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Colour

#001C48

  • #001C48
  • Blue
  • Dark
  • Nearest: Dark slateblue

#001C48 is a blue with RGB values 0, 28, 72 and HSL 217°, 100%, 14%. It is a dark colour, so white text on it reaches 16.7:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#001C48#001C48
HEX#001C48
RGBrgb(0, 28, 72)
RGB (0–1)0, 0.1098, 0.2824
RGB percentages0%, 11%, 28.2%
HSLhsl(216.7, 100%, 14.1%)
HSV / HSBhsv(216.7, 100%, 28.2%)
CMYK100%, 61.1%, 0%, 71.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer7,240
CSS custom property--colour: #001C48;

Brightness & contrast

Relative luminance0.01298WCAG 2.x, 0 is black and 1 is white
Perceived brightness32.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.67:1
Contrast with white16.67:1WCAG normal text: AAA
Contrast with black1.26:1WCAG normal text: Fail
Greyscale equivalent#191919
Inverted#FFE3B7

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#00214Ano red cones; affects about 1% of men; ΔE 3.9 from the original
Deuteranopia#001B47no green cones; the most common form, about 1% of men; ΔE 0.5 from the original
Tritanopia#00272Eno blue cones; rare, and affects men and women equally; ΔE 30.1 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.67:1WCAG large text: AAA
Contrast with black, large text1.26:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 27.8Midnight blue · ΔE 29.2Black · ΔE 33.9Dark slate grey · ΔE 39.9Rebecca purple · ΔE 42.6Steel blue · ΔE 43.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 27.78, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#482C00
Analogous#004048, #080048
Triadic#48001C, #1C4800
Split complementary#480800, #404800
Tetradic#480040, #482C00, #004808

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1570FF
Lighter +30%#0058E1
Lighter +20%#0044AE
Lighter +10%#00307B
Darker −10%#000815
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001C48
Less saturated −25%#091E3F

Channel breakdown

R0
G28
B72
Red0 (0%)
Green28 (11%)
Blue72 (28.2%)
Hue216.67°
Saturation (HSL)100%
Lightness14.12%
Dominant channelBlue
Hex per channelR 00 · G 1C · B 48

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Every value on this page was computed from “001c48” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.