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,376,477
CSS custom property--colour: #1500DD;

Brightness & contrast

Relative luminance0.0538WCAG 2.x, 0 is black and 1 is white
Perceived brightness75.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.12:1
Contrast with white10.12:1WCAG normal text: AAA
Contrast with black2.08:1WCAG normal text: Fail
Greyscale equivalent#141414
Inverted#EAFF22

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#004CE2no red cones; affects about 1% of men; ΔE 36.1 from the original
Deuteranopia#0036DAno green cones; the most common form, about 1% of men; ΔE 23.5 from the original
Tritanopia#005C81no blue cones; rare, and affects men and women equally; ΔE 106 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.12:1WCAG large text: AAA
Contrast with black, large text2.08:1WCAG large text: Fail

Named colours

Medium blue · ΔE 6.7Blue · ΔE 14.9Blue violet · ΔE 25.8Dark violet · ΔE 28.7Dark blue · ΔE 36.8Dark orchid · ΔE 39.7
Nearest named CSS colourMedium blue (#0000CD)ΔE 6.71, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#C8DD00
Analogous#005ADD, #8300DD
Triadic#DD1500, #00DD15
Split complementary#DD8300, #5ADD00
Tetradic#DD005A, #C8DD00, #00DD83

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#B2AAFF
Lighter +30%#8477FF
Lighter +20%#5644FF
Lighter +10%#2811FF
Darker −10%#1000AA
Darker −20%#0B0077
Darker −30%#060044
Darker −40%#020011
More saturated +25%#1500DD
Less saturated −25%#2B1CC1

Channel breakdown

R21
G0
B221
Red21 (8.2%)
Green0 (0%)
Blue221 (86.7%)
Hue245.7°
Saturation (HSL)100%
Lightness43.33%
Dominant channelBlue
Hex per channelR 15 · G 00 · B DD

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Every value on this page was computed from “1500dd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.