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Colour

#001C4E

  • #001C4E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#001C4E is a blue with RGB values 0, 28, 78 and HSL 218°, 100%, 15%. It is a dark colour, so white text on it reaches 16.5:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#001C4E#001C4E
HEX#001C4E
RGBrgb(0, 28, 78)
RGB (0–1)0, 0.1098, 0.3059
RGB percentages0%, 11%, 30.6%
HSLhsl(218.5, 100%, 15.3%)
HSV / HSBhsv(218.5, 100%, 30.6%)
CMYK100%, 64.1%, 0%, 69.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer7,246
CSS custom property--colour: #001C4E;

Brightness & contrast

Relative luminance0.01381WCAG 2.x, 0 is black and 1 is white
Perceived brightness34 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.46:1
Contrast with white16.46:1WCAG normal text: AAA
Contrast with black1.28:1WCAG normal text: Fail
Greyscale equivalent#1A1A1A
Inverted#FFE3B1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002350no red cones; affects about 1% of men; ΔE 5.8 from the original
Deuteranopia#001C4Dno green cones; the most common form, about 1% of men; ΔE 0.7 from the original
Tritanopia#002931no blue cones; rare, and affects men and women equally; ΔE 33.9 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.46:1WCAG large text: AAA
Contrast with black, large text1.28:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 24.5Midnight blue · ΔE 24.9Black · ΔE 37.9Rebecca purple · ΔE 38.9Dark slate grey · ΔE 43.4Steel blue · ΔE 44.1
Nearest named CSS colourDark slateblue (#483D8B)ΔE 24.53, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4E3200
Analogous#00434E, #0B004E
Triadic#4E001C, #1C4E00
Split complementary#4E0B00, #434E00
Tetradic#4E0043, #4E3200, #004E0B

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1B6DFF
Lighter +30%#0053E7
Lighter +20%#0041B4
Lighter +10%#002E81
Darker −10%#000A1B
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001C4E
Less saturated −25%#0A1F44

Channel breakdown

R0
G28
B78
Red0 (0%)
Green28 (11%)
Blue78 (30.6%)
Hue218.46°
Saturation (HSL)100%
Lightness15.29%
Dominant channelBlue
Hex per channelR 00 · G 1C · B 4E

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Every value on this page was computed from “001c4e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.