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Colour

#1500B4

  • #1500B4
  • Blue
  • Dark
  • Nearest: Medium blue

#1500B4 is a blue with RGB values 21, 0, 180 and HSL 247°, 100%, 35%. It is a dark colour, so white text on it reaches 12.4:1 contrast (AAA for normal text). The nearest named colour is Medium blue.

Colour values

#1500B4#1500B4
HEX#1500B4
RGBrgb(21, 0, 180)
RGB (0–1)0.0824, 0, 0.7059
RGB percentages8.2%, 0%, 70.6%
HSLhsl(247, 100%, 35.3%)
HSV / HSBhsv(247, 100%, 70.6%)
CMYK88.3%, 100%, 0%, 29.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,376,436
CSS custom property--colour: #1500B4;

Brightness & contrast

Relative luminance0.03455WCAG 2.x, 0 is black and 1 is white
Perceived brightness61.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 12.42:1
Contrast with white12.42:1WCAG normal text: AAA
Contrast with black1.69:1WCAG normal text: Fail
Greyscale equivalent#111111
Inverted#EAFF4B

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003DB8no red cones; affects about 1% of men; ΔE 31.4 from the original
Deuteranopia#002BB1no green cones; the most common form, about 1% of men; ΔE 20.9 from the original
Tritanopia#004968no blue cones; rare, and affects men and women equally; ΔE 90.3 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text12.42:1WCAG large text: AAA
Contrast with black, large text1.69:1WCAG large text: Fail

Named colours

Medium blue · ΔE 11.7Dark blue · ΔE 18.5Blue violet · ΔE 23.3Navy · ΔE 23.8Dark violet · ΔE 26.1Indigo · ΔE 30.3
Nearest named CSS colourMedium blue (#0000CD)ΔE 11.66, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#9FB400
Analogous#0045B4, #6F00B4
Triadic#B41500, #00B415
Split complementary#B46F00, #45B400
Tetradic#B40045, #9FB400, #00B46F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#9081FF
Lighter +30%#634EFF
Lighter +20%#361BFF
Lighter +10%#1B00E7
Darker −10%#0F0081
Darker −20%#09004E
Darker −30%#03001B
Darker −40%#000000
More saturated +25%#1500B4
Less saturated −25%#26179E

Channel breakdown

R21
G0
B180
Red21 (8.2%)
Green0 (0%)
Blue180 (70.6%)
Hue247°
Saturation (HSL)100%
Lightness35.29%
Dominant channelBlue
Hex per channelR 15 · G 00 · B B4

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Every value on this page was computed from “1500b4” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.