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Recognised as Colour

#01284E

  • #01284E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#01284E is a blue with RGB values 1, 40, 78 and HSL 210°, 97%, 15%. It is a dark colour, so white text on it reaches 14.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#01284E#01284E
HEX#01284E
RGBrgb(1, 40, 78)
RGB (0–1)0.0039, 0.1569, 0.3059
RGB percentages0.4%, 15.7%, 30.6%
HSLhsl(209.6, 97.5%, 15.5%)
HSV / HSBhsv(209.6, 98.7%, 30.6%)
CMYK98.7%, 48.7%, 0%, 69.4%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer75,854
CSS custom property--colour: #01284E;

Brightness & contrast

Relative luminance0.02074WCAG 2.x, 0 is black and 1 is white
Perceived brightness40.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.84:1
Contrast with white14.84:1WCAG normal text: AAA
Contrast with black1.41:1WCAG normal text: Fail
Greyscale equivalent#222222
Inverted#FED7B1

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#142B4Fno red cones; affects about 1% of men; ΔE 3 from the original
Deuteranopia#03244Dno green cones; the most common form, about 1% of men; ΔE 3.5 from the original
Tritanopia#003137no blue cones; rare, and affects men and women equally; ΔE 25.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.84:1WCAG large text: AAA
Contrast with black, large text1.41:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 30.7Black · ΔE 31.6Dark slate grey · ΔE 32Midnight blue · ΔE 35.8Steel blue · ΔE 37.8Dim grey · ΔE 39.5
Nearest named CSS colourDark slateblue (#483D8B)ΔE 30.65, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#4E2701
Analogous#014E4D, #01024E
Triadic#4E0128, #284E01
Split complementary#4E0102, #4E4D01
Tetradic#4D014E, #4E2701, #024E01

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#1F8FFC
Lighter +30%#0375E5
Lighter +20%#025CB3
Lighter +10%#024280
Darker −10%#000E1C
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#00284F
Less saturated −25%#0B2844

Channel breakdown

R1
G40
B78
Red1 (0.4%)
Green40 (15.7%)
Blue78 (30.6%)
Hue209.61°
Saturation (HSL)97.47%
Lightness15.49%
Dominant channelBlue
Hex per channelR 01 · G 28 · B 4E

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Every value on this page was computed from “01284e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.