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Colour

#001C45

  • #001C45
  • Blue
  • Dark
  • Nearest: Dark slateblue

#001C45 is a blue with RGB values 0, 28, 69 and HSL 216°, 100%, 14%. It is a dark colour, so white text on it reaches 16.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#001C45#001C45
HEX#001C45
RGBrgb(0, 28, 69)
RGB (0–1)0, 0.1098, 0.2706
RGB percentages0%, 11%, 27.1%
HSLhsl(215.7, 100%, 13.5%)
HSV / HSBhsv(215.7, 100%, 27.1%)
CMYK100%, 59.4%, 0%, 72.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer7,237
CSS custom property--colour: #001C45;

Brightness & contrast

Relative luminance0.0126WCAG 2.x, 0 is black and 1 is white
Perceived brightness31.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.77:1
Contrast with white16.77:1WCAG normal text: AAA
Contrast with black1.25:1WCAG normal text: Fail
Greyscale equivalent#191919
Inverted#FFE3BA

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#002146no red cones; affects about 1% of men; ΔE 4.5 from the original
Deuteranopia#001A44no green cones; the most common form, about 1% of men; ΔE 1.5 from the original
Tritanopia#00262Dno blue cones; rare, and affects men and women equally; ΔE 27.7 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text16.77:1WCAG large text: AAA
Contrast with black, large text1.25:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 29.5Midnight blue · ΔE 31.4Black · ΔE 31.9Dark slate grey · ΔE 38.1Steel blue · ΔE 43.6Rebecca purple · ΔE 44.6
Nearest named CSS colourDark slateblue (#483D8B)ΔE 29.53, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#452900
Analogous#003E45, #070045
Triadic#45001C, #1C4500
Split complementary#450700, #3E4500
Tetradic#45003E, #452900, #004507

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1272FF
Lighter +30%#005ADE
Lighter +20%#0045AB
Lighter +10%#003178
Darker −10%#000712
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#001C45
Less saturated −25%#091E3C

Channel breakdown

R0
G28
B69
Red0 (0%)
Green28 (11%)
Blue69 (27.1%)
Hue215.65°
Saturation (HSL)100%
Lightness13.53%
Dominant channelBlue
Hex per channelR 00 · G 1C · B 45

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Every value on this page was computed from “001c45” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.