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Colour

#00427F

  • #00427F
  • Blue
  • Dark
  • Nearest: Dark slateblue

#00427F is a blue with RGB values 0, 66, 127 and HSL 209°, 100%, 25%. It is a dark colour, so white text on it reaches 10.1:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#00427F#00427F
HEX#00427F
RGBrgb(0, 66, 127)
RGB (0–1)0, 0.2588, 0.498
RGB percentages0%, 25.9%, 49.8%
HSLhsl(208.8, 100%, 24.9%)
HSV / HSBhsv(208.8, 100%, 49.8%)
CMYK100%, 48%, 0%, 50.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer17,023
CSS custom property--colour: #00427F;

Brightness & contrast

Relative luminance0.05429WCAG 2.x, 0 is black and 1 is white
Perceived brightness66.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.07:1
Contrast with white10.07:1WCAG normal text: AAA
Contrast with black2.09:1WCAG normal text: Fail
Greyscale equivalent#383838
Inverted#FFBD80

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1F4781no red cones; affects about 1% of men; ΔE 3.6 from the original
Deuteranopia#003D7Eno green cones; the most common form, about 1% of men; ΔE 4 from the original
Tritanopia#00515Ano blue cones; rare, and affects men and women equally; ΔE 37.7 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.07:1WCAG large text: AAA
Contrast with black, large text2.09:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 19.2Steel blue · ΔE 28Midnight blue · ΔE 29.1Cornflower blue · ΔE 35.5Rebecca purple · ΔE 36.8Royal blue · ΔE 37.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 19.17, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#7F3D00
Analogous#007F7D, #00027F
Triadic#7F0042, #427F00
Split complementary#7F0002, #7F7D00
Tetradic#7D007F, #7F3D00, #027F00

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#4CA9FF
Lighter +30%#1991FF
Lighter +20%#0077E5
Lighter +10%#005DB2
Darker −10%#00274C
Darker −20%#000D19
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00427F
Less saturated −25%#10416F

Channel breakdown

R0
G66
B127
Red0 (0%)
Green66 (25.9%)
Blue127 (49.8%)
Hue208.82°
Saturation (HSL)100%
Lightness24.9%
Dominant channelBlue
Hex per channelR 00 · G 42 · B 7F

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Every value on this page was computed from “00427f” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.